Starting at $130
Helping travelers to find the best flight offers
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Saint Louis to Ontario:
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
A direct flight is the most convenient and comfortable way to fly from Saint Louis to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
Below you will find a list of airlines operating flights on the Saint Louis — Ontario route and the starting prices for flights of each specific airline on it.
Starting at $130
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Saint Louis to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Saint Louis to Ontario
Saint Louis — Los Angeles
05/12/2025
Departure date
Direct flight
AA3242
Starting at $293
Saint Louis — Los Angeles
05/17/2025
Departure date
Direct flight
WN3159
Starting at $236
Saint Louis — Los Angeles
05/18/2025
Departure date
Direct flight
AA3242
Starting at $440
Saint Louis — Los Angeles
06/09/2025
Departure date
Direct flight
WN2391
Starting at $266
The cheapest flight ticket from Saint Louis to Ontario according to data for the last 48 hours costs $93
Often the best time to buy tickets from Saint Louis to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Saint Louis to Ontario can be found flying in these months: June.
The fastest flights from Saint Louis to Ontario start from 5 hours 44 minutes in the air.
The following airlines operate direct flights on the route Saint Louis — Ontario: American Airlines, Southwest Airlines
Unable to find information about the schedule of direct flights from
We couldn't find any special offers for flights from Saint Louis to Ontario
The cheapest one-way flight from Saint Louis to Ontario departs on 05/13/2025, is operated by Frontier Airlines and costs $93
There is no information about the cheapest roundtrip flight from Saint Louis to Ontario
Fastest flight from Saint Louis to Ontario takes 5h 44m
There are no direct flights on this route.
The distance between Saint Louis and Ontario is 2500km (1550 miles). The time difference between Saint Louis and Ontario is 2h .
