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.

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 7h 23m 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$ 182 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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7:15 a.m. - 11:33 p.m.YYZ-STL

17h 18m2 stops

4:45 p.m. - 2:20 p.m.STL-YYZ

20h 35m1 stop

C$ 306Multiple Airlines

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Wed, 21 Jan - Wed, 28 Jan

7:15 a.m. - 11:33 p.m.YYZ-STL

17h 18m1 stop

4:45 p.m. - 2:20 p.m.STL-YYZ

20h 35m1 stop

C$ 308Multiple Airlines

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Wed, 21 Jan - Wed, 28 Jan

2:58 p.m. - 10:59 p.m.YHZ-STL

10h 01m2 stops

7:00 a.m. - 2:14 p.m.STL-YHZ

5h 14m1 stop

C$ 382United Airlines

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Mon, 23 Feb - Wed, 25 Feb

8:30 a.m. - 8:58 p.m.YVR-STL

10h 28m1 stop

8:45 a.m. - 6:03 p.m.STL-YVR

11h 18m1 stop

C$ 385United Airlines

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Mon, 26 Jan - Wed, 28 Jan

6:20 a.m. - 9:38 p.m.YVR-STL

13h 18m2 stops

6:40 a.m. - 12:15 p.m.STL-YVR

7h 35m1 stop

C$ 425Delta

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Mon, 26 Jan - Wed, 28 Jan

8:45 a.m. - 8:58 p.m.YVR-STL

10h 13m1 stop

9:57 a.m. - 10:20 p.m.STL-YVR

14h 23m2 stops

C$ 468Air Canada

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Mon, 26 Jan - Wed, 28 Jan

9:00 a.m. - 3:29 p.m.YHZ-STL

8h 29m1 stop

4:05 p.m. - 12:41 a.m.STL-YHZ

6h 36m1 stop

C$ 580Air Canada

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Tue, 3 Mar - Thu, 5 Mar

6:00 a.m. - 5:01 p.m.YHZ-STL

37h 01m2 stops

6:25 a.m. - 1:41 a.m.STL-YHZ

41h 16m2 stops

C$ 622WestJet

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Thu, 1 Jan - Mon, 5 Jan

7:00 a.m. - 10:41 a.m.YXE-STL

27h 41m2 stops

6:10 a.m. - 2:38 p.m.STL-YXE

8h 28m1 stop

C$ 790Delta

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Fri, 9 Jan - Tue, 13 Jan

7:00 a.m. - 8:52 a.m.YXE-STL

25h 52m2 stops

6:10 a.m. - 12:44 a.m.STL-YXE

18h 34m2 stops

C$ 808WestJet

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Fri, 9 Jan - Tue, 13 Jan

Fly from

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 21/1

7:15 a.m.-11:33 p.m.

2 stops17h 18m

Lambert-St Louis

Wed 28/1

4:45 p.m.-2:20 p.m.

1 stop20h 35m

C$ 306

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 21/1

7:15 a.m.-11:33 p.m.

1 stop17h 18m

Lambert-St Louis

Wed 28/1

4:45 p.m.-2:20 p.m.

1 stop20h 35m

C$ 308

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Mon 23/2

2:58 p.m.-10:59 p.m.

2 stops10h 01m

Lambert-St Louis

Wed 25/2

7:00 a.m.-2:14 p.m.

1 stop5h 14m

C$ 382

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Mon 26/1

8:30 a.m.-8:58 p.m.

1 stop10h 28m

Lambert-St Louis

Wed 28/1

8:45 a.m.-6:03 p.m.

1 stop11h 18m

C$ 385

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Mon 26/1

6:20 a.m.-9:38 p.m.

2 stops13h 18m

Lambert-St Louis

Wed 28/1

6:40 a.m.-12:15 p.m.

1 stop7h 35m

C$ 425

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Mon 26/1

8:45 a.m.-8:58 p.m.

1 stop10h 13m

Lambert-St Louis

Wed 28/1

9:57 a.m.-10:20 p.m.

2 stops14h 23m

C$ 468

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 3/3

9:00 a.m.-3:29 p.m.

1 stop8h 29m

Lambert-St Louis

Thu 5/3

4:05 p.m.-12:41 a.m.

1 stop6h 36m

C$ 580

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Thu 1/1

6:00 a.m.-5:01 p.m.

2 stops37h 01m

Lambert-St Louis

Mon 5/1

6:25 a.m.-1:41 a.m.

2 stops41h 16m

C$ 622

SaskatoonSt. Louis

YXE - STL

YXESTL

Saskatoon

Fri 9/1

7:00 a.m.-10:41 a.m.

2 stops27h 41m

Lambert-St Louis

Tue 13/1

6:10 a.m.-2:38 p.m.

1 stop8h 28m

C$ 790

SaskatoonSt. Louis

YXE - STL

YXESTL

Saskatoon

Fri 9/1

7:00 a.m.-8:52 a.m.

2 stops25h 52m

Lambert-St Louis

Tue 13/1

6:10 a.m.-12:44 a.m.

2 stops18h 34m

C$ 808

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$ 525. 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$ 560.

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$ 575. The most expensive day to fly to St. Louis is Sunday, with ticket prices averaging around C$ 787.

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$ 552. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 692 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$ 508 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$ 559 in June
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORT	November	26% more expensive	It costs about C$ 872 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$ 182
Best Round-Trip Price	C$ 306
Fastest flight time	7h 39m
Popular in	June

The best one-way flight price to St. Louis from Canada in the last 72 hours is C$ 182 (Calgary 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$ 306 (Toronto Pearson Intl to Lambert-St Louis).

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The fastest flight to St. Louis from Canada takes 7h 39m (Québec City 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

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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.

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