Guam International Airport is served by 7 airlines, flying from/to 9 destinationsLongest flight from Guam International Airport is Guam to 🇯🇵 Osaka (KIX), which takes around 4 hours. On an airline like United Airlines. More info on this flight route (GUM-KIX).Shortest flight from Guam International Airport is Guam to 🇲🇵 Saipan Island (SPN), which takes around 45 minutes. On an airline like United Airlines. More info on this flight route (GUM-SPN).