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 25 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$ 209 (last 72 hours, from Vancouver Intl, to St. Louis). Delta has a score of 7.8 from 8,530 user reviews on momondo.

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 7h 51m 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$ 241 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. - 11:00 a.m.STL Lambert-St Louis-YYC Calgary

21h 31m1 stop Atlanta Hartsfield-Jackson

C$ 409Multiple Airlines

Tue, 15 Sep - Fri, 18 Sep

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. - 4:23 p.m.STL Lambert-St Louis-YVR Vancouver Intl

11h 15m1 stop San Francisco

C$ 420United Airlines

Thu, 24 Sep - Mon, 28 Sep

7:00 a.m. - 1:10 p.m.YYC Calgary-STL Lambert-St Louis

29h 10m1 stop Atlanta Hartsfield-Jackson

2:29 p.m. - 11:00 a.m.STL Lambert-St Louis-YYC Calgary

21h 31m1 stop Atlanta Hartsfield-Jackson

C$ 422Multiple Airlines

Tue, 15 Sep - Fri, 18 Sep

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

8h 04m1 stop San Francisco

C$ 422United Airlines

Sun, 11 Oct - Sat, 17 Oct

11:40 a.m. - 12:27 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

13h 47m1 stop Chicago O'Hare Intl

1:49 p.m. - 11:26 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 37m1 stop Chicago O'Hare Intl

C$ 458American Airlines

Sat, 19 Sep - Wed, 30 Sep

11:40 a.m. - 12:27 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

13h 47m1 stop Chicago O'Hare Intl

7:27 a.m. - 5:44 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

9h 17m1 stop Chicago O'Hare Intl

C$ 480American Airlines

Sat, 12 Sep - Sat, 26 Sep

6:30 a.m. - 11:18 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

17h 48m1 stop Minneapolis St Paul

11:44 a.m. - 11:26 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

10h 42m1 stop Minneapolis St Paul

C$ 485Delta

Mon, 23 Nov - Sat, 5 Dec

7:24 p.m. - 8:40 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

14h 16m1 stop Minneapolis St Paul

6:15 a.m. - 11:13 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

15h 58m1 stop Minneapolis St Paul

C$ 485Delta

Tue, 29 Sep - Mon, 5 Oct

5:15 a.m. - 2:00 p.m.YHZ Halifax Intl-STL Lambert-St Louis

10h 45m1 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$ 534Air Canada

Wed, 23 Sep - Wed, 30 Sep

11:10 p.m. - 9:21 p.m.YVR Vancouver Intl-STL Lambert-St Louis

20h 11m2 stops Calgary Chicago O'Hare Intl

12:10 p.m. - 8:15 p.m.STL Lambert-St Louis-YVR Vancouver Intl

10h 05m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 618Air Canada

Mon, 19 Oct - Thu, 22 Oct

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7:00 a.m. - 8:46 p.m.YVR Vancouver Intl-STL Lambert-St Louis

11h 46m2 stops San Francisco Denver Intl

4:40 p.m. - 10:56 p.m.STL Lambert-St Louis-YVR Vancouver Intl

8h 16m1 stop Denver Intl

C$ 606United Airlines

Fri, 28 Aug - Mon, 31 Aug

10:55 a.m. - 8:46 p.m.YVR Vancouver Intl-STL Lambert-St Louis

7h 51m1 stop Denver Intl

4:40 p.m. - 10:56 p.m.STL Lambert-St Louis-YVR Vancouver Intl

8h 16m1 stop Denver Intl

C$ 606United Airlines

Fri, 28 Aug - Mon, 31 Aug

11:45 a.m. - 11:42 p.m.YVR Vancouver Intl-STL Lambert-St Louis

9h 57m1 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$ 614American Airlines

Wed, 26 Aug - Sun, 30 Aug

7:45 a.m. - 11:56 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

5h 11m1 stop Atlanta Hartsfield-Jackson

2:29 p.m. - 2:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

22h 36m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

C$ 740Multiple Airlines

Sat, 29 Aug - Fri, 11 Sep

7:24 p.m. - 11:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

5h 02m1 stop Minneapolis St Paul

2:29 p.m. - 2:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

22h 36m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

C$ 740Multiple Airlines

Sun, 30 Aug - Fri, 11 Sep

8:00 p.m. - 9:20 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

14h 20m2 stops Calgary Atlanta Hartsfield-Jackson

5:23 p.m. - 1:41 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

19h 18m1 stop Atlanta Hartsfield-Jackson

C$ 892WestJet

Fri, 28 Aug - Sat, 5 Sep

8:00 p.m. - 9:20 a.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

14h 20m2 stops Calgary Atlanta Hartsfield-Jackson

5:34 p.m. - 4:45 p.m.STL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

22h 11m2 stops Minneapolis St Paul Toronto Pearson Intl

C$ 893WestJet

Fri, 28 Aug - Sat, 5 Sep

2:35 p.m. - 6:42 p.m.YOW Ottawa-STL Lambert-St Louis

5h 07m1 stop Montreal Pierre Elliott Trudeau Intl

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

8h 16m1 stop Chicago O'Hare Intl

C$ 1,130Air Canada

Tue, 25 Aug - Fri, 4 Sep

7:20 a.m. - 12:54 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

6h 34m1 stop Chicago O'Hare Intl

2:55 p.m. - 11:00 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

7h 05m1 stop New York LaGuardia

C$ 1,155American Airlines

Wed, 26 Aug - Wed, 26 Aug

12:55 p.m. - 2:04 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 09mdirect

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

1h 54mdirect

C$ 1,177Air Canada

Sat, 29 Aug - Sun, 13 Sep

Recent direct flight deals from Canada to St. Louis

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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$ 691Air Canada

Sat, 19 Sep - Wed, 30 Sep

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

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

2h 00mdirect

C$ 693Air Canada

Sun, 8 Nov - Mon, 9 Nov

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$ 693Air Canada

Wed, 7 Oct - Fri, 9 Oct

7:15 p.m. - 8:20 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$ 693Air Canada

Tue, 20 Oct - Tue, 27 Oct

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$ 705Air Canada

Thu, 22 Oct - Mon, 26 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$ 707Air Canada

Tue, 13 Oct - Sun, 18 Oct

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

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

2h 00mdirect

C$ 915United Airlines

Mon, 23 Nov - Fri, 4 Dec

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$ 915United Airlines

Thu, 8 Oct - Thu, 15 Oct

4:55 p.m. - 6:42 p.m.YUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 47mdirect

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

2h 31mdirect

C$ 1,366Multiple Airlines

Fri, 4 Sep - Tue, 8 Sep

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$ 1,485Multiple Airlines

Thu, 8 Oct - Mon, 12 Oct

Fly from

Route

Depart

Return

Price

Cheapest round-trip

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Tue 15/9

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

2 stops15h 10m

Lambert-St Louis

Fri 18/9

2:29 p.m.-11:00 a.m.

1 stop21h 31m

C$ 409

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.-4:23 p.m.

1 stop11h 15m

C$ 420

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Tue 15/9

7:00 a.m.-1:10 p.m.

1 stop29h 10m

Lambert-St Louis

Fri 18/9

2:29 p.m.-11:00 a.m.

1 stop21h 31m

C$ 422

Quickest round-trip

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Sun 11/10

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

1 stop8h 20m

Lambert-St Louis

Sat 17/10

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

1 stop8h 04m

C$ 422

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 19/9

11:40 a.m.-12:27 a.m.

1 stop13h 47m

Lambert-St Louis

Wed 30/9

1:49 p.m.-11:26 p.m.

1 stop8h 37m

C$ 458

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 12/9

11:40 a.m.-12:27 a.m.

1 stop13h 47m

Lambert-St Louis

Sat 26/9

7:27 a.m.-5:44 p.m.

1 stop9h 17m

C$ 480

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Mon 23/11

6:30 a.m.-11:18 p.m.

1 stop17h 48m

Lambert-St Louis

Sat 5/12

11:44 a.m.-11:26 p.m.

1 stop10h 42m

C$ 485

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 29/9

7:24 p.m.-8:40 a.m.

1 stop14h 16m

Lambert-St Louis

Mon 5/10

6:15 a.m.-11:13 p.m.

1 stop15h 58m

C$ 485

HalifaxSt. Louis

YHZ Halifax Intl - STL Lambert-St Louis

YHZSTL

Halifax Intl

Wed 23/9

5:15 a.m.-2:00 p.m.

1 stop10h 45m

Lambert-St Louis

Wed 30/9

8:55 a.m.-5:14 p.m.

1 stop6h 19m

C$ 534

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Mon 19/10

11:10 p.m.-9:21 p.m.

2 stops20h 11m

Lambert-St Louis

Thu 22/10

12:10 p.m.-8:15 p.m.

1 stop10h 05m

C$ 618

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$ 841.

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$ 631. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 961 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$ 710 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$ 584 in January
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	April	56% more expensive	It costs about C$ 1,108 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	306% 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$ 241
Best Round-Trip Price	C$ 409
Fastest flight time	15h 15m
Popular in	August

The best one-way flight price to St. Louis from Canada in the last 5 days is C$ 241 (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$ 409 (Calgary to Lambert-St Louis).

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The fastest flight to St. Louis from Canada takes 15h 15m (Calgary 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 7 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$ 428

Montreal to Lambert-St Louis Flightsfrom C$ 528

Vancouver to Lambert-St Louis Flightsfrom C$ 335

Ottawa to Lambert-St Louis Flightsfrom C$ 561

Calgary to Lambert-St Louis Flightsfrom C$ 418

Québec City to Lambert-St Louis Flightsfrom C$ 569

Edmonton to Lambert-St Louis Flightsfrom C$ 497

Halifax Intl to Lambert-St Louis Flightsfrom C$ 404

Victoria Intl to Lambert-St Louis Flightsfrom C$ 518

Saskatoon to Lambert-St Louis Flightsfrom C$ 600

Charlottetown to Lambert-St Louis Flightsfrom C$ 768

C$ 241 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 6/10. 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

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Cheap St. Louis flight deals and tips

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Popular in

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An easier way to manage your Lambert-St Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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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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