FLY 2 BELLINGHAM INTERNATIONAL AIRPORT 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.