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.

American Airlines Flights to St. Louis

There are 23 American Airlines flights to St. Louis in a normal week. The most common departure point is Charlotte Douglas and the best American Airlines ticket price seen on momondo is C$ 436 (last 72 hours, from Toronto Pearson Intl, to St. Louis). American Airlines has a score of 7.2 from 11,051 user reviews on momondo.

WestJet Flights to St. Louis

WestJet flights to St. Louis can start from as low as C$ 483 (round-trip, from Edmonton, found in the last 72 hours). Over 28 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 3,161 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 06m on average. On the other hand, flying from Vancouver Intl to Lambert-St Louis takes 6h 36m 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$ 196 Cheap Flights to St. Louis in 2025/26

1 adult

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Find the cheapest flights from Canada to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

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11:00 p.m. - 11:07 a.m.YVR-STL

10h 07m1 stop

10:42 a.m. - 11:12 a.m.STL-YVR

26h 30m1 stop

C$ 322Multiple Airlines

Find Deal

Wed, 3 Dec - Sun, 14 Dec

5:15 p.m. - 8:40 a.m.YYZ-STL

16h 25m1 stop

10:06 a.m. - 2:20 p.m.STL-YYZ

27h 14m1 stop

C$ 361Multiple Airlines

Find Deal

Sat, 10 Jan - Sun, 18 Jan

2:50 p.m. - 7:48 p.m.YHZ-STL

6h 58m1 stop

6:30 a.m. - 1:54 p.m.STL-YHZ

5h 24m1 stop

C$ 392United Airlines

Find Deal

Tue, 7 Apr - Wed, 8 Apr

8:30 a.m. - 8:26 p.m.YVR-STL

9h 56m1 stop

6:00 p.m. - 11:06 p.m.STL-YVR

7h 06m1 stop

C$ 395United Airlines

Find Deal

Tue, 3 Mar - Wed, 4 Mar

5:35 a.m. - 9:03 p.m.YHZ-STL

17h 28m2 stops

7:45 a.m. - 12:05 a.m.STL-YHZ

14h 20m2 stops

C$ 465Air Canada

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Tue, 7 Apr - Wed, 8 Apr

10:35 a.m. - 9:47 p.m.YOW-STL

12h 12m1 stop

7:45 a.m. - 10:16 p.m.STL-YOW

13h 31m2 stops

C$ 495Air Canada

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Tue, 7 Apr - Wed, 8 Apr

7:25 a.m. - 6:57 p.m.YVR-STL

9h 32m2 stops

6:00 a.m. - 11:03 a.m.STL-YVR

7h 03m1 stop

C$ 500Delta

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Tue, 25 Nov - Tue, 2 Dec

6:00 a.m. - 11:40 p.m.YEG-STL

16h 40m2 stops

10:00 a.m. - 12:13 p.m.STL-YEG

27h 13m1 stop

C$ 728WestJet

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Tue, 7 Apr - Wed, 8 Apr

12:05 a.m. - 11:50 a.m.YEG-STL

10h 45m2 stops

6:30 a.m. - 3:09 p.m.STL-YEG

9h 39m2 stops

C$ 737WestJet

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Mon, 6 Apr - Wed, 8 Apr

12:30 a.m. - 12:54 p.m.YYC-STL

11h 24m1 stop

1:30 p.m. - 8:00 p.m.STL-YYC

7h 30m1 stop

C$ 758Delta

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Mon, 4 May - Wed, 6 May

Fly from

Route

Depart

Return

Price

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Wed 3/12

11:00 p.m.-11:07 a.m.

1 stop10h 07m

Lambert-St Louis

Sun 14/12

10:42 a.m.-11:12 a.m.

1 stop26h 30m

C$ 322

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/1

5:15 p.m.-8:40 a.m.

1 stop16h 25m

Lambert-St Louis

Sun 18/1

10:06 a.m.-2:20 p.m.

1 stop27h 14m

C$ 361

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 7/4

2:50 p.m.-7:48 p.m.

1 stop6h 58m

Lambert-St Louis

Wed 8/4

6:30 a.m.-1:54 p.m.

1 stop5h 24m

C$ 392

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Tue 3/3

8:30 a.m.-8:26 p.m.

1 stop9h 56m

Lambert-St Louis

Wed 4/3

6:00 p.m.-11:06 p.m.

1 stop7h 06m

C$ 395

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 7/4

5:35 a.m.-9:03 p.m.

2 stops17h 28m

Lambert-St Louis

Wed 8/4

7:45 a.m.-12:05 a.m.

2 stops14h 20m

C$ 465

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 7/4

10:35 a.m.-9:47 p.m.

1 stop12h 12m

Lambert-St Louis

Wed 8/4

7:45 a.m.-10:16 p.m.

2 stops13h 31m

C$ 495

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Tue 25/11

7:25 a.m.-6:57 p.m.

2 stops9h 32m

Lambert-St Louis

Tue 2/12

6:00 a.m.-11:03 a.m.

1 stop7h 03m

C$ 500

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Tue 7/4

6:00 a.m.-11:40 p.m.

2 stops16h 40m

Lambert-St Louis

Wed 8/4

10:00 a.m.-12:13 p.m.

1 stop27h 13m

C$ 728

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Mon 6/4

12:05 a.m.-11:50 a.m.

2 stops10h 45m

Lambert-St Louis

Wed 8/4

6:30 a.m.-3:09 p.m.

2 stops9h 39m

C$ 737

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 4/5

12:30 a.m.-12:54 p.m.

1 stop11h 24m

Lambert-St Louis

Wed 6/5

1:30 p.m.-8:00 p.m.

1 stop7h 30m

C$ 758

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 June is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 521. If you don’t want to visit St. Louis in June, then you should wait until August to fly from Canada, when ticket prices are also cheap, with an average price of C$ 556.

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 Thursday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 585. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 771.

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$ 549. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 698 on average. Flights to St. Louis from Canada at noon 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$ 691 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$ 504 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	June	20% cheaper	Flying from Toronto Pearson Intl Airport to St. Louis costs on average just C$ 555 in June
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	November	25% more expensive	It costs about C$ 866 for flights to St. Louis from Toronto Pearson Intl Airport in November
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	May	426% more users visited	More momondo users searched in flights to St. Louis from Toronto Pearson Intl Airport in May 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$ 196
Best Round-Trip Price	C$ 322
Fastest flight time	2h 29m
Popular in	June

The best one-way flight price to St. Louis from Canada in the last 72 hours is C$ 196 (Toronto Pearson Intl to Lambert-St Louis).

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The best round-trip flight price to St. Louis from Canada in the last 72 hours is C$ 322 (Vancouver Intl to Lambert-St Louis).

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The fastest flight to St. Louis from Canada takes 2h 29m (Toronto Pearson Intl to Lambert-St Louis).

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June has the highest demand for flights to St. Louis, with a 2% 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 November 2025, 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.

Chesterfield

Litchfield

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?

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