Airport · Ontario, United States
Ontario International Airport (ONT)
IATA ONTICAO KONT15 airlines45 destinationsUnited States
Local time zone: America/Los_Angeles · currently 9:53 AM local
Ontario International Airport (ONT) currently has nonstop service to 45 destinations on 15 airlines in our latest departure data. The busiest route is to Denver (DEN), served by 3 carriers, and the largest operator here is Southwest Airlines with nonstops to 17 destinations. 5 of its routes are international.
Route data as of June 15, 2026, based on a 7-day departures sample.
Where can you fly nonstop from ONT?
You can fly nonstop from ONT to 45 destinations, including 5 international routes. Current schedules show about 92 flights per day across those routes. The busiest options start with Denver (DEN), Seattle (SEA), Dallas (DFW).