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C$ 395+ Direct flights to St. Louis

This is the cheapest price on a non-stop flight to St. Louis found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
20 Dec — 27 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 20 November 2025.

Thu 8/12:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Sun 11/14:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 18/11C$ 495
Thu 22/12:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Mon 26/14:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 18/11C$ 541
Thu 8/12:00 p.m.YYZ - STL
Nonstop2h 29mUnited Airlines
Sun 11/14:05 p.m.STL - YYZ
Nonstop2h 01mUnited Airlines
Deal found 18/11C$ 615
Sun 22/32:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Sun 29/34:05 p.m.STL - YYZ
Nonstop1h 57mAir Canada
Deal found 19/11C$ 690
Sun 4/12:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Sun 11/14:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 20/11C$ 760
Fri 5/122:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Mon 8/124:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 19/11C$ 761
Fri 2/12:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Fri 9/14:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 18/11C$ 772
Fri 26/122:00 p.m.YYZ - STL
Nonstop2h 29mAir Canada
Thu 8/14:05 p.m.STL - YYZ
Nonstop2h 01mAir Canada
Deal found 20/11C$ 803

Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to 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.

Cheapflights Fare Finder

 
Use the slider to find non-stop flights to St. Louis within your budget. Price data is based on user searches made on Cheapflights. Over the past seven days, Cheapflights users made 629,999 searches and data was last updated on 20 November 2025.
Use the filters below to find and compare direct flights to St. Louis that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/1

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 11/1

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 495

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 27/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Fri 6/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 517

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Mon 9/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sun 8/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 27/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Tue 3/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 25/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Tue 3/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 25/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Fri 6/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sat 7/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Wed 4/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 27/2

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Sat 7/3

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 519

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/11

Showing 1-10 of 17 results
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2

Reviews of airlines flying non-stop to St. Louis

Get insights into the airlines that provide direct flights to 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 an airline for your flight to St. Louis. Reviews last updated 20 November 2025.
Read through reviews of airlines serving the United States, such as United Airlines and 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.
United Airlines
7.4
Good
9,028 reviews
Check prices

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,028 reviews
United Airlines
7.4
Good
9,028 reviews
Check prices

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Air Canada
7.1
Good
10,463 reviews
United Airlines
7.4
Good
9,028 reviews
Check prices

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

0 - 27 °C

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

FAQ about direct flights to St. Louis

Find answers to frequently asked questions about direct flights to St. Louis to unlock the best deals on Cheapflights.

  • How much are direct flights to St. Louis?

    On average, a one-way direct flight to St. Louis will cost users approximately C$ 503. If you're looking for a direct round-trip flight to St. Louis, you can expect to pay around C$ 667.

  • Which airlines fly direct to St. Louis?

    At the moment, Air Canada, United Airlines, WestJet, Delta, American Airlines offer direct flights to St. Louis. Air Canada is currently the most popular airline that flies direct to St. Louis.

  • How long is a direct flight to St. Louis?

    While the flight duration depends heavily on the origin, travellers can expect non-stop flights to St. Louis to last approximately 2h 42m on average. The quickest direct flight to St. Louis at this time departs from Toronto Pearson Intl Airport (2h 29m), while the longest leaves from Montreal Pierre Elliott Trudeau Intl Airport (2h 55m).

  • What is the best time of year to fly direct to St. Louis?

    If you're seeking the lowest price on a direct flight to St. Louis, May is worth consideration, as prices are usually at their lowest, on average. September may be most appealing to users looking for the quietest time to visit St. Louis, when demand is typically at its lowest.

  • What is the most popular direct flight origin to St. Louis?

    Currently, the most popular direct flight origin to St. Louis is Toronto Pearson Intl Airport. A round-trip direct flight from Toronto Pearson Intl Airport to St. Louis typically costs around C$ 667.

See more FAQs

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