Ontario International Airport is served by 20 airlines, flying from/to 31 destinationsLongest flight from Ontario International Airport is Ontario to 🇹🇼 Taipei (TPE), which takes around 14 hours and 30 minutes. On an airline like China Airlines. More info on this flight route (ONT-TPE).Shortest flight from Ontario International Airport is Ontario to 🇺🇸 Oxnard (OXR), which takes around 30 minutes. On an airline like Alpine Air Express. More info on this flight route (ONT-OXR).