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Phoenix Sky Harbor International Airport
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Phoenix Sky Harbor International Airport (IATA: PHX, ICAO: KPHX, FAA LID: PHX) is a civil-military public international airport 3 miles (2.6 nmi; 4.8 km) east of downtown Phoenix, in Maricopa County, Arizona, United States.[3] It is Arizona's largest and busiest airport; among the largest commercial airports in the United States, PHX was the 11th-busiest airport in the United States in terms of passenger boardings and 35th-busiest in the world in 2024.[5] The airport serves as a hub for American Airlines and a base for Frontier Airlines and Southwest Airlines.
Key Information
The airport is also home to the 161st Air Refueling Wing (161 ARW), an Air Mobility Command (AMC)–gained unit of the Arizona Air National Guard. The military enclave is known as Goldwater Air National Guard Base. One of two flying units in the Arizona ANG, the 161 ARW flies the KC-135R Stratotanker aircraft. In addition to its domestic role as a National Guard unit, answering to the Governor of Arizona, the 161 ARW also performs both a stateside and overseas role as a USAF organization, supporting air refueling and air mobility missions worldwide.[6]
History
[edit]Early history
[edit]

Sky Harbor Airport's evocative name was conceived by J. Parker Van Zandt, the owner of Scenic Airways, who purchased 278 acres of farmland for Scenic's winter operations in November 1928. Sky Harbor was not only named but founded and built by Van Zandt in late 1928. He immediately commenced building a 100 x 120 foot airplane hangar and through early 1929 built one runway. This was the fourth airport built in Phoenix.[7] Scenic Airways, lacking funds after the infamous Stock Market Crash of 1929,[8][7] sold the airport to Acme Investment Company, which owned the airport until 1935, when the city of Phoenix purchased Sky Harbor airport from Acme for $100,000.[9]
Historical airline service
[edit]On February 23, 1929, Maddux Air Lines began the airport's first scheduled passenger service with a route between San Francisco and El Paso stopping in Phoenix, Los Angeles, and several other cities; however the service was short-lived, ending by autumn 1929. Standard Air Lines had been serving Phoenix since late 1927 at a different airport and began landing at Sky Harbor on August 5, 1929. Standard operated a route between Los Angeles and El Paso stopping at Phoenix, Tucson, and Douglas, Arizona. Standard was acquired by American Airways in 1930 which later became American Airlines. American extended the route eastward to New York by way of Dallas, Nashville, and many other cities making for a southern transcontinental route across the United States.[10]
TWA began service to San Francisco in 1938 and added Phoenix onto its transcontinental network by 1944 with flights to Los Angeles and eastward to New York stopping at Albuquerque, Kansas City, and many more cities. Arizona Airways began intrastate service within Arizona in 1946 and merged into Frontier Airlines in 1950 which added new routes to Denver, Albuquerque, and El Paso. Bonanza Airlines began service by 1951 with a route to Las Vegas and Reno making several stops at smaller communities. New routes to Salt Lake City and Southern California were added in the 1960s along with nonstop flights to Las Vegas and Reno aboard Douglas DC-9 jets by 1965. Bonanza merged with two other carriers to become Air West in 1968 and was changed to Hughes Airwest in 1970 adding several new routes, including service to Mexico, creating a hub at Phoenix. Hughes Airwest was then merged into Republic Airlines in 1980 which continued the Phoenix hub operation until the mid-1980s. Western Airlines came to Sky Harbor in 1957 with flights to Denver, Los Angeles and San Diego, Continental Airlines came in 1961 to El Paso, Los Angeles, and Tucson, and Delta Air Lines began flights to Dallas by 1969.[9]
Bonanza Air Lines moved its headquarters from Las Vegas to Phoenix in 1966. Bonanza merged with two other airlines to form Air West, which became Hughes Airwest after Howard Hughes bought it in 1970.[11]
After the Airline Deregulation Act was signed in 1978, many new airlines began service to Sky Harbor. In 1978, former Hughes Airwest executive Ed Beauvais formed a plan for a new airline based in Phoenix. He founded America West Airlines in 1981, which began service from Phoenix in 1983 and doubled in size during its first year.[11] Allegheny Airlines and Eastern Airlines soon began service in 1979 followed by United Airlines in 1980. Allegheny changed its name to USAir shortly after beginning service in 1979. Southwest Airlines arrived at Phoenix in January 1982 with 13 daily flights to 12 cities; by 1986 it had 64 daily flights from Phoenix and had a crew base there. Southwest opened a maintenance facility at PHX in 1992, which was its largest.[12]
America West filed for Chapter 11 bankruptcy protection in 1991 and sold its larger aircraft and Japanese route authority, but continued growing its domestic operations from Terminal 4 in cooperation with Continental Airlines. Although AWA enjoyed further growth at Phoenix during the 1990s the aftermath of the September 11 attacks strained its financial position. AWA ended its relationship with Continental and merged with US Airways in 2005. US Airways moved its headquarters to the AWA campus in Tempe and retained many AWA managers to run the merged company. US Airways was then merged into American Airlines in 2015 which continues to build upon the largest hub operation at Phoenix Sky Harbor.[11]
Sky Harbor landed its first transatlantic flights in 1996 when British Airways inaugurated nonstop service to London. The flight was first operated with a Douglas DC-10 aircraft but soon upgraded to a Boeing 747-400.[13]
In May 2025, Starlux Airlines announced they would launch service in 2026 to Taipei, Taiwan, on an Airbus A350 aircraft, marking the first time an airline announced non stop service to Asia from the airport.[14] On 25 July 2025 China Airlines announced that it will start nonstop flights to Taipei, starting on December of that year.[15][16]
Facilities expansions and growth
[edit]After World War II, the airport began work on a new passenger terminal, as well as a new parallel runway and a diagonal runway.[17] On the February 1953 C&GS diagram runways 8L and 8R are each 6,000 feet (1,800 m) long and runway 3 is 5,500 feet (1,700 m). The $835,000 Terminal 1 (originally called the West Wing), which also had the first control tower, opened in October 1952.[17]
The airport's master plan was redesigned in 1959 to eliminate the cross runway to make room for new terminals.[17] American and TWA began jet service to Phoenix in 1960 and 1961 respectively, and Terminal 2 (originally called the East Wing) opened in 1962.[18] Terminal 2 was designed by the Phoenix architectural firms of Weaver & Drover and Lescher & Mahoney and opened in 1962.[19] Terminal 2 also featured a 16-foot (4.9 m) high and 75-foot (23 m) wide mural composed of 52 different materials, including mosaic glass, gemstones, shells, and vintage toys.
The Phoenix, designed by the late French-American artist and full-time resident of Phoenix Paul Coze, was commissioned in 1960 as Phoenix's first work of public art and was installed in 1962 in the main lobby area of the terminal. The Phoenix was relocated to the Rental Car Center in 2021 following the decommissioning and demolition of Terminal 2.[20] In November 2006, a Military and Veterans Hospitality Room, sponsored by the Phoenix Military and Veterans Commission, was opened in Terminal 2. It has since relocated to Terminal 4 as the new USO club. This terminal underwent two renovation projects. The first was completed in 1988.[21] The second project, which cost $24 million and was designed by DWL Architects + Planners, Inc., was completed in 2007.[19]
Construction on Terminal 3 began in January 1977. Designed by DWL Architects + Planners, Inc., Terminal 3 opened in October 1979, and the "East" and "West" names were dropped since there were no longer only two terminals.[17]

In October 1989, ground was broken for Terminal 4, the largest terminal.[22] It opened on November 2, 1990,[23] with four concourses: N2 and N3 on the north side and S3 and S4 on the south side. In 1994 the N4 International Concourse was opened, adding 10 gates and a sterile walkway to the S4 concourse. In 1997 construction began on the 14-gate N1 concourse for America West Airlines. It was completed in June 1998 at a cost of $50 million,[24] completing the expansion of the north side of the terminal. On the south side of the terminal, construction began in 2002 on the eight-gate S2 concourse for Southwest Airlines. This project was completed in 2004 and has a different architectural design from the other six concourses. The eighth and final concourse for Terminal 4, S1 (South 1), with gates D11–D18, began construction in May 2019. Terminal 4 is named after former Arizona Senator and 1964 Presidential candidate Barry M. Goldwater. After Goldwater's death in 1998, the then-mayor of Phoenix, Skip Rimsza, proposed renaming the airport in Goldwater's memory but was deluged with public support for the familiar "Sky Harbor" name.[25] Terminal 4, designed by DWL Architects + Planners, Inc., is the largest and busiest of the two terminals with 86 (now 92) gates, divided into eight satellite concourses connected behind security.[19]
In 2007, the Transportation Security Administration introduced the first of its backscatter X-ray machines at PHX.[26]
Recent developments
[edit]In February 2020, Terminal 2 accepted its final flight and was then decommissioned. Demolition occurred in early 2021 with the terminal being replaced by concrete stands for aircraft, accessible by bus from other terminals.[27] Airlines previously using Terminal 2 were relocated to Terminal 3, which had completed renovations in January 2020.[28]
In January 2021, Terminal 3 was renamed in honor of Senator John McCain by the Phoenix City Council.[29]
In February 2024, the airport announced plans for infrastructure upgrades at its central utility plant in Terminal 4, which will improve air conditioning at the airport. The $36 million project was funded by a FAA Airport Terminal Program grant included in the federal Infrastructure Investment and Jobs Act that was signed into law by President Joe Biden.[30]
On April 29, 2024, Phoenix Mayor Kate Gallego announced that a new terminal would be constructed on the west end of the property near the former location of Terminal 2. She said that in 2023 the airport welcomed more than 48 million passengers and with continued growth expected the new terminal was needed to accommodate growing demand and handle the increased number of travelers. The terminal would feature a new customs facility and would be designed to have net-zero greenhouse gas emissions, making it an environmentally friendly structure.[31]
In 2024, the airport surpassed 50 million passengers in a single calendar year, an all-time record for the facility.[32]
Christmas Day shooting and stabbing
[edit]On December 25, 2024, an apparent family dispute among a group of five at a restaurant in Terminal 4 escalated into a shooting and stabbing, leaving three with gunshot wounds and another with a stab wound. A man and a juvenile female were detained as a result of the incident. After the domestic incident, a man allegedly responding to false reports of an active shooter at the airport arrived at the airport shirtless and armed. The man had an altercation with police before he was also arrested.[33][34]
Facilities
[edit]Terminals
[edit]
The airport has 119 active aircraft gates in two Terminals (3 and 4).[35] The airport administration states that the designations Terminal 1 and Terminal 2 have been "retired" and that it did not wish to renumber the other terminals since passengers were already familiar with the numbers in place.[36] Terminals 3 and 4 continued to retain their numbers after the closing of Terminal 2.[37] Bus gates are planned to be operated on the Terminal 2 site.[38][36][39][40] Terminal 3 is used by most domestic or precleared arrivals including Frontier Airlines.[41] Alaska Airlines also uses Terminal 3 for both its arrivals and departures.[6] International carriers, American and Southwest operate in Terminal 4.[42]
Runways
[edit]PHX covers 3,400 acres (14 km2) at an elevation of 1,135 ft (346 m). The airport has three parallel concrete/grooved runways:[3][43]
- Runway 8/26 measuring 11,489 ft × 150 ft (3,502 m × 46 m)
- Runway 7L/25R measuring 10,300 ft × 150 ft (3,139 m × 46 m)
- Runway 7R/25L measuring 7,800 ft × 150 ft (2,377 m × 46 m)
All three runways can accommodate aircraft with a maximum takeoff weight of 900,000 lb (410,000 kg) or greater.[3]
Sky Harbor's private airplane area is also one of eight service centers for the Medevac airline Air Evac.[44]
ATC tower
[edit]The airport's 326-foot-tall (99 m) air traffic control tower began operations on January 14, 2007. It stands just east of the Terminal 3 parking garage and also houses the Phoenix TRACON. This is Sky Harbor's third control tower and is among the tallest control towers in North America.[45][46]
Museum
[edit]The Phoenix Airport Museum is a museum displaying artwork and local aviation memorabilia located inside the terminal.[47]
Airlines and destinations
[edit]Passenger
[edit]The following airlines operate regularly scheduled passenger flights at Sky Harbor Airport:[48]
Cargo
[edit]Statistics
[edit]Top destinations
[edit]| Rank | City | Passengers | Carriers |
|---|---|---|---|
| 1 | 1,207,000 | American, Frontier, Southwest, United | |
| 2 | 931,000 | Alaska, American, Delta, Frontier, Southwest | |
| 3 | 828,000 | American, Frontier, Southwest, Spirit, United | |
| 4 | 821,000 | American, Delta, Frontier, Southwest, United | |
| 4 | 821,000 | American, Spirit, Frontier | |
| 6 | 805,000 | American, Frontier, JSX, Southwest, Spirit | |
| 7 | 662,000 | American, Delta, Frontier, Southwest | |
| 8 | 648,000 | American, Delta, Frontier, Southwest, Spirit, Sun Country | |
| 8 | 648,000 | American, Frontier, JSX, Southwest | |
| 10 | 630,000 | Alaska, American, Frontier, Southwest, United |
| Rank | City | Passengers | Carriers |
|---|---|---|---|
| 1 | 457,831 | American, Frontier, Southwest | |
| 2 | 334,863 | American, British Airways | |
| 3 | 312,085 | Flair, Lynx Air, WestJet | |
| 4 | 310,506 | American, Southwest | |
| 5 | 219,996 | American, Southwest | |
| 6 | 208,766 | Air Canada, Flair, WestJet | |
| 7 | 206,849 | Air Canada, Lynx Air, Porter | |
| 8 | 197,067 | American, Volaris | |
| 9 | 112,200 | American | |
| 10 | 104,586 | Flair, WestJet |
Annual traffic
[edit]| Year | Passengers | Year | Passengers | Year | Passengers | Year | Passengers |
|---|---|---|---|---|---|---|---|
| 1951 | 240,786 | 1971 | 3,000,707 | 1991 | 22,140,437 | 2011 | 40,592,295 |
| 1952 | 296,066 | 1972 | 3,365,122 | 1992 | 22,118,399 | 2012 | 40,448,932 |
| 1953 | 325,311 | 1973 | 3,776,725 | 1993 | 23,621,781 | 2013 | 40,341,614 |
| 1954 | 365,545 | 1974 | 3,962,988 | 1994 | 25,626,132 | 2014 | 42,134,662 |
| 1955 | 442,587 | 1975 | 3,964,942 | 1995 | 27,856,195 | 2015 | 44,003,840 |
| 1956 | 495,268 | 1976 | 4,414,625 | 1996 | 30,411,852 | 2016 | 43,411,591 |
| 1957 | 581,087 | 1977 | 4,984,653 | 1997 | 30,667,210 | 2017 | 43,921,670 |
| 1958 | 658,889 | 1978 | 5,931,860 | 1998 | 31,769,113 | 2018 | 44,943,686 |
| 1959 | 783,115 | 1979 | 7,021,985 | 1999 | 33,472,916 | 2019 | 46,288,337 |
| 1960 | 857,318 | 1980 | 6,585,854 | 2000 | 36,044,281 | 2020 | 21,928,708 |
| 1961 | 920,096 | 1981 | 6,641,750 | 2001 | 35,437,051 | 2021 | 38,846,713 |
| 1962 | 1,090,953 | 1982 | 7,491,516 | 2002 | 35,547,432 | 2022 | 44,397,854 |
| 1963 | 1,247,684 | 1983 | 8,605,408 | 2003 | 37,423,596 | 2023 | 48,654,432 |
| 1964 | 1,411,912 | 1984 | 10,801,658 | 2004 | 39,504,323 | 2024 | 52,325,266 |
| 1965 | 1,594,895 | 1985 | 13,422,764 | 2005 | 41,215,342 | 2025 | |
| 1966 | 1,943,336 | 1986 | 15,556,994 | 2006 | 41,436,498 | 2026 | |
| 1967 | 2,236,637 | 1987 | 17,723,046 | 2007 | 42,184,515 | 2027 | |
| 1968 | 2,515,326 | 1988 | 19,178,100 | 2008 | 39,891,193 | 2028 | |
| 1969 | 2,795,212 | 1989 | 20,714,059 | 2009 | 37,824,982 | 2029 | |
| 1970 | 2,871,958 | 1990 | 21,718,068 | 2010 | 38,554,530 | 2030 |
- From 1951 through the end of 2024, 1,477,534,183 passengers (domestic and international, enplaned and deplaned) have transited through PHX, an annual average of 19,966,678 passengers per year. In the same time frame there were 30,033,280 million aircraft movements (commercial, military, general aviation) at PHX, an annual average of 405,855 movements per year.[129] PHX has grown over the years into a major US hub, and in 2024 was ranked the 35th-busiest airport in the world and 11th-busiest airport in the United States in passenger boardings.
Airline market share
[edit]| Rank | Airline | Passengers | Percent of market share |
|---|---|---|---|
| 1 | Southwest Airlines | 16,301,000 | 34.15% |
| 2 | American Airlines | 15,382,000 | 32.23% |
| 3 | Delta Air Lines | 3,312,000 | 6.94% |
| 4 | Skywest Airlines | 3,116,000 | 6.53% |
| 5 | United Airlines | 2,911,000 | 6.10% |
| 6 | Other Airlines | 6,708,000 | 14.05% |
Ground transportation
[edit]
Travelers can access both terminals from the East Economy Parking by using the PHX Sky Train.[130] There is also terminal parking adjacent to each terminal.[131] The PHX Sky Train project is complete, connecting terminals to the Rental Car Center.
Valley Metro bus route 13 has a stop at the 24th St. Sky Train station[132] Travelers connecting to or from the Greyhound station can walk from the 24th St. Sky Train Station. The Valley Metro Rail has a stop at the nearby 44th St/Washington light rail station. A moving sidewalk bridge over Washington Street allows light rail passengers to arrive at the nearby PHX Sky Train station and then onward to stations at the East Economy Parking Lot and Terminals 3 and 4. Valley Metro bus routes 44 serve the PHX Sky Train station at 44th Street and Washington.[133]
A number of taxi, limousine, ride share and shuttle companies provide service between each airport terminal, the Phoenix metropolitan area, and other communities throughout the state.[134]
By road, the airport terminals are served by East Sky Harbor Boulevard, which is fed by Interstate 10, Arizona State Routes 143 and 202.
PHX Sky Train
[edit]The PHX Sky Train is an automated people-mover, much like those found at other airports, that transports Sky Harbor passengers from the 44th Street and Washington Light Rail station to Sky Harbor's East Economy Parking lot, through both terminals. Phase 1 opened on April 8, 2013, and runs from the 44th Street and Washington Light Rail station, to East Economy Parking and on to Terminal 4.[135] Phase 1A shuttles passengers to Terminal 3. Phase 1A opened on December 8, 2014.[136] Phase 2 transports passengers to the Rental Car Center. Phase 2 opened on December 20, 2022.[137]
Reception
[edit]In its 2019 airport rankings, The Wall Street Journal ranked Sky Harbor as the best airport overall among the 20 largest airports in the U.S.[138] "Phoenix excelled in several of the 15 categories, with short screening waits, fast Wi-Fi, good Yelp scores for restaurant reviews, short taxi-to-takeoff times for planes and cheap average Uber cost to get downtown."[139] Sky Harbor won the honor again in 2023, ahead of Minneapolis–Saint Paul International Airport and Los Angeles International Airport.[140]
Accidents and incidents
[edit]| Date | Flight number | Information |
|---|---|---|
| June 27, 1969 | N/A | A Cessna 182 Skylane, flying from Hawthorne Airport in Hawthorne, California, to Sky Harbor, hit high-tension power lines east of the airport and crashed at 10:48 pm in the Salt River bed while attempting to land on Runway 26R, knocking out power to the airport and killing all three passengers on board.[141] |
| March 13, 1990 | N/A | An Alaska Airlines Boeing 727 taking off from PHX struck and killed a male who breached security and ran onto the runway. There were no injuries on the 727. Airport authorities determined he was a patient at a nearby mental hospital.[142] |
| August 28, 2002 | HP794 | An America West Airlines Airbus A320 arriving from Houston experienced a nosegear collapse while taxiing in after landing.[143][144] |
| July 11, 2009 | BA288 | A British Airways Boeing 747 due to depart to London, was evacuated on the tarmac due to fumes in the cabin.[145][146] |
| August 17, 2017 | QF7 | A Qantas Airbus A380 passenger experienced a medical emergency en route from Sydney to Dallas and the flight diverted to Phoenix. This is the first recorded arrival of the A380 superjumbo in Phoenix and the aircraft was required to taxi to a remote stand as the airport did not have a gate capable of handling the oversized Airbus.[147] |
| December 6, 2017 | BA288/BAW38P | A British Airways Boeing 747 experienced a #3 engine problem during climbout and needed to return to the airport after dumping fuel. The incident was recorded on camera.[148][149][150] |
The airport reported zero visibility in August 2025 during a haboob.[151]
See also
[edit]Notes
[edit]References
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External links
[edit]- Official website

- Phoenix Sky Harbor International Airport (PHX) at Arizona DOT airport directory
- Sky Harbor Airport Parking
- FAA Airport Diagram (PDF), effective October 30, 2025
- Terminal 4 Level 3 Map
- FAA Terminal Procedures for PHX, effective October 30, 2025
- Resources for this airport:
- AirNav airport information for KPHX
- ASN accident history for PHX
- FlightAware airport information and live flight tracker
- NOAA/NWS weather observations: current, past three days
- SkyVector aeronautical chart for KPHX
- FAA current PHX delay information
Phoenix Sky Harbor International Airport
View on GrokipediaHistory
Early Development and Establishment
Phoenix Sky Harbor Airport was founded as a private airfield in late 1928 by J. Parker Van Zandt, owner of Scenic Airways, who purchased 278 acres of cotton fields east of 24th Street and south of the Southern Pacific railroad tracks in Phoenix. Van Zandt named the site Sky Harbor, envisioning it as a hub for aerial operations, and oversaw the construction of a dirt landing strip, an office building, and a hangar, with initial operations commencing by early 1929. The facility supported early aviation activities, including the start of scheduled passenger service that year via Scenic Airways, reflecting the era's growing interest in air travel amid Phoenix's population expansion from tourism and agriculture.[5][6] The 1929 stock market crash strained private ownership, leading Van Zandt to sell Sky Harbor to Acme Investments Company in the early 1930s. American Airlines established service at the airport in 1930, utilizing it for regional routes. In 1934, Acme leased the facility to Maricopa County for management, but the county relinquished the lease the following year amid financial pressures and operational challenges, leaving the site's future uncertain.[6][7] To avert the discontinuation of American Airlines' operations—which had warned of withdrawal without stable municipal oversight—the City of Phoenix acquired Sky Harbor from Acme on July 16, 1935, for $100,000, encompassing approximately 285 acres then nicknamed "The Farm" for its isolated, rural character. The transaction involved $35,300 paid in cash and a $64,700 mortgage, marking the airport's transition to public ownership and its formal establishment as a city-managed asset. At this stage, infrastructure remained rudimentary, consisting primarily of the original runway and basic structures, with no dedicated passenger terminals until later decades; the purchase prioritized continuity of commercial air service over immediate expansion, aligning with Phoenix's economic reliance on connectivity to distant markets.[1][8][9]World War II Era and Initial Commercial Operations
During the World War II era, Phoenix Sky Harbor Airport played a key role in military aviation activities. In 1940, the United States Army established its regional headquarters at the facility, which was expanded to 320 acres and equipped with its first control tower to support operations, including aircraft refueling.[10] By April 1943, the airport hosted flying training programs for United States Army Air Forces personnel and aviation students from Allied nations, leveraging Arizona's favorable weather for pilot instruction.[11] That same year, the Navy Air Transport Service incorporated Sky Harbor as a scheduled stop on its transcontinental cargo and personnel routes, enhancing its logistical importance.[10] Commercial operations persisted alongside military use, with airlines such as American Airlines, Trans World Airlines, and Southwest Airways maintaining service using a total of 35 aircraft.[10] Infrastructure improvements included the paving of the first runway in 1945 and the addition of a second story to the control tower in 1944 for better oversight.[10] A 64-seat Sky Chefs restaurant opened in 1943 to accommodate travelers and service members, reflecting the dual civilian-military demands.[10] Following the war's end in 1945, Sky Harbor rapidly shifted toward expanded commercial aviation. By 1946, it was served by three major airlines and ranked as the busiest airport in the United States, with the site growing to 400 acres to handle surging demand.[10] Passenger traffic climbed to 240,786 in 1950 amid Phoenix's population growth to approximately 105,000, prompting further developments like the completion of Terminal 1 and a new control tower in 1952 at a cost of $835,000.[10] These enhancements solidified the airport's role as a burgeoning commercial hub, with traffic reaching 296,066 passengers by the end of 1952.[10] The Arizona Air National Guard also initiated operations there in 1949, marking a continued military presence amid civilian expansion.[10]Post-War Expansion and Airline Hub Growth
Following World War II, Phoenix Sky Harbor underwent significant infrastructure upgrades to accommodate surging civilian air traffic, including construction of a new passenger terminal and additional runways. Terminal 1 opened in September 1952 at a cost of $835,000, constructed by Mardian Construction Co., replacing outdated facilities and featuring a modern control tower.[12] [2] Concurrently, the airfield expanded with a new parallel runway (08/26) and a crosswind diagonal runway (03/21) to handle increased operations and mitigate congestion from military-era limitations.[13] Passenger volumes reflected this growth, rising from 240,786 in 1950 to 296,066 in 1952, driven by Phoenix's booming population and tourism appeal.[10] By 1962, Terminal 2 opened in April after a $2.7 million investment, encompassing 330,000 square feet, 19 gates, and a 1,000-car parking garage, coinciding with the airport surpassing one million annual passengers for the first time.[14] [2] These developments supported steady traffic increases through the 1960s and 1970s, with Terminal 3's opening in 1979 boosting capacity further as volumes reached 7 million passengers annually.[2] The airport's evolution into a major airline hub accelerated in the 1980s with the launch of America West Airlines, founded in 1981 and commencing operations on August 1, 1983, from Phoenix as its primary base.[15] [16] Headquartered in nearby Tempe, the carrier initially deployed three leased Boeing 737-200s for short-haul western U.S. routes, capitalizing on deregulation to offer low-fare service and rapidly expand connectivity from Sky Harbor.[15] This focus prompted dedicated infrastructure like the N-1 concourse in November 1986, adding 12 gates to accommodate America West's fleet growth and hub operations, which by the late 1980s handled a substantial share of the airport's traffic.[15] America West's strategy transformed Phoenix into a key southwest connecting point, fostering long-term hub dominance later inherited by successors US Airways and American Airlines.[15]Major Infrastructure Modernizations
In 1976, construction began on Terminal 3, which opened in 1979 after costing $35 million for the terminal structure and an additional $13 million for its accompanying parking garage; the facility spanned 880,000 square feet with 23 gates.[2] A new Federal Aviation Administration control tower, standing 185 feet tall, opened in 1977 to handle increasing air traffic demands.[5] Terminal 4, the airport's largest capital improvement to date at $248 million, broke ground in October 1989 and commenced operations in November 1990; it initially featured 3.9 million square feet and 44 gates, later expanded to 94.[2] In 2000, the north runway underwent extension, and a third parallel runway opened alongside a new south-side cargo facility to accommodate growing jet operations and freight volume.[5] The existing 326-foot air traffic control tower, positioned east of the Terminal 3 parking garage and incorporating the Phoenix Terminal Radar Approach Control, entered service on January 14, 2007, replacing prior structures to enhance visibility and capacity for over 1,300 daily flights.[17] Terminal 4 received further upgrades, including a seventh concourse (D Concourse) in 2005 adding 180,000 square feet and gates D1-D8, followed by checkpoint expansions in 2009.[5] The PHX Sky Train automated people mover launched in stages: Stage 1 in 2013 linking Terminals 3 and 4, Stage 1A in 2014 connecting all terminals, and Stage 2 in 2022 extending 2.5 miles to the Rental Car Center with two new stations for 24/7 service.[5] Terminal 3's $590 million modernization, initiated in 2016, culminated in 2020 with renovated security checkpoints, ticketing areas, and concourses, including the North Concourse opening that year; Terminal 2 closed concurrently in February 2020 after remodeling in 2007.[2] An eighth concourse at Terminal 4, adding eight gates and 275,000 square feet, opened in June 2022.[5]Recent Developments and Ongoing Expansions
In response to record passenger traffic exceeding 52 million in 2024, an increase of 7.5% from the prior year, Phoenix Sky Harbor International Airport initiated several capital improvement projects to enhance capacity and operational efficiency.[18] These developments are guided by the airport's updated Comprehensive Asset Management Plan, which prioritizes airfield improvements and terminal connectivity to accommodate sustained growth in air travel demand.[19] Construction on the $326 million Terminal 3 North 2 Concourse began in April 2025, adding six new passenger gates and approximately 173,000 square feet of space to improve boarding facilities and passenger flow.[20] Undertaken by McCarthy Building Companies, the project aims to mitigate congestion in Terminal 3, which handles a significant portion of domestic flights, with completion targeted to support ongoing airline expansions.[21] Parallel efforts include the Taxiway U project, a 2,060-foot connector between the north and south airfields on the airport's west side, with initial construction phases starting in late 2024 to reduce taxi times and enhance safety.[22] The U.S. Department of Transportation allocated $84.3 million for this initiative in January 2025, addressing inefficiencies in airfield movements amid rising operations.[23] Additional ongoing work encompasses a post-security pedestrian bridge linking Terminals 3 and 4, set for construction in 2025 to streamline inter-terminal transfers, alongside Terminal 4 utility plant upgrades for improved mechanical reliability.[24] [25] Long-term plans outline a new terminal construction after 2030 on the site of former Terminals 1 and 2, funded through airport revenues to further expand gate capacity.[26] These projects collectively form part of the city's 2025-2030 Capital Improvement Program, emphasizing infrastructure resilience without relying on general taxpayer funds.[27]Facilities and Infrastructure
Terminals and Concourses
Phoenix Sky Harbor International Airport operates two active passenger terminals, Terminal 3 and Terminal 4, which together provide 117 aircraft gates for domestic and international operations. Terminal 2 ceased operations in 2020 after the consolidation of airlines during the COVID-19 pandemic. The terminals are linked post-security by the automated PHX Sky Train system, allowing passengers to transfer between them without reclearing security checkpoints. This configuration supports the airport's role as a major hub, particularly for American Airlines in Terminal 4, while Terminal 3 focuses on low-cost and regional carriers.[28][29][30] Terminal 3, officially designated the John S. McCain III Terminal, primarily handles domestic flights and features 25 gates across its existing concourses. It serves airlines including Southwest Airlines, Alaska Airlines, Frontier Airlines, Hawaiian Airlines, and Sun Country Airlines. The terminal includes multiple security checkpoints and access to ground transportation, with ongoing expansions addressing capacity constraints from rising passenger volumes. In April 2025, construction commenced on a $326 million project to add a second north concourse, incorporating six new gates and approximately 173,000 square feet of additional space for enhanced passenger amenities, shops, and dining options; the work is expected to improve operational efficiency amid record traffic exceeding 52 million passengers in 2024. Nightly closures of adjacent roadways, such as eastbound Sky Harbor Boulevard, have supported this construction through October 2025.[30][31][32][21] Terminal 4, known as the Barry M. Goldwater Terminal, is the airport's largest facility, accommodating 92 gates distributed across eight concourses labeled A through D, with sub-designations for boarding areas. It functions as the primary gateway for international flights, U.S. Customs and Border Protection processing, and serves as American Airlines' western hub, alongside Delta Air Lines, United Airlines, and various international carriers. Baggage claim facilities on the ground level include designation CLM1, primarily associated with American Airlines arrivals.[33] Concourse A handles most international arrivals and departures, while Concourses B, C, and D support extensive domestic routes; for instance, Concourse B includes gates B15–B22 for domestic operations and B23–B28 for international. The terminal features advanced facilities such as multiple TSA checkpoints, airline lounges, and retail outlets, with select areas undergoing renovations in 2025 to modernize spaces and boost capacity. This setup reflects the airport's evolution to manage over 40 million annual enplanements, driven by Phoenix's population growth and tourism.[34][35][29][36]Runways and Airfield Operations
Phoenix Sky Harbor International Airport operates three parallel concrete runways oriented approximately east-west, designated 7L/25R, 7R/25L, and 8/26, all with grooved surfaces in good condition and 150 feet in width.[37] The longest, runway 8/26, spans 11,489 feet and serves primarily for arrivals, particularly for long-haul and smaller aircraft, with a displaced threshold of 898 feet on the eastern end (runway 8).[37] [38] Runway 7L/25R extends 10,300 feet and functions mainly as a departure runway in prevailing west flow configurations.[37] [38] The innermost runway, 7R/25L, is 7,800 feet long and supports secondary arrival and departure operations.[37] [38]| Runway | Length (ft) | Width (ft) | Surface | Lighting | Approach Lights | Elevation (ft, low/high end) |
|---|---|---|---|---|---|---|
| 7L/25R | 10,300 | 150 | Concrete/grooved | HIRL | MALSR | 1,110.2 / 1,134.0 |
| 7R/25L | 7,800 | 150 | Concrete/grooved | HIRL | MALSR | 1,111.0 / 1,126.3 |
| 8/26 | 11,489 | 150 | Concrete/grooved | HIRL | MALSF | 1,111.1 / 1,134.7 |
Air Traffic Control Facilities
The air traffic control facilities at Phoenix Sky Harbor International Airport include the Airport Traffic Control Tower (ATCT) and the integrated Phoenix Terminal Radar Approach Control (TRACON), both operated by the Federal Aviation Administration (FAA). The ATCT stands 326 feet (99 m) tall and provides controllers with unobstructed visual oversight of the entire airfield, supporting safe and efficient aircraft movements on the ground and in the airport traffic area.[40][41] This structure, the airport's third control tower, commenced operations in early 2007 after construction to accommodate growing air traffic volumes.[40] The TRACON facility, housed within the same 320-foot overall tower building, spans 60,000 square feet and features 48 radar positions for monitoring and sequencing arrivals and departures.[41] It manages terminal airspace extending to a 40-mile radius from the airport up to 21,000 feet mean sea level (MSL), coordinating with en route centers for transitioning aircraft.[38] The combined facilities are situated at 3500 E Sky Harbor Blvd, positioned between Terminals 3 and 4 for optimal proximity to airfield operations.[42] These ATC assets handle the high-density traffic at one of the busiest U.S. airports, with the tower responsible for runway clearances, taxiing, and low-altitude departures, while the TRACON directs radar vectors and altitude assignments in the busy terminal environment.[38] Recent operational challenges, including staffing shortages, have occasionally led to reduced capacity during off-peak hours, contributing to delays as noted in FAA reports from October 2025.[43]Additional Amenities and Support Structures
Phoenix Sky Harbor International Airport provides various passenger amenities beyond core terminal functions, including multiple airline lounges accessible to eligible travelers. Terminal 4 houses the American Airlines Admirals Club, offering workspaces, refreshments, and showers, while Terminal 3 features the Delta Sky Club with similar amenities focused on relaxation and business needs.[44][29] Additional lounges include the United Club in Terminal 3 (formerly Terminal 2 area), The Centurion Lounge in Terminal 4 for American Express cardholders, the Escape Lounge, and Sapphire Lounge by The Club, each providing premium seating, dining options, Wi-Fi, and quiet areas.[44][45] The airport maintains the Phoenix Airport Museum, one of the largest airport art programs in the United States, featuring rotating exhibitions of local and regional art, sculptures, and cultural displays throughout terminals and concourses to enhance the passenger experience.[46] Other services include complimentary Wi-Fi coverage across all terminals, ATMs, information counters, passenger paging systems, and pet relief areas designed for traveling animals.[47][45] The facility has earned recognition as "America's Healthiest Airport" through initiatives like the Airport Health District, which promotes healthy eating with options such as salads and fresh produce at select vendors, alongside fitness walking paths and wellness programs.[48] Support structures include dedicated maintenance facilities for operational efficiency. Southwest Airlines operates an expanded Technical Operations Facility opened in March 2024, encompassing a 90,000-square-foot aircraft maintenance hangar with three bays, a 40,000-square-foot ground support equipment and provisioning area, and capabilities for daily scheduled and unscheduled aircraft repairs to sustain fleet reliability.[49][50] The PHX Sky Train system features a dedicated Maintenance and Storage Facility, designed for sustainable operations including vehicle storage, repair bays, administrative offices, and a control center to ensure the automated people mover's 24/7 functionality across its 3.2-mile guideway.[51][52] Additionally, the Airport Transportation and Maintenance Facility supports vehicle fleet upkeep with durable tilt-up concrete construction optimized for rapid repairs and minimal downtime.[53] The city's Airport Maintenance Department oversees broader infrastructure repairs, including runways and buildings, via a dedicated hotline for issue resolution.[54]Airlines and Destinations
Passenger Airlines and Routes
Phoenix Sky Harbor International Airport is served by 26 passenger airlines providing nonstop flights to 152 destinations, including 126 domestic and 26 international locations as of October 2025.[55] American Airlines operates as the primary hub carrier from Terminal 4, offering the largest number of departures and connections to over 90 U.S. cities, focusing on transcontinental routes to New York, Chicago, and Miami, as well as regional service across the Southwest.[56] Southwest Airlines, also based in Terminal 4, functions as a focus city with high-frequency domestic flights to more than 70 destinations, emphasizing point-to-point service to California hubs like Los Angeles and San Diego, Texas cities such as Dallas and Houston, and Midwest locations including Denver and Chicago.[29] Delta Air Lines and United Airlines provide significant connectivity from Terminals 3 and 4, respectively, with Delta serving around 40 nonstop domestic routes to Atlanta, Salt Lake City, and Seattle, while United connects to over 30 destinations including Denver, Houston, and San Francisco.[56] Low-cost carriers like Frontier Airlines and Spirit Airlines operate from Terminal 3, offering budget service to approximately 50 and 30 domestic cities each, such as Orlando, Las Vegas, and Minneapolis.[57] Alaska Airlines and Allegiant Air contribute additional domestic routes from Terminal 3 and 4, with Alaska focusing on West Coast cities like Seattle and Portland, and Allegiant providing leisure-oriented flights to smaller markets including Bellingham and Fresno.[58] International passenger routes from Phoenix primarily consist of leisure and business travel to Mexico and Canada, alongside limited European and Central American services. Nonstop flights to Mexican destinations such as Puerto Vallarta, Los Cabos, Guadalajara, and Mexico City are operated by American Airlines, Aeroméxico, and Volaris.[59] Canadian routes include Vancouver, Calgary, Toronto, Edmonton, and Montreal served by Air Canada, WestJet, and Porter Airlines.[59] European connections feature London Heathrow via British Airways, Paris Charles de Gaulle by Air France, and Frankfurt by Condor, while Southwest provides seasonal service to San José, Costa Rica.[60] Longer-haul options include seasonal flights to Taipei, Taiwan.[60] These international services account for a smaller portion of traffic compared to domestic operations, reflecting Phoenix's role as a domestic connecting hub.[55]Cargo Carriers and Freight Operations
Phoenix Sky Harbor International Airport maintains two primary cargo facilities: the South Air Cargo Complex and the West Air Cargo Complex, both fully occupied as of recent assessments. These complexes support freight handling for both dedicated cargo flights and belly cargo from passenger operations, processing over 1,000 tons daily.[61][62] Key cargo carriers include American Airlines and Southwest Airlines, which utilize aircraft belly holds for freight transport. Cargo from Air Canada, Alaska Airlines, British Airways, Delta Air Lines, Hawaiian Airlines, Sun Country Airlines, and United Airlines is handled by Swissport Cargo USA. Dedicated integrators such as DHL, FedEx, and UPS operate significant freight services, with FedEx maintaining an air freight center at the airport for parcel and express shipments. Handling agents like ABX Air, Swissport Cargo USA, and Worldwide Flight Services (WFS) provide ground support for loading, unloading, and warehousing.[61][63] In 2023, the airport processed 344,957 tons of cargo and 13,218 tons of mail, reflecting a decline from 407,027 tons in 2021 amid broader fluctuations in air freight demand.[62][61] Freight operations benefit from the airport's central location in the southwestern United States, facilitating distribution to regional markets, though PHX lacks a major dedicated cargo hub unlike facilities in Memphis or Louisville. Future expansions, including potential development at the North Air Cargo area under the Cargo Area Master Plan (CAMP), aim to accommodate projected year-over-year growth in volumes.[61]Traffic and Statistics
Historical and Annual Passenger Trends
Phoenix Sky Harbor International Airport's passenger traffic has grown substantially since the mid-20th century, driven by Arizona's population expansion, tourism to the Phoenix metropolitan area, and its role as a hub for low-cost carriers. Annual totals reached approximately 4.4 million passengers in the early 1970s, surging to 7 million after Terminal 3's opening in 1979, reflecting improved capacity and regional economic development.[2] By 2000, traffic exceeded 36 million, supported by network expansions from airlines like America West (later merged into US Airways) and Southwest Airlines.[64] Post-2000 trends showed consistent year-over-year increases averaging 3-5% annually through the mid-2000s, peaking at 42.2 million in 2007 amid strong domestic leisure travel demand.[64] The 2008 financial crisis caused a temporary dip to 39.9 million in 2008, followed by recovery to over 40 million by 2011, coinciding with Southwest's acquisition of AirTran and enhanced point-to-point routes.[64] Traffic stabilized around 40-44 million from 2012 to 2019, with 2019 marking a pre-pandemic high of 46.3 million passengers, bolstered by American Airlines' dominance after the US Airways merger.[64] The COVID-19 pandemic triggered a sharp decline, with 2020 totals plummeting 52% to 21.9 million due to travel restrictions and reduced demand.[64] Recovery accelerated post-2021, surpassing pre-pandemic levels by 2023 at 48.7 million, and reaching a record 52.3 million in 2024—a 7.5% increase—first breaching 50 million amid pent-up leisure travel and capacity expansions.[64][65] Early 2025 data indicated a slight slowdown, with January-June totals at 26.4 million, down 0.7% from 2024's comparable period, potentially reflecting moderated growth amid economic uncertainties.| Year | Total Passengers |
|---|---|
| 2000 | 36,044,281 |
| 2005 | 41,204,071 |
| 2010 | 38,554,530 |
| 2015 | 44,003,840 |
| 2019 | 46,288,337 |
| 2020 | 21,928,708 |
| 2021 | 38,846,713 |
| 2022 | 44,397,854 |
| 2023 | 48,654,432 |
| 2024 | 52,325,266 |
Leading Destinations by Volume
In 2023, Phoenix Sky Harbor International Airport handled approximately 48.7 million total passengers, with domestic routes comprising the vast majority of traffic volume due to the airport's position as a key domestic hub for American Airlines and Southwest Airlines.[67] The leading destinations reflect strong demand for travel to major U.S. cities, driven by factors such as population centers, business connections, and seasonal leisure travel to the Southwest and West Coast. Data from the U.S. Bureau of Transportation Statistics for the fiscal year spanning October 2022 to September 2023 indicate that the top 10 domestic destinations by total passengers (arrivals and departures) represented about 34% of overall airport passenger activity.[68]| Rank | Destination | Total Passengers | % of All Passengers | Primary Carriers |
|---|---|---|---|---|
| 1 | Denver, CO | 1,172,023 | 5.3% | Southwest, United, Frontier |
| 2 | Seattle/Tacoma, WA | 938,653 | 4.2% | Alaska, Delta, American |
| 3 | Las Vegas, NV | 876,589 | 4.0% | Southwest, American, Frontier |
| 4 | Chicago (O'Hare), IL | 840,950 | 3.8% | American, United, Southwest |
| 5 | Dallas/Fort Worth, TX | 732,374 | 3.3% | American, Frontier, Spirit |
| 6 | Los Angeles, CA | 721,637 | 3.3% | American, Southwest, SkyWest |
| 7 | Minneapolis/St. Paul, MN | 651,791 | 2.9% | Delta, Sun Country, American |
| 8 | San Diego, CA | 636,710 | 2.9% | Southwest, American, Frontier |
| 9 | Salt Lake City, UT | 625,826 | 2.8% | Delta, Southwest, American |
| 10 | Atlanta, GA | 586,548 | 2.7% | Delta, American, Southwest |
