Cheap American Airlines flights St. Louis (STL) to Ontario (ONT)

Find the cheapest month to fly from St. Louis (STL) to Ontario (ONT)

February is typically the cheapest month to fly

From $119 - $450 per traveler.

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Los Angeles - Ontario Intl. ONT. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $524
ONT
Los Angeles - Ontario Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $524
Flights from St. Louis (STL) to Ontario (ONT)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
Delta
Distance
2467 km