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C$ 274+ 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 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
15 Feb — 22 Feb1
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 16 January 2026.

Sat 28/22:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Sat 7/34:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 14/1C$ 439
Sat 21/22:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Wed 25/24:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 14/1C$ 474
Wed 11/22:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Wed 18/24:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 14/1C$ 499
Fri 6/32:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Sun 8/34:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 13/1C$ 500
Wed 4/22:00 p.m.
YYZ
-
STL
Nonstop2h 15m
Air Canada
Sun 8/24:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 15/1C$ 567
Thu 26/32:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Mon 30/34:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 14/1C$ 574
Wed 27/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Wed 10/67:30 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 14/1C$ 578
Thu 29/12:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Sun 1/24:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Deal found 15/1C$ 588
Sun 17/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 24/52:20 p.m.
STL
-
YYZ
Nonstop1h 58m
Air Canada
Deal found 14/1C$ 599
Fri 24/42:10 p.m.
YYZ
-
STL
Nonstop2h 14m
Air Canada
Sun 26/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 15/1C$ 668

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 16 January 2026.
Use the filters below to find and compare direct flights to St. Louis that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 28/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sat 7/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 439

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 25/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Wed 25/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 474

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 6/3

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 8/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 500

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 20/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 22/2

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 567

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 4/2

2:00 p.m.-3:15 p.m.

Nonstop2h 15m

Lambert-St Louis

Sun 8/2

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 567

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/3

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Mon 30/3

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

Nonstop1h 57m

C$ 574

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

7:30 a.m.-10:21 a.m.

Nonstop1h 51m

C$ 578

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 5/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 8/2

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 586

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 29/1

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 1/2

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 588

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 8/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Fri 13/2

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 588

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/1

Showing 1-10 of 21 results
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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 16 January 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
9,165 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,165 reviews
United Airlines
7.4
Good
9,165 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,625 reviews
United Airlines
7.4
Good
9,165 reviews
Check prices

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.

  • 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 55m on average. The quickest direct flight to St. Louis at this time departs from Montreal Pierre Elliott Trudeau Intl Airport (2h 55m), while the longest leaves from Montreal Pierre Elliott Trudeau Intl Airport (2h 55m).

  • 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 Montreal Pierre Elliott Trudeau Intl Airport. A round-trip direct flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis typically costs around C$ 498.

See more FAQs

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