Bellingham International Airport (IATA: BLI, ICAO: KBLI, FAA LID: BLI) is three miles (5 km) northwest of Bellingham, in Whatcom County, Washington, United States. BLI covers 2,190 acres (886 ha) of land, and is the third-largest commercial airport in Washington.

Bellingham is a low-fare alternative to Vancouver International Airport, and an estimated 65% of customers come from Canada. It is only 54 miles (87 km) from downtown Vancouver, and only 23 miles (37 km) from the Peace Arch Border Crossing, where Greater Vancouver starts.