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C$ 342+ Direct flights to St. Louis

This is the cheapest price on a non-stop flight to St. Louis found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 2 April 2026.

Thu 16/42:10 p.m.
YYZ
-
STL
Nonstop2h 15m
Air Canada
Sun 19/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 28/3C$ 567
Mon 7/912:55 p.m.
YYZ
-
STL
Nonstop2h 07m
Air Canada
Thu 17/98:55 a.m.
STL
-
YYZ
Nonstop1h 54m
Air Canada
Deal found 30/3C$ 589
Wed 27/57:00 p.m.
YYZ
-
STL
Nonstop2h 09m
Air Canada
Wed 10/67:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 31/3C$ 614
Sat 23/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Fri 29/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 28/3C$ 617
Thu 7/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 10/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 27/3C$ 618
Sun 17/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 24/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 1/4C$ 629
Tue 28/42:10 p.m.
YYZ
-
STL
Nonstop2h 15m
Air Canada
Tue 5/52:15 p.m.
STL
-
YYZ
Nonstop1h 58m
Air Canada
Deal found 31/3C$ 661

Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Fare Finder

 
Use the slider to find non-stop flights to St. Louis within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 629,999 searches and data was last updated on 2 April 2026.
Use the filters below to find and compare direct flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 7/9

12:55 p.m.-2:02 p.m.

Nonstop2h 07m

Lambert-St Louis

Thu 17/9

8:55 a.m.-11:49 a.m.

Nonstop1h 54m

C$ 589
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/5

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Wed 10/6

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 615

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 23/5

7:00 p.m.-8:09 p.m.

Nonstop2h 09m

Lambert-St Louis

Fri 29/5

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 617

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 7/5

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 10/5

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 618

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 17/5

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 24/5

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 629

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 16/7

12:55 p.m.-2:02 p.m.

Nonstop2h 07m

Lambert-St Louis

Sat 18/7

8:55 a.m.-11:52 a.m.

Nonstop1h 57m

C$ 631

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 4/6

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Mon 8/6

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 631

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 28/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

Lambert-St Louis

Tue 5/5

2:15 p.m.-5:13 p.m.

Nonstop1h 58m

C$ 661

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 16/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

Lambert-St Louis

Sun 19/4

4:05 p.m.-7:02 p.m.

Nonstop1h 57m

C$ 714
Cheapest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 22/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

C$ 342

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/3

Showing 1-10 of 15 resultsSorted by cheapest first
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Reviews of airlines flying non-stop to St. Louis

Get insights into the airlines that provide direct flights to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 2 April 2026.
Read through reviews of airlines serving the United States, such as United Airlines and Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,533 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,533 reviews
United Airlines
7.4
Good
9,533 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
10,881 reviews
United Airlines
7.4
Good
9,533 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

FAQ about direct flights to St. Louis

Find answers to frequently asked questions about direct flights to St. Louis to unlock the best deals on Cheapflights.

  • How much are direct flights to St. Louis?

    On average, a one-way direct flight to St. Louis will cost users approximately C$ 498. If you're looking for a direct round-trip flight to St. Louis, you can expect to pay around C$ 1,285.

  • Which airlines fly direct to St. Louis?

    At the moment, Air Canada, United Airlines offer direct flights to St. Louis. Air Canada is currently the most popular airline that flies direct to St. Louis.

  • How long is a direct flight to St. Louis?

    While the flight duration depends heavily on the origin, travellers can expect non-stop flights to St. Louis to last approximately 2h 26m on average. The quickest direct flight to St. Louis at this time departs from Toronto Pearson Intl Airport (2h 06m), while the longest leaves from Montreal Pierre Elliott Trudeau Intl Airport (2h 46m).

  • What is the best time of year to fly direct to St. Louis?

    If you're seeking the lowest price on a direct flight to St. Louis, May is worth consideration, as prices are usually at their lowest, on average. January may be most appealing to users looking for the quietest time to visit St. Louis, when demand is typically at its lowest.

  • What is the most popular direct flight origin to St. Louis?

    Currently, the most popular direct flight origin to St. Louis is Toronto Pearson Intl Airport. A round-trip direct flight from Toronto Pearson Intl Airport to St. Louis typically costs around C$ 1,285.

See more FAQs

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