Airport station is a rapid transit station in Boston, Massachusetts. It serves the MBTA Blue Line and the SL3 branch of the Silver Line. It is located in East Boston under the interchange between Interstate 90 and Massachusetts Route 1A. The station provides one of two mass transit connections to the nearby Logan International Airport, as well as serving local residents in East Boston. Shuttle buses connect the station with the airport terminals and other facilities.

At Airport, Blue Line trains switch between the third rail power used in the East Boston Tunnel to overhead wires used on the surface line to Revere. The original brick station built in 1952 was replaced by a modern station with steel and glass canopies in 2004.

Airport station is located in East Boston at the western edge of Logan International Airport within the interchange of Interstate 90 and Massachusetts Route 1A. It has two side platforms serving the two tracks of the Blue Line, which runs approximately northeast–southwest at street level through the station. A trainshed covers the tracks; it is intersected by a taller, north–south volume that contains the fare lobby and two footbridges (one outside the paid area) over the tracks.

The west entrance to the station serves residential portions of East Boston via Bremen Street Park, with a footbridge over the northbound lanes of Route 1A. The east entrance primarily serves a busway off Transportation Way; a footpath also connects to residential areas to the south, East Boston Memorial Park, and the East Boston Greenway.

Massport operates the Massport Shuttle, a free bus service between Airport station, the four airport terminals, the rental car center (RCC), offices and cargo terminals on the south side of the airport, and the MBTA ferry/water taxi terminal. Airport station is served by routes 22, 33, 55, 66, and 88. The busway is also used by MBTA Silver Line route SL3 and MBTA bus routes 104 and 171.

The Metropolitan Transit Authority (MTA) opened the first phase of the Revere Extension on January 5, 1952, with new stations at Airport, Wood Island, and Orient Heights. This phase connected the East Boston Tunnel at Maverick to the Boston, Revere Beach and Lynn narrow gauge right of way between Wood Island and Orient Heights. For a short distance that includes Airport station, this connecting line follows a right of way, now the East Boston Greenway, that was once used by the Grand Junction Railroad and the Eastern Railroad. Airport was the first American urban transit connection to a commercial airport. The station was modernized in 1967–68 as part of a $9 million systemwide station improvement program.

Construction of ramps for the Big Dig project required relocation of the Blue Line between Airport station and Wood Island station around 1999–2000. Overhead catenary was re-installed between Maverick and Airport stations as part of the work. On November 5, 1999, Maverick replaced Airport as the new transition point between third rail and catenary power.

In April 2000, the Massachusetts Bay Transportation Authority began construction on a $23 million project to replace the 1952-built station. The new station, located approximately 500 feet east of the old station due to Big Dig relocation of highway ramps, opened June 3, 2004. It is fully accessible, with the platforms connected by a pedestrian bridge with elevators, and has longer platforms than the previous station in order to accommodate 6-car trains (which began operation in 2008). The station includes several features to serve airport travelers, including luggage slides adjacent to the faregates, wider escalators and elevators, and monitors showing flight statuses.