Find Cheap Flights from Ontario International Airport (ONT)

Ontario International Airport (IATA: ONT, ICAO: KONT) serves Ontario, United States. 9 airlines operate 24 scheduled routes from this airport, reaching 14 destinations in 2 countries.

You can book flights from ONT through Aviafares at the same published fares you'd see on any airline's own site, and our US booking team pulls unpublished consolidator rates on premium cabins that don't show up in public search. If you need help with a complex itinerary, a schedule change, or just want a second opinion on the best routing, call our 24/7 line.

Field elevation: 944 ft.

Where ONT flies

Top destinations from ONT by airline coverage include Denver (DEN), Guadalajara (GDL), Phoenix (PHX), Dallas-Fort Worth (DFW). Scroll below for the full list with connecting airlines.

Airlines at ONT

9 major carriers operate out of ONT, led by Southwest Airlines, American Airlines, United Airlines. Every active airline with scheduled service from this airport is listed below.

24/7 booking assistance

Changes, cancellations, schedule irregularities, and refunds on any ONT ticket are handled by our US-based booking team around the clock. If your flight is cancelled or rescheduled, we rebook you on the next available option at the airline's published fees. Call the number at the top of this page or request a callback.