Which airlines fly to St. Louis?

Based on our data, the most popular airlines that fly to St. Louis from Canada are Air Canada, United Airlines, WestJet and American Airlines. There may also be other airline options depending on where in Canada you’re flying from.

Delta Flights to St. Louis

There are 27 Delta flights to St. Louis in a normal week. The most common departure point is Atlanta Hartsfield-Jackson and the best Delta ticket price seen on momondo is C$ 210 (last 72 hours, from Vancouver Intl, to St. Louis). Delta has a score of 7.8 from 8,503 user reviews on momondo.

WestJet Flights to St. Louis

WestJet flights to St. Louis can start from as low as C$ 457 (round-trip, from Halifax Intl, found in the last 72 hours). Over 31 flights that WestJet operates to St. Louis in a normal week, prices can vary significantly. The most popular WestJet flight to St. Louis is from Atlanta Hartsfield-Jackson. WestJet has been rated 7.2/10 by momondo users, in 3,430 reviews.

How long does it take to fly to St. Louis?

Flight times vary depending on what airport in Canada you fly out of and what airport in St. Louis you fly into. For example, flying from Toronto Pearson Intl to Lambert-St Louis takes 2h 05m on average. On the other hand, flying from Vancouver Intl to Lambert-St Louis takes 6h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.

C$ 218 Cheap Flights to St. Louis in 2026

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12:20 a.m. - 1:10 p.m.YYC Calgary-STL Lambert-St Louis

11h 50m1 stop Atlanta Hartsfield-Jackson

2:29 p.m. - 9:50 p.m.STL Lambert-St Louis-YYC Calgary

8h 21m1 stop Atlanta Hartsfield-Jackson

C$ 386Multiple Airlines

Thu, 17 Sep - Mon, 28 Sep

12:20 a.m. - 1:10 p.m.YYC Calgary-STL Lambert-St Louis

11h 50m1 stop Atlanta Hartsfield-Jackson

2:29 p.m. - 9:50 p.m.STL Lambert-St Louis-YYC Calgary

8h 21m1 stop Atlanta Hartsfield-Jackson

C$ 386Multiple Airlines

Thu, 17 Sep - Fri, 25 Sep

2:20 p.m. - 11:31 p.m.YVR Vancouver Intl-STL Lambert-St Louis

7h 11m1 stop Denver Intl

5:30 p.m. - 10:25 p.m.STL Lambert-St Louis-YVR Vancouver Intl

6h 55m1 stop Chicago O'Hare Intl

C$ 388United Airlines

Thu, 27 Aug - Tue, 8 Sep

3:35 p.m. - 11:40 p.m.YVR Vancouver Intl-STL Lambert-St Louis

6h 05m1 stop Denver Intl

12:59 p.m. - 10:25 p.m.STL Lambert-St Louis-YVR Vancouver Intl

11h 26m1 stop Chicago O'Hare Intl

C$ 388United Airlines

Sat, 29 Aug - Tue, 8 Sep

3:13 p.m. - 12:27 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

10h 14m1 stop Chicago O'Hare Intl

7:21 a.m. - 6:35 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

10h 14m1 stop Chicago O'Hare Intl

C$ 473American Airlines

Mon, 14 Sep - Mon, 21 Sep

6:30 a.m. - 1:16 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

7h 46m1 stop Chicago O'Hare Intl

5:00 a.m. - 2:32 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 32m1 stop Chicago O'Hare Intl

C$ 473American Airlines

Sat, 12 Sep - Sat, 19 Sep

6:35 a.m. - 11:16 p.m.YYC Calgary-STL Lambert-St Louis

15h 41m1 stop Minneapolis St Paul

6:15 a.m. - 5:00 p.m.STL Lambert-St Louis-YYC Calgary

11h 45m1 stop Minneapolis St Paul

C$ 502WestJet

Fri, 11 Sep - Sun, 13 Sep

11:40 a.m. - 2:49 p.m.YYC Calgary-STL Lambert-St Louis

26h 09m1 stop Atlanta Hartsfield-Jackson

5:46 p.m. - 11:00 a.m.STL Lambert-St Louis-YYC Calgary

18h 14m1 stop Atlanta Hartsfield-Jackson

C$ 509WestJet

Fri, 11 Sep - Sat, 12 Sep

12:33 p.m. - 12:44 a.m.YYC Calgary-STL Lambert-St Louis

11h 11m1 stop Salt Lake City

11:20 a.m. - 10:40 p.m.STL Lambert-St Louis-YYC Calgary

11h 20m1 stop Minneapolis St Paul

C$ 524Delta

Fri, 30 Oct - Tue, 3 Nov

6:35 a.m. - 11:16 p.m.YYC Calgary-STL Lambert-St Louis

15h 41m1 stop Minneapolis St Paul

5:47 p.m. - 8:42 p.m.STL Lambert-St Louis-YYC Calgary

27h 55m1 stop Minneapolis St Paul

C$ 524Delta

Fri, 18 Sep - Sat, 26 Sep

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2:12 p.m. - 11:42 p.m.YVR Vancouver Intl-STL Lambert-St Louis

7h 30m1 stop Dallas/Fort Worth

4:54 p.m. - 10:58 p.m.STL Lambert-St Louis-YVR Vancouver Intl

8h 04m1 stop Chicago O'Hare Intl

C$ 592American Airlines

Tue, 18 Aug - Tue, 25 Aug

7:20 p.m. - 4:34 p.m.YVR Vancouver Intl-STL Lambert-St Louis

19h 14m2 stops San Francisco Denver Intl

6:00 a.m. - 11:33 a.m.STL Lambert-St Louis-YVR Vancouver Intl

7h 33m1 stop Chicago O'Hare Intl

C$ 624United Airlines

Wed, 19 Aug - Mon, 24 Aug

1:20 p.m. - 12:41 a.m.YVR Vancouver Intl-STL Lambert-St Louis

9h 21m1 stop Salt Lake City

11:13 a.m. - 8:32 p.m.STL Lambert-St Louis-YVR Vancouver Intl

11h 19m1 stop Minneapolis St Paul

C$ 660Delta

Wed, 19 Aug - Mon, 24 Aug

7:20 p.m. - 3:38 p.m.YVR Vancouver Intl-STL Lambert-St Louis

18h 18m2 stops San Francisco Chicago O'Hare Intl

1:36 p.m. - 10:26 p.m.STL Lambert-St Louis-YVR Vancouver Intl

10h 50m2 stops Denver Intl Los Angeles Los Angeles

C$ 702United Airlines

Wed, 19 Aug - Mon, 24 Aug

12:09 p.m. - 5:14 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

6h 05m1 stop Detroit Metropolitan Wayne County

2:10 p.m. - 9:55 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

30h 45m2 stops Jonesboro Nashville Intl

C$ 773Multiple Airlines

Sat, 22 Aug - Sun, 30 Aug

6:34 p.m. - 11:31 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

5h 57m1 stop Atlanta Hartsfield-Jackson

6:25 p.m. - 8:55 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

13h 30m1 stop Detroit Metropolitan Wayne County

C$ 800WestJet

Sat, 22 Aug - Sun, 30 Aug

9:45 a.m. - 1:14 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

4h 29m1 stop Detroit Metropolitan Wayne County

6:20 a.m. - 6:34 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

11h 14m1 stop Minneapolis St Paul

C$ 800WestJet

Fri, 21 Aug - Fri, 28 Aug

7:15 p.m. - 8:24 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 09mdirect

8:55 a.m. - 11:56 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 01mdirect

C$ 931Air Canada

Sat, 22 Aug - Sat, 29 Aug

2:15 p.m. - 9:28 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

8h 13m1 stop Washington, D.C. Reagan-National

5:00 a.m. - 12:33 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

6h 33m1 stop Chicago O'Hare Intl

C$ 1,090American Airlines

Fri, 21 Aug - Sun, 6 Sep

9:30 a.m. - 8:31 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 01m1 stop New York LaGuardia

9:25 a.m. - 6:54 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

8h 29m1 stop New York LaGuardia

C$ 1,264Delta

Tue, 18 Aug - Wed, 26 Aug

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6:55 p.m. - 8:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 634Air Canada

Tue, 20 Oct - Tue, 27 Oct

6:55 p.m. - 8:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

8:55 a.m. - 11:49 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 634Air Canada

Thu, 1 Oct - Mon, 5 Oct

12:55 p.m. - 2:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

8:55 a.m. - 11:49 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 634Air Canada

Wed, 7 Oct - Fri, 9 Oct

7:15 p.m. - 8:22 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 07mdirect

8:55 a.m. - 11:52 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 57mdirect

C$ 638Air Canada

Fri, 4 Sep - Mon, 7 Sep

12:55 p.m. - 2:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

2:40 p.m. - 5:34 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 902United Airlines

Sat, 12 Sep - Sat, 19 Sep

6:55 p.m. - 8:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

2:40 p.m. - 5:34 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 902United Airlines

Fri, 16 Oct - Mon, 19 Oct

7:15 p.m. - 8:22 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 07mdirect

8:55 a.m. - 11:52 a.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 57mdirect

C$ 910United Airlines

Fri, 4 Sep - Mon, 7 Sep

12:55 p.m. - 2:00 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 956Multiple Airlines

Wed, 21 Oct - Wed, 4 Nov

7:15 p.m. - 8:20 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mdirect

2:40 p.m. - 5:34 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 1,100United Airlines

Mon, 28 Sep - Mon, 5 Oct

4:55 p.m. - 6:41 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mdirect

12:10 p.m. - 3:41 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mdirect

C$ 1,248Lufthansa

Fri, 9 Oct - Mon, 12 Oct

Fly from

Route

Depart

Return

Price

Cheapest round-trip

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Thu 17/9

12:20 a.m.-1:10 p.m.

1 stop11h 50m

Lambert-St Louis

Mon 28/9

2:29 p.m.-9:50 p.m.

1 stop8h 21m

C$ 386

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Thu 17/9

12:20 a.m.-1:10 p.m.

1 stop11h 50m

Lambert-St Louis

Fri 25/9

2:29 p.m.-9:50 p.m.

1 stop8h 21m

C$ 386

Quickest round-trip

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 27/8

2:20 p.m.-11:31 p.m.

1 stop7h 11m

Lambert-St Louis

Tue 8/9

5:30 p.m.-10:25 p.m.

1 stop6h 55m

C$ 388

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Sat 29/8

3:35 p.m.-11:40 p.m.

1 stop6h 05m

Lambert-St Louis

Tue 8/9

12:59 p.m.-10:25 p.m.

1 stop11h 26m

C$ 388

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Mon 14/9

3:13 p.m.-12:27 a.m.

1 stop10h 14m

Lambert-St Louis

Mon 21/9

7:21 a.m.-6:35 p.m.

1 stop10h 14m

C$ 473

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 12/9

6:30 a.m.-1:16 p.m.

1 stop7h 46m

Lambert-St Louis

Sat 19/9

5:00 a.m.-2:32 p.m.

1 stop8h 32m

C$ 473

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Fri 11/9

6:35 a.m.-11:16 p.m.

1 stop15h 41m

Lambert-St Louis

Sun 13/9

6:15 a.m.-5:00 p.m.

1 stop11h 45m

C$ 502

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Fri 11/9

11:40 a.m.-2:49 p.m.

1 stop26h 09m

Lambert-St Louis

Sat 12/9

5:46 p.m.-11:00 a.m.

1 stop18h 14m

C$ 509

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Fri 30/10

12:33 p.m.-12:44 a.m.

1 stop11h 11m

Lambert-St Louis

Tue 3/11

11:20 a.m.-10:40 p.m.

1 stop11h 20m

C$ 524

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Fri 18/9

6:35 a.m.-11:16 p.m.

1 stop15h 41m

Lambert-St Louis

Sat 26/9

5:47 p.m.-8:42 p.m.

1 stop27h 55m

C$ 524

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

St. Louis flights insights and trends

Explore insights for your St. Louis flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to St. Louis?

The month of January is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 548. If you don’t want to visit St. Louis in January, then you should wait until February to fly from Canada, when ticket prices are also cheap, with an average price of C$ 572.

What is the absolute cheapest flight to St. Louis?

See prices from:

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Wednesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 622. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 890.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the morning when flights can be purchased for as low as C$ 653. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 964 on average. Flights to St. Louis from Canada in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Canada when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around C$ 709 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Canada for as low as C$ 498 on momondo.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport

Find Flights from Toronto Pearson Intl Airport to St. Louis

CHEAPEST MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	January	18% cheaper	Flying from Toronto Pearson Intl Airport to St. Louis costs on average just C$ 585 in January
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	April	56% more expensive	It costs about C$ 1,111 for flights to St. Louis from Toronto Pearson Intl Airport in April
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	October	282% more users visited	More momondo users searched in flights to St. Louis from Toronto Pearson Intl Airport in October than any other month

Cheap St. Louis flight deals and tips

Summary info about St. Louis flight prices, duration and airlines

Best One-Way Price	C$ 218
Best Round-Trip Price	C$ 386
Fastest flight time	6h 36m
Popular in	August

The best one-way flight price to St. Louis from Canada in the last 5 days is C$ 218 (Vancouver Intl to Lambert-St Louis).

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The best round-trip flight price to St. Louis from Canada in the last 5 days is C$ 386 (Calgary to Lambert-St Louis).

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The fastest flight to St. Louis from Canada takes 6h 36m (Québec City to Lambert-St Louis).

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August has the highest demand for flights to St. Louis, with a 22% price increase on average.

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Frequently asked questions about flying to St. Louis

Is there an alternative airport near St. Louis?

Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.

When did momondo last update prices for flights to Lambert-St Louis Airport?

Prices for flights to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights to Lambert-St Louis Airport?

As of August 2026, there are 6 operators available to choose from for flights to Lambert-St Louis Airport.

How old do you have to be to fly to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal to St. Louis?

It is quick and easy to find flights to St. Louis on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis with this policy.

How can momondo help me find flights to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to St. Louis.

I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular Flights to St. Louis

Toronto to Lambert-St Louis Flightsfrom C$ 372

Montreal to Lambert-St Louis Flightsfrom C$ 483

Vancouver to Lambert-St Louis Flightsfrom C$ 317

Ottawa to Lambert-St Louis Flightsfrom C$ 412

Calgary to Lambert-St Louis Flightsfrom C$ 358

Saskatoon to Lambert-St Louis Flightsfrom C$ 532

Edmonton to Lambert-St Louis Flightsfrom C$ 491

Victoria Intl to Lambert-St Louis Flightsfrom C$ 515

Québec City to Lambert-St Louis Flightsfrom C$ 566

Halifax Intl to Lambert-St Louis Flightsfrom C$ 434

Charlottetown to Lambert-St Louis Flightsfrom C$ 789

C$ 218 Cheap flights to St. Louis

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 14/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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St. Louis flights insights and trends

What is the cheapest month to fly to St. Louis?

What is the absolute cheapest flight to St. Louis?

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What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

How far in advance should I book a flight to St. Louis?

How long does it take to fly to St. Louis?

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport

Cheap St. Louis flight deals and tips

Best One-Way Price

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Popular in

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An easier way to manage your Lambert-St Louis trip

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Popular Flights to St. Louis

Popular routes according to searches in the past day on momondo

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Popular flights according to clicks in the last 7 days on momondo

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