Find flights
Deals
Airlines

C$ 170+ Cheap flights from St. Louis

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. 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
30 Mar — 6 Apr1
1 adult

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 25 March 2025.

Cheapest airline

Air Canada

Good round-trip deal

C$ 206 or less

Good one-way deal

C$ 239 or less
On average, Air Canada currently has the cheapest one-way flight from Lambert-St Louis (avg. price of C$ 804).
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis.
Search Deals

Find flights from St. Louis

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 25 March 2025.

Thu 10/46:10 p.m.STL - YYZ
1 stop28h 45mMultiple Airlines
Sun 13/47:05 a.m.YYZ - STL
1 stop11h 10mMultiple Airlines
Deal found 24/3C$ 371
Fri 16/512:15 p.m.STL - YYC
2 stops9h 04mMultiple Airlines
Fri 23/54:20 p.m.YYC - STL
1 stop15h 49mMultiple Airlines
Deal found 24/3C$ 503
Thu 8/51:30 p.m.STL - YYC
1 stop9h 00mAir Canada
Thu 15/51:30 p.m.YYC - STL
1 stop6h 31mAir Canada
Deal found 24/3C$ 504
Thu 8/52:29 p.m.STL - YYC
1 stop9h 32mDelta
Thu 15/52:00 p.m.YYC - STL
1 stop9h 59mDelta
Deal found 23/3C$ 506
Tue 22/46:10 p.m.STL - YUL
2 stops23h 50mMultiple Airlines
Tue 29/46:45 a.m.YUL - STL
2 stops11h 30mMultiple Airlines
Deal found 23/3C$ 529
Sun 25/55:19 a.m.STL - YYC
1 stop17h 31mAmerican Airlines
Sat 31/512:45 p.m.YYC - STL
1 stop20h 11mAmerican Airlines
Deal found 23/3C$ 537
Mon 21/45:26 a.m.STL - YVR
1 stop7h 19mAmerican Airlines
Mon 28/46:00 a.m.YVR - STL
1 stop14h 28mAmerican Airlines
Deal found 24/3C$ 550
Sun 4/58:00 a.m.STL - YVR
2 stops30h 45mMultiple Airlines
Sat 10/53:55 p.m.YVR - STL
2 stops15h 20mMultiple Airlines
Deal found 23/3C$ 554
Wed 28/57:30 a.m.STL - YHZ
1 stop6h 39mAir Canada
Sun 8/67:00 a.m.YHZ - STL
1 stop7h 36mAir Canada
Deal found 24/3C$ 562
Mon 21/45:54 p.m.STL - YVR
1 stop19h 01mUnited Airlines
Mon 28/48:55 p.m.YVR - STL
2 stops17h 41mUnited Airlines
Deal found 24/3C$ 564
Sun 1/67:30 a.m.STL - YHZ
1 stop7h 39mMultiple Airlines
Fri 6/65:45 a.m.YHZ - STL
2 stops8h 51mMultiple Airlines
Deal found 23/3C$ 569
Sun 17/88:55 a.m.STL - YVR
1 stop13h 28mWestJet
Wed 27/811:00 p.m.YVR - STL
1 stop11h 24mWestJet
Deal found 24/3C$ 579

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 25 March 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

Thu 10/4

6:10 p.m.-11:55 p.m.

1 stop28h 45m

Toronto Pearson Intl

Sun 13/4

7:05 a.m.-5:15 p.m.

1 stop11h 10m

C$ 371

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 16/5

12:15 p.m.-8:19 p.m.

2 stops9h 04m

Calgary

Fri 23/5

4:20 p.m.-9:09 a.m.

1 stop15h 49m

C$ 503

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 8/5

1:30 p.m.-9:30 p.m.

1 stop9h 00m

Calgary

Thu 15/5

1:30 p.m.-9:01 p.m.

1 stop6h 31m

C$ 504

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 8/5

2:29 p.m.-11:01 p.m.

1 stop9h 32m

Calgary

Thu 15/5

2:00 p.m.-12:59 a.m.

1 stop9h 59m

C$ 506

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 22/4

6:10 p.m.-7:00 p.m.

2 stops23h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 29/4

6:45 a.m.-5:15 p.m.

2 stops11h 30m

C$ 529

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 25/5

5:19 a.m.-9:50 p.m.

1 stop17h 31m

Calgary

Sat 31/5

12:45 p.m.-9:56 a.m.

1 stop20h 11m

C$ 537

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Mon 21/4

5:26 a.m.-10:45 a.m.

1 stop7h 19m

Vancouver Intl

Mon 28/4

6:00 a.m.-10:28 p.m.

1 stop14h 28m

C$ 550

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Sun 4/5

8:00 a.m.-12:45 p.m.

2 stops30h 45m

Vancouver Intl

Sat 10/5

3:55 p.m.-9:15 a.m.

2 stops15h 20m

C$ 554

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Wed 28/5

7:30 a.m.-4:09 p.m.

1 stop6h 39m

Halifax Intl

Sun 8/6

7:00 a.m.-12:36 p.m.

1 stop7h 36m

C$ 562

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Mon 21/4

5:54 p.m.-10:55 a.m.

1 stop19h 01m

Vancouver Intl

Mon 28/4

8:55 p.m.-4:36 p.m.

2 stops17h 41m

C$ 564

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 60 results
1
2
3
...
6

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 21 March 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 53 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, August is the cheapest month in which you can book a flight from St. Louis (average of C$ 282). Flying from St. Louis in February will prove the most costly (average of C$ 521). 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$ 189

Delta

Delta

From C$ 534

Frontier

Frontier

From C$ 105

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 (773 flights per day), Detroit (238 flights per day) and New York (223 flights per day).

Toronto

Toronto

From C$ 139

New York

New York

From C$ 240

Denver Intl

Denver Intl

From C$ 141

Frankfurt am Main

Frankfurt am Main

From C$ 651

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

The cheapest city to fly to from St. Louis is Toronto, with prices starting at C$ 199. Explore other affordable destinations below.

Toronto

Toronto

From C$ 139

Denver Intl

Denver Intl

From C$ 141

New York

New York

From C$ 240

Chicago

Chicago

From C$ 281

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.
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,785 reviews
Alaska Airlines
8.0
Very good
9,782 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Airports servicing St. Louis

Fly out of one of these airports located in St. Louis.
Flights from Kansas City
Flights from Joplin
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 25 March 2025.

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

    This month, the top selected destinations from St. Louis are Cancún, Atlanta, Boston. Throughout the year, Cancún, Boston, 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$ 199 to Toronto Pearson Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for C$ 813 to fly from St. Louis.

  • What are the cheapest airlines flying from St. Louis to anywhere?

    According to our data, users have found Frontier, Air Canada, and Delta to have the cheapest round-trip prices from St. Louis. Some of the destinations and prices are as follows: Frontier flights from St. Louis to Las Vegas Harry Reid Intl (C$ 151). Air Canada flights from St. Louis to Toronto (C$ 271). Delta flights from St. Louis to Regina (C$ 764).

  • 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 Montreal Pierre Elliott Trudeau Intl Airport starting at C$ 2,841

  • What is the cheapest first class flight from St. Louis?

    If you’re looking to fly first-class from St. Louis to anywhere, put Denver on your list as prices start at C$ 1,483 for this destination.

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

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

  • Where are the cheapest places to fly to from St. Louis?

    Check out the cheapest flights from St. Louis to embark to:
    Travel from St. Louis to Toronto from C$ 371 round trip

  • 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!

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.