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C$ 331+ 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 18/6. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
19 Jun — 26 Jun1
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 20 May 2026.

Tue 16/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Tue 23/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 19/5C$ 528
Thu 9/712:55 p.m.
YYZ
-
STL
Nonstop2h 07m
Air Canada
Mon 13/72:40 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 20/5C$ 545
Fri 23/1012:55 p.m.
YYZ
-
STL
Nonstop2h 05m
Air Canada
Tue 27/104:15 p.m.
STL
-
YYZ
Nonstop1h 55m
Air Canada
Deal found 18/5C$ 593
Sun 7/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sat 20/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 20/5C$ 600
Tue 2/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Wed 17/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 18/5C$ 602
Mon 22/611:15 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Mon 29/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 19/5C$ 611
Sat 20/611:15 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 28/68:40 a.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 18/5C$ 613
Thu 11/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Tue 16/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 19/5C$ 617
Tue 16/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Wed 17/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 15/5C$ 619
Fri 26/611:15 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 28/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 20/5C$ 623

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 20 May 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

Fri 23/10

12:55 p.m.-2:00 p.m.

Nonstop2h 05m

Lambert-St Louis

Tue 27/10

4:15 p.m.-7:10 p.m.

Nonstop1h 55m

C$ 593
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 16/6

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

Nonstop2h 06m

Lambert-St Louis

Tue 23/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 601

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 2/6

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

Nonstop2h 06m

Lambert-St Louis

Wed 17/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 602

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 25/6

11:15 a.m.-12:21 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 28/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 611

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 25/6

11:15 a.m.-12:21 p.m.

Nonstop2h 06m

Lambert-St Louis

Mon 29/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 613

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 20/6

11:15 a.m.-12:21 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 28/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 613

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 16/6

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

Nonstop2h 06m

Lambert-St Louis

Mon 22/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 617

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 16/6

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

Nonstop2h 06m

Lambert-St Louis

Wed 17/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 619

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 26/6

11:15 a.m.-12:21 p.m.

Nonstop2h 06m

Lambert-St Louis

Mon 29/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 623

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 5/7

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

Nonstop2h 07m

Lambert-St Louis

Tue 7/7

2:40 p.m.-5:37 p.m.

Nonstop1h 57m

C$ 624

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/5

Showing 1-10 of 23 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 20 May 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
9,737 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,737 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,065 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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$ 409. If you're looking for a direct round-trip flight to St. Louis, you can expect to pay around C$ 669.

  • 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 25m on average. The quickest direct flight to St. Louis at this time departs from Toronto Pearson Intl Airport (2h 05m), 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, February is worth consideration, as prices are usually at their lowest, on average. April 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$ 558.

See more FAQs

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