Airport Guam Intl is located in Guam near the city of Agana. The international codes of Guam Intl airport are ICAO: PGUM and IATA: GUM. Guam Intl is located at latitude 13.4834 and longitude 144.796. The elevation above sea level is 298ft (91m). Local timezone at the airport is UTC/GMT +10:00 hours.