Best airfares from St Louis to Ontario
Jetradar compares airfares from St Louis to Ontario with hundreds of airlines (including United Airlines, American Airlines, Alaska Airlines) and dozens of online travel agencies in one single place. We provide you with all the options to find the cheapest flights to Ontario, you choose where to book. Also there you can find airlines special offers from St Louis to Ontario. The cheapest round-trip price found within the last week was ₹12,747. The cheapest oneway price found within the last week was ₹8,519.Cheapest Flights from St Louis, MO to Ontario, CA
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Airline One Way One Way / Round-Trip Round-Trip 
United Airlines ₹14,176 ₹23,957 
American Airlines ₹12,731 ₹23,733 
Alaska Airlines ₹18,116 ₹26,325 
Frontier Airlines ₹14,787 ₹17,429 
Southwest Airlines Find Find -
Airline One Way One Way / Round-Trip Round-Trip 
Volaris Find ₹56,278
Flights from St Louis to Ontario
Travelling from St Louis to Ontario advices and facts
- The distance between St Louis and Ontario is 1557 miles (or 2505 kilometers).
- The shortest flight time is 4h 58m
- When you fly from St Louis to Ontario, don't forget about the time difference. The time in Ontario is -2:00 from the St Louis time. The current time in Ontario is 03:03 and 05:03 in St Louis. Check this again shortly before your flight.