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C$ 149+ Cheap flights from St. Louis

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — YYZ
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

What to know about flights from St. Louis

Discover essential information about flights departing from St. Louis, including flight schedules, destinations, airlines operating at the St. Louis airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 12 December 2025.

Good round-trip deal

C$ 518 or less

Good one-way deal

C$ 203 or less
Price to beat on a round-trip flight from Lambert-St Louis.
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Price to beat on a one-way flight from Lambert-St Louis.
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Find flights from St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis
Explore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 12 December 2025.

Thu 8/13:43 p.m.STL - YYZ
2 stops19h 00mMultiple Airlines
Thu 15/17:10 a.m.YYZ - STL
1 stop16h 24mMultiple Airlines
Deal found 11/12C$ 356
Mon 12/11:07 p.m.STL - YYZ
1 stop16h 13mMultiple Airlines
Tue 13/13:40 p.m.YYZ - STL
2 stops16h 11mMultiple Airlines
Deal found 10/12C$ 379
Mon 26/18:22 p.m.STL - YVR
2 stops20h 23mMultiple Airlines
Sun 1/23:40 p.m.YVR - STL
1 stop27h 10mMultiple Airlines
Deal found 11/12C$ 383
Sun 25/15:42 p.m.STL - YYZ
2 stops25h 29mMultiple Airlines
Sun 1/28:00 p.m.YYZ - STL
1 stop25h 50mMultiple Airlines
Deal found 10/12C$ 385
Sun 18/110:09 p.m.STL - YYZ
1 stop31h 11mMultiple Airlines
Wed 21/17:15 a.m.YYZ - STL
1 stop17h 18mMultiple Airlines
Deal found 9/12C$ 390
Tue 13/15:11 p.m.STL - YYZ
1 stop30h 00mMultiple Airlines
Mon 26/110:15 a.m.YYZ - STL
2 stops45h 36mMultiple Airlines
Deal found 9/12C$ 405
Sun 25/19:27 p.m.STL - YYC
1 stop26h 38mMultiple Airlines
Sat 31/112:30 a.m.YYC - STL
1 stop29h 21mMultiple Airlines
Deal found 11/12C$ 407
Sat 7/26:19 p.m.STL - YVR
1 stop7h 51mMultiple Airlines
Mon 16/27:45 p.m.YVR - STL
2 stops33h 06mMultiple Airlines
Deal found 11/12C$ 423
Fri 23/18:22 p.m.STL - YVR
1 stop16h 50mMultiple Airlines
Fri 30/18:00 a.m.YVR - STL
2 stops28h 46mMultiple Airlines
Deal found 10/12C$ 432
Fri 23/15:42 p.m.STL - YYZ
1 stop19h 38mMultiple Airlines
Fri 30/17:15 a.m.YYZ - STL
2 stops17h 18mMultiple Airlines
Deal found 9/12C$ 434
Mon 12/11:07 p.m.STL - YYC
1 stop23h 54mMultiple Airlines
Fri 16/17:30 a.m.YYC - STL
2 stops22h 21mMultiple Airlines
Deal found 11/12C$ 444
Sat 17/14:05 p.m.STL - YHZ
1 stop6h 36mAir Canada
Wed 21/19:00 a.m.YHZ - STL
1 stop8h 29mAir Canada
Deal found 11/12C$ 458

Find flights from St. Louis within your budget

 
Find flights departing from St. Louis that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 12 December 2025. In the last 7 days, Cheapflights users made a total of 629,999 searches

Fly to

Pearson Intl

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 25/1

5:42 p.m.-8:11 p.m.

2 stops25h 29m

Toronto Pearson Intl

Sun 1/2

8:00 p.m.-8:50 p.m.

1 stop25h 50m

C$ 385

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 25/1

9:27 p.m.-11:05 p.m.

1 stop26h 38m

Calgary

Sat 31/1

12:30 a.m.-6:51 a.m.

1 stop29h 21m

C$ 407

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Fri 23/1

8:22 p.m.-11:12 a.m.

1 stop16h 50m

Vancouver Intl

Fri 30/1

8:00 a.m.-2:46 p.m.

2 stops28h 46m

C$ 432

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Sat 17/1

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

1 stop6h 36m

Halifax Intl

Wed 21/1

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

1 stop8h 29m

C$ 458

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Tue 9/6

12:00 p.m.-11:27 p.m.

1 stop9h 27m

Halifax Intl

Wed 17/6

6:40 a.m.-11:54 a.m.

1 stop7h 14m

C$ 459

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Sat 10/1

7:00 a.m.-6:44 p.m.

2 stops13h 44m

Vancouver Intl

Sat 17/1

7:25 a.m.-9:35 p.m.

2 stops12h 10m

C$ 474

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 22/1

6:44 p.m.-12:48 p.m.

1 stop19h 04m

Calgary

Sun 25/1

1:40 p.m.-10:20 a.m.

1 stop19h 40m

C$ 479

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 12/1

6:44 p.m.-12:48 p.m.

1 stop19h 04m

Calgary

Fri 16/1

1:40 p.m.-1:09 p.m.

1 stop22h 29m

C$ 479

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Sat 17/1

4:49 p.m.-2:31 p.m.

2 stops19h 42m

Halifax Intl

Wed 21/1

3:15 p.m.-10:58 p.m.

2 stops9h 43m

C$ 480

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 14/2

6:35 p.m.-10:56 a.m.

1 stop15h 21m

Toronto Pearson Intl

Sat 21/2

6:00 a.m.-2:45 p.m.

1 stop9h 45m

C$ 484

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis

Have a flexible travel schedule? Discover the best time to fly from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis

Get recent, data-driven insights about flights from St. Louis including ideal travel times, pricing trends, and more.

When is the best time to book a flight from St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Pearson Intl. Price data was last updated on 5 December 2025.

The price you pay for your flight from St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 12 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, June is the cheapest month in which you can book a flight from St. Louis (average of C$ 247). Flying from St. Louis in October will prove the most costly (average of C$ 712). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from St. Louis?

For flights departing from St. Louis check dates and pricing for the following: Air Canada. This airline departs to the following popular destinations: Toronto.

Air Canada
Air Canada
From C$ 301

What are popular destinations to fly to from St. Louis?

From St. Louis you can expect to find greater availability for the following destinations: Chicago (814 flights per day), New York (213 flights per day) and Dallas (211 flights per day).

Chicago
Chicago
From C$ 661
Denver Intl
Denver Intl
From C$ 203
Washington, D.C.
Washington, D.C.
From C$ 813
Los Angeles
Los Angeles
From C$ 518

What is the cheapest place to fly to from St. Louis?

The cheapest city to fly to from St. Louis is Denver Intl, with prices starting at C$ 203. Explore other affordable destinations below.

Denver Intl
Denver Intl
From C$ 203
Los Angeles
Los Angeles
From C$ 518
Chicago
Chicago
From C$ 661
Washington, D.C.
Washington, D.C.
From C$ 813

Airline reviews for flights from St. Louis

Get insights into the airlines that provide service from St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from St. Louis. In the last 7 days, Cheapflights users made a total of 629,999 searches.
Read through reviews of airlines serving St. Louis, such as Air Canada. 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.
Air Canada
7.1
Good
10,516 reviews
Check prices

Food

6.3

Boarding

7.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,516 reviews
Air Canada
7.1
Good
10,516 reviews
Check prices

Food

6.3

Boarding

7.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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Airports servicing St. Louis

Fly out of one of these airports located in St. Louis.
Flights from Kansas City
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Flights from Springfield

Related info for your journey

Access useful and relevant information related to your journey from St. Louis. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 12 December 2025.

  • What are the most popular destinations to fly to from St. Louis?

    This month, the top selected destinations from St. Louis are Cancún, Denver, Atlanta. Throughout the year, Denver, Cancún, Atlanta are some of the top choices made by users flying from St. Louis.

  • What is the cheapest flight from St. Louis to anywhere?

    Users have flown out of St. Louis for as low as C$ 203 to Denver (prices may vary depending on the airline and departure time). On average, users have booked flights for C$ 713 to fly from St. Louis.

  • What is the cheapest premium economy flight from St. Louis?

    Options for some of the cheapest premium economy flights from St. Louis we have found on Cheapflights are as follows:
    Fly from Lambert-St Louis to Chicago O'Hare Intl Airport starting at C$ 1,455
    Fly from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl Airport starting at C$ 2,735
    Fly from Lambert-St Louis to Toronto Pearson Intl Airport starting at C$ 5,465

  • What is the cheapest month to fly from St. Louis?

    At the present moment the cheapest month to fly from St. Louis is currently June; with October being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • How does Cheapflights help users find flights from St. Louis?

    When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

  • Why should you use Cheapflights to find cheap flight tickets from St. Louis?

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from St. Louis with no change fees?

    Certainly. Search results for flights from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

  • Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

    Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from St. Louis today and book when you’re ready!

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How does Cheapflights help users find flights from St. Louis?

When you search for this flight from St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis with no change fees?

Certainly. Search results for flights from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from St. Louis today and book when you’re ready!

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