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St. Louis

$172+ Cheap flights from Canada to St. Louis (STL)

YYZ — STL
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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Cheap flight deals from Canada to St. Louis

Cheapest flights from Canada to St. Louis

Mon 12/72:25 pm -
2 stops45h 52m
Wed 12/166:20 pm -
1 stop18h 20m
Deal found 11/6$341
Mon 11/232:50 pm -
1 stop17h 05m
Thu 11/268:00 am -
1 stop15h 19m
Deal found 11/7$349
Tue 12/89:35 am -
2 stops26h 42m
Wed 12/166:20 pm -
1 stop18h 20m
Deal found 11/6$351
Mon 12/72:25 pm -
2 stops45h 52m
Tue 12/156:20 pm -
1 stop18h 20m
Deal found 11/6$360
Thu 12/37:35 am -
2 stops28h 42m
Wed 12/166:20 pm -
1 stop18h 20m
Deal found 11/6$370
Wed 12/910:40 am -
2 stops49h 37m
Tue 12/156:20 pm -
1 stop18h 20m
Deal found 11/6$371
Sat 12/56:30 am -
1 stop18h 42m
Wed 12/166:20 pm -
1 stop18h 20m
Deal found 11/6$421
Fri 12/46:30 am -
1 stop18h 42m
Fri 12/116:20 pm -
1 stop18h 20m
Deal found 11/6$423
Tue 12/112:20 pm -
2 stops23h 50m
Tue 12/86:20 pm -
1 stop20h 04m
Deal found 11/6$433
Tue 12/13:15 pm -
1 stop9h 46m
Tue 12/811:37 am -
1 stop11h 04m
Deal found 11/6$434
Thu 12/101:25 am -
1 stop9h 52m
Sat 12/197:03 pm -
2 stops28h 37m
Deal found 11/8$448
Tue 12/81:25 am -
1 stop9h 52m
Sat 12/197:03 pm -
2 stops28h 37m
Deal found 11/8$449

Find flight deals from Canada to St. Louis

Round-trip from

$341
(Kiwi.com)

One-way from

$172
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$649

Good round-trip deal

$640 or less

Good one-way deal

$444 or less
From Canada to Lambert-St Louis
Search Deals
One-way flight from Canada to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
Search Deals
Price to beat on a round-trip flight from Canada to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Canada to Lambert-St Louis.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Canada to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 12/1

12:20 pm-11:10 am

2 stops23h 50m

Lambert-St Louis

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$172

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Fri 1/22

2:50 pm-11:20 pm

1 stop7h 30m

Lambert-St Louis

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$199

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Sun 1/24

2:50 pm-11:20 pm

1 stop7h 30m

Lambert-St Louis

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$199

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Mon 11/30

8:00 pm-11:10 am

3 stops39h 10m

Lambert-St Louis

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$201

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sun 11/22

1:00 pm-1:31 pm

2 stops25h 31m

Lambert-St Louis

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$232

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Wed 12/23

2:15 pm-12:46 am

1 stop9h 31m

Lambert-St Louis

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$236

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Wed 12/2

3:22 pm-12:02 am

1 stop9h 40m

Lambert-St Louis

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$243

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Sun 1/24

8:50 am-10:20 am

2 stops24h 30m

Lambert-St Louis

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$243

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Sat 5/8

7:30 am-6:21 pm

1 stop8h 51m

Lambert-St Louis

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$248

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 12/1

11:45 am-7:50 pm

1 stop9h 05m

Lambert-St Louis

Wed 12/31

12:00 am-1:00 am

Nonstop0h 00m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 59 resultsSorted by cheapest first
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3
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6

Best time to book a flight from Canada to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Canada with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Canada to St. Louis

What is the cheapest month to book a flight from Canada to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Canada to St. Louis (average of $421). Flying from Canada to St. Louis in November is currently the most expensive (average of $610). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CA to STL?

When flying from Canada to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 19% versus a flight in the afternoon.

How far ahead should I book a flight from Canada to St. Louis?

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Canada to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Alaska Airlines,United Airlines, andWestJet from Canada to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,158 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.3
Good
10,479 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
WestJet
7.2
Good
3,435 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Air Canada
7.1
Good
11,880 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
American Airlines
7.0
Good
12,227 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Overall

7.9

Food

7.0

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • What airport do you fly into for flights to St. Louis from Canada?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Canada. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from Canada to St. Louis?

    There are many flights that can get you from Canada to St. Louis in 10h 11m. Fly via United Airlines, American Airlines, or Air Canada to get the fastest option. The distance from Canada to St. Louis is about 1438 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Canada to St. Louis one-way?

    One-way options have recently been found by users for as low as $152 on United Airlines. Other airlines that offer cheap prices include Delta from $162 and Air Canada from $178 one-way.

  • What are the most popular routes from Canada to St. Louis?

    Most travelers choose Toronto Pearson Intl - Lambert-St Louis, Calgary - Lambert-St Louis or Vancouver Intl - Lambert-St Louis when deciding on the best route from Canada to St. Louis.

  • What are the most reliable airlines from Canada to St. Louis?

    Consider Air Canada (72%), Jazz (72%) or United Airlines (72%) when booking your flight. These represent the most reliable airlines when flying from Canada to St. Louis.

  • What are the cheapest flights from Canada to St. Louis?

    Looking at all options, your cheapest flight can be booked for $399. While the most popular route (Toronto Pearson Intl - Lambert-St Louis) can be booked for $459 on average, our data indicates $650 when flying from Canada to St. Louis.

  • Can I find deals for flights from Canada to St. Louis that include hotel bookings?

    Yes. In addition to deals on Canada to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Canada to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Canada to St. Louis.

  • Can I find deals for business class flights from Canada to St. Louis?

    Yes. Cheapflights offers flight deals from Canada to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Canada to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Canada to St. Louis (average of $421). Flying from Canada to St. Louis in November is currently the most expensive (average of $610). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Fairview Heights
O'Fallon
Fenton
Eureka
Wentzville
Maryland Heights
Chesterfield
Swansea
Edwardsville
Glencoe

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Canada to St. Louis

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$172Average$456FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$256Average$483FlexibilityNo cancel feeOn-time67%
WestJetCheapest$292Average$475FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$410Average$632FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$440Average$577FlexibilityNo cancel feeOn-time71%

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