Grant County International Airport (IATA: MWH, ICAO: KMWH, FAA LID: MWH) is a public use airport located six miles (10 km) northwest of the central business district of Moses Lake in Grant County, Washington, United States.

[5][6] On 24 June 1969, Japan Airlines Flight 90, a Convair 880, crashed on take-off from runway 32R at Grant County International Airport.

The probable cause was a "delayed corrective action during a simulated critical-engine-out takeoff maneuver resulting in an excessive sideslip from which full recovery could not be effected."

In September 2019, Boeing stored 100 of its undelivered 737 MAX airplanes at the Moses Lake airport while it awaited clearance from the FAA and other aviation regulators to return the jet to commercial service.

Moses Lake is famous for good flying weather, as it is located on the east side of the Cascade Range, in the semi-arid desert of central Washington.

This was originally seen as an economic opportunity for the airport,[22] but later caused concern as the number of planes stored kept increasing, to approximately 130 by October 2019.