₹15,940 Cheap Flights from Ontario (ONT) to St. Louis (STL)

Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey from ONT to STL was ₹38,205. Fares this good don’t wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.

This can differ between air carriers, as each has its own terms and conditions. Head to the Customer Service Portal, where you’ll find easy instructions on how to cancel online.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Los Angeles - Ontario Intl. Airport (ONT) to STL flights, you’ll see a “no change fees” filter for you to select.

The flying distance from Ontario Airport to St. Louis Lambert International Airport is 2,500 kilometres. Sneak in a nap or finish off your latest read and the trip will zip by.

If you want to fly straight from Los Angeles - Ontario Intl. Airport (ONT) to Lambert-St. Louis Intl. Airport (STL), you’ll have to book a flight with one or more stops. Unfortunately, there are no airlines that fly directly between these airports.

Booking your trip from Ontario Airport to St. Louis Lambert International Airport last minute could save you some serious cash. However, you might miss out on a flight altogether! If you’d prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back often as deals are updated all the time on Expedia.