Departure time
Airlines
Fares are the lowest prices found recently and can change when you click through. You book on the airline's or travel agency's website. AirTriply may earn a commission at no extra cost to you.
Lowest fare$159
Cheapest monthDecember 2026
Typical flight time4h 56m
Direct flightsNo
Lowest fare by month
Airlines on this route
Frequently asked questions
What is the cheapest month to fly from St Louis to Ontario?
December 2026 has had the lowest recent fares, from $159 one way.
How long is the flight from St Louis to Ontario?
A typical flight takes about 4h 56m.
Are there direct flights from St Louis to Ontario?
No direct flights were found recently. Most trips include a stop.
Where do I book my ticket?
AirTriply compares fares from airlines and travel agencies. When you choose a deal, you book on the seller's own website.
