Minneapolis–Saint Paul International Airport

Minneapolis–Saint Paul International Airport (IATA: MSP, ICAO: KMSP, FAA LID: MSP) — also less commonly known as Wold–Chamberlain Field — is a joint civil-military public international airport serving the Twin Cities in the U.S. state of Minnesota. It is located in Fort Snelling Unorganized Territory and sections of the airport border the city limits of Minneapolis and Richfield however the airport property is not part of any city or school district. Although situated within the unorganized territory, the airport is centrally located within 10 miles (16 kilometers; 9 nautical miles) of both downtown Minneapolis and downtown Saint Paul. In addition to primarily hosting commercial flights from major American and some international airlines, the airport is also home to several United States Air Force and Minnesota Air National Guard operations. The airport is also used by a variety of air cargo operators. MSP, along with Detroit Metropolitan Airport, regularly contends for the busiest airport in the Upper Midwest.

A joint civil-military airport, MSP is home to the Minneapolis–Saint Paul International Airport Joint Air Reserve Station, supporting both Air Force Reserve Command and Air National Guard flight operations. Units stationed there include the 934th Airlift Wing (934 AW). MSP covers 2,930 acres (1,186 ha) of land. The airport generates an estimated $15.9 billion a year for the Twin Cities' economy and supports 87,000 workers.

MSP is a major hub for Delta Air Lines. It also serves as the home airport for Minnesota-based Sun Country Airlines and Endeavor Air, a Delta subsidiary. Delta Air Lines and its regional affiliates account for about 70% of the airport's passenger traffic. The airport is operated by the Metropolitan Airports Commission, which also handles the operation of six smaller airports in the region.

What is now known as Minneapolis–Saint Paul International Airport started in 1919 as Speedway Field when several local groups came together to take control of the former bankrupt Twin City Speedway race track. The first hangar was a wooden structure, constructed in 1920 for airmail services. The Minneapolis Park Board took possession of Speedway Field on June 1, 1928, and in 1929, passenger services began. In 1923, the airport was renamed "Wold–Chamberlain Field" for the World War I pilots Ernest Groves Wold and Cyrus Foss Chamberlain. In 1944 the site was renamed to "Minneapolis–St. Paul Metropolitan Airport/Wold-Chamberlain Field", with "International" replacing "Metropolitan" four years later. Today it is rare to see the Wold–Chamberlain portion of the name used anywhere.

Ground was broken for the current Terminal 1 building on October 26, 1958. The US $8.5 million, 600,000 square foot (56,000 m²) terminal with 24 gates on two concourses was designed by Lyle George Landstrom. who worked for Cerny Associates. The terminal, then referred to as the New Terminal, was completed on January 13, 1962, and operations began on January 21. Pier D (formerly the Gold Concourse, now Concourse G) was completed in 1971 and Pier A (formerly the Green Concourse, now Concourse C) was completed in 1972 as part of an expansion of the terminal designed by Cerny Associates. This project also involved rebuilding the existing concourses into bi-level structures equipped with holding rooms and jet bridges. The Gold Concourse was expanded in 1986 and included the airport's first moving walkway. Concourses A and B opened on June 1, 2002, as part of a $250 million terminal expansion designed by Minneapolis-based Architectural Alliance. The final component of the project included a $17.5 million extension of Concourse C consisting of six additional gates, which opened on October 31, 2002.

Terminal 2 was first built in 1986 and then rebuilt in 2001. It is used mostly for charter and low cost airlines, including Minnesota-based Sun Country and Southwest, but is also used for Condor, Frontier, and Icelandair. The terminal has since been expanded and has a total of 14 gates. The colored labeling system for concourses in both terminals was replaced beginning in 2000 with the current system of lettered concourses.

Due in part to aircraft noise in south Minneapolis, the Highland Park neighborhood in St. Paul, and surrounding suburbs, proposals were made in the 1990s to build a new airport on the fringes of the Twin Cities metro in Dakota County to handle larger jets and more international traffic. Minneapolis, St. Paul, and other neighboring cities were concerned that such a move would have a negative economic impact, so an arrangement was made where the Metropolitan Airports Commission would outfit many homes in the vicinity of the airport with sound insulation and air conditioning so that indoor noise could be reduced. A citizen group named ROAR (Residents Opposed to Airport Racket) was created in 1998 and helped push the MAC to make these concessions. Later, in 2004, the MAC voted to reduce funding for the soundproofing projects, saying in part that the economic climate had turned in the wake of the September 11 attacks. Minneapolis Mayor R. T. Rybak, who had been a founding member of ROAR, promised that the city would challenge the changes. In 2005, the cities of Minneapolis, Eagan, and Richfield and the Minneapolis Public Housing Authority filed a lawsuit against the MAC, which was settled with a Consent Decree in 2007. The terms in the Consent Decree specified levels of sound insulation for homes within a fixed boundary of projected aircraft noise exposure around MSP. Upon the completion of the noise mitigation program in 2014, more than 15,000 single-family homes and 3,303 multi-family units around MSP were provided noise mitigation at cost of $95 million.

A 2022 J.D. Power survey concluded that with ranking the largest US and Canadian airports on a 1,000 point scale based on traveler satisfaction, the airport received a score of 800, ranking it the best airport in the US and Canada. MSP's high ranking was accredited to its recently updated facilities.