
Popular airlines from Toronto to St. Louis, MO (STL-Lambert-St. Louis Intl.)
- WestJet
WestJet
- American Airlines
American Airlines
- Delta
Delta
- Air Canada
Air Canada
- United
United
- Plan, book, fly with confidence
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Cheap flights from Toronto (YTO) to St. Louis (STL)
Prices were available within the past 7 days and start at CA $254 for one-way flights and CA $437 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Toronto (YTO) to St. Louis (STL)
June is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Pearson Intl. |
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | Air Canada, American Airlines, Delta, United, WestJet |
Roundtrip price | CA $436 |
Distance | 1046 km |
Ontario to St. Louis Flights
The easy way to book your flights from Toronto to St. Louis
With Expedia, it’s simple to find and book flights to St. Louis from Toronto whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.
Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Toronto to St. Louis today, tomorrow, or this week.
Save dollars with cheap flights from YTO-All Airports, YTO to Lambert-St. Louis Intl., STL
Sort your search results by price to find great deals on your flight from Toronto to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Toronto currently is just CA $437 rising to CA $758.
Here are more money-saving tips:
- Fly in October when flight prices are normally at their lowest
- Book about a month to 6 weeks before you travel for the best prices to St. Louis
- Avoid peak season and weekends when flights can cost more
- Early morning and late-night flights are sometimes cheaper, so try varying your travel times
- One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!
Reasons to choose Expedia for your flight to St. Louis from Toronto
Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.
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Top Routes from Toronto
- Toronto to Calgary (YTO - YYC)
- Toronto to Vancouver (YTO - YVR)
- Toronto to Fort Lauderdale (YTO - FLL)
- Toronto to Lisbon (YTO - LIS)
- Toronto to New York (YTO - NYC)
- Toronto to Delhi (YTO - DEL)
- Toronto to London (YTO - LON)
- Toronto to Halifax (YTO - YHZ)
- Toronto to Tokyo (YTO - TYO)
- Toronto to Cancun (YTO - CUN)
Top Routes to St. Louis
- Ottawa to St. Louis (YOW - STL)
- Calgary to St. Louis (YYC - STL)
- Detroit to St. Louis (DTW - STL)
- Saskatoon to St. Louis (YXE - STL)
- Winnipeg to St. Louis (YWG - STL)
- Halifax to St. Louis (YHZ - STL)
- Salt Lake City to St. Louis (SLC - STL)
- Québec to St. Louis (YQB - STL)
- Victoria to St. Louis (YYJ - STL)
- Seattle to St. Louis (SEA - STL)
- Montreal to St. Louis (YUL - STL)
- Buffalo to St. Louis (BUF - STL)
Top Routes from Toronto
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Toronto
Kitchener
Hamilton
London
Main Airports for Flights
- Pearson Intl. Airport (YYZ)
- Billy Bishop Toronto City Airport (YTZ)
- John C. Munro Hamilton Intl. Airport (YHM)
- Region of Waterloo Intl. Airport (YKF)
- London Intl. Airport (YXU)
- Muskoka Airport (YQA)
- Chris Hadfield Airport (YZR)
- Norman Rogers Airport (YGK)
- Windsor Airport (YQG)
- Jack Garland Airport (YYB)
Expedia's Latest Trends
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- Air India Vancouver (YVR) to Delhi (DEL) flights
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