The name of the airport: Bangor International Airport. The airport is located in the country: United States. The city location of the airport in Bangor. IATA airport code Bangor International Airport: BGR. The IATA airport code is a 3 letter unique identifier, assigned airports world International air transport Association (IATA). ICAO airport code Bangor International Airport: KBGR. The ICAO airport code is a 4 letter unique identifier that is assigned to the airports by the International civil aviation organization (ICAO).