Flights from Ontario (ONT) to St Louis (STL)
starting at $319

Find the Cheapest ONT to STL Airfares

Departing
Day
Month
Returning
Day
Month
One stop flights ONT to STL
American Airlines
from $500
United Airlines
from $500

Our flights from ONT to STL

You can catch a flight from ONT to STL on any day of the week.

The most common aircraft type flying between ONT to STL is Boeing 737-800.

The day with the most flights from ONT to STL is Sunday.

Our cheapest flight from ONT to STL was in April at just $319.

Cheapest Day To Fly from Ontario (ONT) to St Louis (STL)
Airfares for flights from ONT to STL displayed on this page are per person, for economy class e-tickets and include all taxes and fees in USD. They represent historical values for round trip flights from ONT to STL found by Flying.com customers. Fares are subject to change, and may not be available on this route, for all travel dates.
Flights from Ontario (ONT) to St Louis (STL)
Carrier Mon Tue Wed Thu Fri Sat Sun Earliest
Flight
Latest
Flight
American Airlines465-88801:1016:35
United Airlines112231505:4519:05
Disclaimer
Prices displayed on this page are per person, for economy class e-tickets and include all taxes and fees in USD. They represent historical values found by Flying.com customers. Fares are subject to change, and may not be available on all routes, for all travel dates.