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 Delta. There may also be other airline options depending on where in Canada you’re flying from.

WestJet Flights to St. Louis

There are 22 WestJet flights to St. Louis in a normal week. The most common departure point is Atlanta Hartsfield-Jackson and the best WestJet ticket price seen on momondo is C$ 421 (last 72 hours, from Halifax Intl, to St. Louis). WestJet has a score of 7.2 from 3,445 user reviews on momondo.

American Airlines Flights to St. Louis

American Airlines flights to St. Louis can start from as low as C$ 246 (round-trip, from Vancouver Intl, found in the last 72 hours). Over 30 flights that American Airlines operates to St. Louis in a normal week, prices can vary significantly. The most popular American Airlines flight to St. Louis is from Dallas/Fort Worth. American Airlines has been rated 7.1/10 by momondo users, in 12,036 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 5h 24m 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$ 234 Cheap Flights to St. Louis in 2026

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9:00 p.m. - 1:10 p.m.YYC Calgary-STL Lambert-St Louis

15h 10m2 stops Vancouver Intl Atlanta Hartsfield-Jackson

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

8h 21m1 stop Atlanta Hartsfield-Jackson

C$ 391Multiple Airlines

Thu, 24 Sep - Mon, 28 Sep

1:45 p.m. - 10:59 p.m.YVR Vancouver Intl-STL Lambert-St Louis

7h 14m1 stop Chicago O'Hare Intl

7:08 a.m. - 1:12 p.m.STL Lambert-St Louis-YVR Vancouver Intl

8h 04m1 stop San Francisco

C$ 409Lufthansa

Thu, 1 Oct - Wed, 7 Oct

12:10 p.m. - 10:30 p.m.YVR Vancouver Intl-STL Lambert-St Louis

8h 20m1 stop Houston George Bush Intcntl

5:36 p.m. - 10:26 p.m.STL Lambert-St Louis-YVR Vancouver Intl

6h 50m1 stop Chicago O'Hare Intl

C$ 410United Airlines

Tue, 13 Oct - Tue, 20 Oct

12:10 p.m. - 10:30 p.m.YVR Vancouver Intl-STL Lambert-St Louis

8h 20m1 stop Houston George Bush Intcntl

7:08 a.m. - 8:59 p.m.STL Lambert-St Louis-YVR Vancouver Intl

15h 51m1 stop San Francisco

C$ 421United Airlines

Thu, 24 Sep - Mon, 28 Sep

1:45 p.m. - 11:30 p.m.YVR Vancouver Intl-STL Lambert-St Louis

7h 45m1 stop Los Angeles

6:30 a.m. - 12:48 p.m.STL Lambert-St Louis-YVR Vancouver Intl

8h 18m1 stop Los Angeles

C$ 424American Airlines

Tue, 22 Sep - Tue, 29 Sep

2:17 p.m. - 11:40 p.m.YVR Vancouver Intl-STL Lambert-St Louis

8h 23m1 stop Salt Lake City

2:20 p.m. - 12:42 a.m.STL Lambert-St Louis-YVR Vancouver Intl

11h 22m1 stop Salt Lake City

C$ 428Delta

Thu, 19 Nov - Sun, 22 Nov

11:40 a.m. - 8:57 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

10h 17m1 stop Chicago O'Hare Intl

5:00 a.m. - 2:33 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 33m1 stop Chicago O'Hare Intl

C$ 428American Airlines

Wed, 14 Oct - Wed, 21 Oct

1:20 p.m. - 12:44 a.m.YVR Vancouver Intl-STL Lambert-St Louis

9h 24m1 stop Salt Lake City

2:22 p.m. - 10:36 p.m.STL Lambert-St Louis-YVR Vancouver Intl

10h 14m1 stop Salt Lake City

C$ 430Delta

Tue, 13 Oct - Tue, 20 Oct

7:15 a.m. - 2:00 p.m.YHZ Halifax Intl-STL Lambert-St Louis

8h 45m2 stops Ottawa Toronto Pearson Intl

2:40 p.m. - 9:54 p.m.STL Lambert-St Louis-YHZ Halifax Intl

5h 14m1 stop Toronto Pearson Intl

C$ 511Air Canada

Thu, 1 Oct - Mon, 5 Oct

7:15 a.m. - 2:00 p.m.YHZ Halifax Intl-STL Lambert-St Louis

8h 45m2 stops Ottawa Toronto Pearson Intl

2:40 p.m. - 11:55 p.m.STL Lambert-St Louis-YHZ Halifax Intl

7h 15m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

C$ 517Air Canada

Thu, 1 Oct - Mon, 5 Oct

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7:45 a.m. - 5:54 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

11h 09m1 stop Orlando

2:00 p.m. - 9:55 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

30h 55m2 stops Jonesboro Nashville Intl

C$ 738Multiple Airlines

Thu, 10 Sep - Sun, 13 Sep

4:45 p.m. - 1:21 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

21h 36m2 stops Nashville Intl Jonesboro

5:19 p.m. - 4:40 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

22h 21m1 stop Orlando

C$ 811Multiple Airlines

Thu, 10 Sep - Mon, 14 Sep

7:45 a.m. - 5:54 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

11h 09m1 stop Orlando

8:10 p.m. - 11:35 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

26h 25m2 stops Denver Intl Orlando

C$ 841Multiple Airlines

Thu, 10 Sep - Fri, 11 Sep

9:00 a.m. - 2:02 p.m.YHZ Halifax Intl-STL Lambert-St Louis

7h 02m1 stop Toronto Pearson Intl

8:55 a.m. - 5:14 p.m.STL Lambert-St Louis-YHZ Halifax Intl

6h 19m1 stop Toronto Pearson Intl

C$ 902Air Canada

Mon, 7 Sep - Mon, 14 Sep

9:00 a.m. - 2:02 p.m.YHZ Halifax Intl-STL Lambert-St Louis

7h 02m1 stop Toronto Pearson Intl

10:53 a.m. - 11:55 p.m.STL Lambert-St Louis-YHZ Halifax Intl

11h 02m2 stops Chicago O'Hare Intl Newark

C$ 945United Airlines

Mon, 7 Sep - Mon, 14 Sep

6:00 a.m. - 3:38 p.m.YOW Ottawa-STL Lambert-St Louis

10h 38m3 stops Washington, D.C. Dulles Intl Indianapolis Chicago O'Hare Intl

8:00 a.m. - 5:16 p.m.STL Lambert-St Louis-YOW Ottawa

8h 16m1 stop Chicago O'Hare Intl

C$ 952United Airlines

Wed, 9 Sep - Fri, 18 Sep

6:30 a.m. - 4:38 p.m.YHZ Halifax Intl-STL Lambert-St Louis

12h 08m2 stops New York LaGuardia Detroit Metropolitan Wayne County

6:00 a.m. - 9:10 p.m.STL Lambert-St Louis-YHZ Halifax Intl

13h 10m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

C$ 1,024Delta

Mon, 7 Sep - Mon, 14 Sep

7:15 p.m. - 8:20 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$ 1,213Air Canada

Thu, 10 Sep - Fri, 11 Sep

2:00 p.m. - 6:41 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

5h 41m1 stop Montreal Pierre Elliott Trudeau Intl

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

1h 54mdirect

C$ 1,217Air Canada

Thu, 10 Sep - Fri, 11 Sep

7:00 a.m. - 8:44 p.m.YOW Ottawa-STL Lambert-St Louis

14h 44m3 stops Toronto Pearson Intl Washington, D.C. Reagan-National Chicago O'Hare Intl

10:45 a.m. - 8:00 p.m.STL Lambert-St Louis-YOW Ottawa

32h 15m2 stops Washington, D.C. Reagan-National Toronto Pearson Intl

C$ 1,599American Airlines

Wed, 9 Sep - Fri, 18 Sep

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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$ 685Air Canada

Sat, 10 Oct - Tue, 13 Oct

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$ 685Air Canada

Tue, 13 Oct - Mon, 19 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$ 685Air Canada

Fri, 2 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$ 685Air Canada

Wed, 14 Oct - Mon, 19 Oct

7:15 p.m. - 8:20 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$ 955United Airlines

Fri, 2 Oct - Fri, 9 Oct

7:15 p.m. - 8:20 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$ 1,021United Airlines

Fri, 18 Sep - Sun, 20 Sep

2:10 p.m. - 3:23 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mdirect

4:05 p.m. - 6:59 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mdirect

C$ 1,021United Airlines

Thu, 29 Oct - Sat, 31 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$ 1,032United Airlines

Thu, 17 Sep - Wed, 23 Sep

5:00 p.m. - 6:46 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mdirect

12:15 p.m. - 3:46 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mdirect

C$ 1,277Jazz

Fri, 18 Sep - Mon, 21 Sep

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$ 1,302Multiple Airlines

Fri, 18 Sep - Sun, 20 Sep

Fly from

Route

Depart

Return

Price

Cheapest round-trip

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Thu 24/9

9:00 p.m.-1:10 p.m.

2 stops15h 10m

Lambert-St Louis

Mon 28/9

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

1 stop8h 21m

C$ 391

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 1/10

1:45 p.m.-10:59 p.m.

1 stop7h 14m

Lambert-St Louis

Wed 7/10

7:08 a.m.-1:12 p.m.

1 stop8h 04m

C$ 409

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Tue 13/10

12:10 p.m.-10:30 p.m.

1 stop8h 20m

Lambert-St Louis

Tue 20/10

5:36 p.m.-10:26 p.m.

1 stop6h 50m

C$ 410

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 24/9

12:10 p.m.-10:30 p.m.

1 stop8h 20m

Lambert-St Louis

Mon 28/9

7:08 a.m.-8:59 p.m.

1 stop15h 51m

C$ 421

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Tue 22/9

1:45 p.m.-11:30 p.m.

1 stop7h 45m

Lambert-St Louis

Tue 29/9

6:30 a.m.-12:48 p.m.

1 stop8h 18m

C$ 424

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 19/11

2:17 p.m.-11:40 p.m.

1 stop8h 23m

Lambert-St Louis

Sun 22/11

2:20 p.m.-12:42 a.m.

1 stop11h 22m

C$ 428

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Wed 14/10

11:40 a.m.-8:57 p.m.

1 stop10h 17m

Lambert-St Louis

Wed 21/10

5:00 a.m.-2:33 p.m.

1 stop8h 33m

C$ 428

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Tue 13/10

1:20 p.m.-12:44 a.m.

1 stop9h 24m

Lambert-St Louis

Tue 20/10

2:22 p.m.-10:36 p.m.

1 stop10h 14m

C$ 430

Quickest round-trip

HalifaxSt. Louis

YHZ Halifax Intl - STL Lambert-St Louis

YHZSTL

Halifax Intl

Thu 1/10

7:15 a.m.-2:00 p.m.

2 stops8h 45m

Lambert-St Louis

Mon 5/10

2:40 p.m.-9:54 p.m.

1 stop5h 14m

C$ 511

HalifaxSt. Louis

YHZ Halifax Intl - STL Lambert-St Louis

YHZSTL

Halifax Intl

Thu 1/10

7:15 a.m.-2:00 p.m.

2 stops8h 45m

Lambert-St Louis

Mon 5/10

2:40 p.m.-11:55 p.m.

2 stops7h 15m

C$ 517

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 October is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 539. If you don’t want to visit St. Louis in October, then you should wait until January to fly from Canada, when ticket prices are also cheap, with an average price of C$ 546.

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$ 620. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 840.

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 at noon when flights can be purchased for as low as C$ 633. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 989 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$ 705 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$ 496 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$ 583 in January
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	April	56% more expensive	It costs about C$ 1,107 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	262% 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$ 234
Best Round-Trip Price	C$ 391
Fastest flight time	7h 05m
Popular in	August

The best one-way flight price to St. Louis from Canada in the last 5 days is C$ 234 (Calgary 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$ 391 (Calgary to Lambert-St Louis).

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The fastest flight to St. Louis from Canada takes 7h 05m (Halifax Intl to Lambert-St Louis).

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August has the highest demand for flights to St. Louis, with a 13% 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 September 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.

St. Charles

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$ 361

Montreal to Lambert-St Louis Flightsfrom C$ 536

Vancouver to Lambert-St Louis Flightsfrom C$ 306

Ottawa to Lambert-St Louis Flightsfrom C$ 501

Calgary to Lambert-St Louis Flightsfrom C$ 283

Québec City to Lambert-St Louis Flightsfrom C$ 511

Edmonton to Lambert-St Louis Flightsfrom C$ 567

Halifax Intl to Lambert-St Louis Flightsfrom C$ 369

Victoria Intl to Lambert-St Louis Flightsfrom C$ 573

Saskatoon to Lambert-St Louis Flightsfrom C$ 890

Charlottetown to Lambert-St Louis Flightsfrom C$ 736

C$ 234 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 27/10. 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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What is the cheapest month to fly 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?

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Cheapest flights to Lambert-St Louis

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Cheap St. Louis flight deals and tips

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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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