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C$ 323+ Direct 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 4/3. 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
9 Mar — 16 Mar1
1 adult
1 adult, Economy, 0 bags

Non-stop 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 7 February 2026.

Sat 6/61:00 p.m.
STL
-
YUL
Nonstop2h 35m
Air Canada
Sun 7/66:10 p.m.
YUL
-
STL
Nonstop2h 55m
Air Canada
Deal found 6/2C$ 673
Sun 15/34:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Tue 17/32:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Deal found 4/2C$ 719
Fri 27/24:05 p.m.
STL
-
YYZ
Nonstop2h 01m
Air Canada
Mon 2/32:00 p.m.
YYZ
-
STL
Nonstop2h 29m
Air Canada
Deal found 6/2C$ 763
Sun 31/51:00 p.m.
STL
-
YUL
Nonstop2h 35m
Air Canada
Sun 7/66:10 p.m.
YUL
-
STL
Nonstop2h 55m
Air Canada
Deal found 7/2C$ 778
Mon 23/34:05 p.m.
STL
-
YYZ
Nonstop2h 01m
United Airlines
Mon 30/32:10 p.m.
YYZ
-
STL
Nonstop2h 14m
United Airlines
Deal found 6/2C$ 822
Fri 24/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Sun 26/42:10 p.m.
YYZ
-
STL
Nonstop2h 14m
Air Canada
Deal found 5/2C$ 832
Fri 24/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Tue 28/42:10 p.m.
YYZ
-
STL
Nonstop2h 14m
Air Canada
Deal found 3/2C$ 834
Sun 26/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Thu 30/42:10 p.m.
YYZ
-
STL
Nonstop2h 14m
Air Canada
Deal found 4/2C$ 882
Fri 22/57:30 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Mon 25/511:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Deal found 4/2C$ 897
Tue 28/712:10 p.m.
STL
-
YUL
Nonstop2h 32m
Air Canada
Mon 3/84:40 p.m.
YUL
-
STL
Nonstop2h 47m
Air Canada
Deal found 4/2C$ 898
Fri 29/57:30 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Mon 8/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Deal found 7/2C$ 902
Wed 15/44:05 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Sun 19/42:10 p.m.
YYZ
-
STL
Nonstop2h 14m
Air Canada
Deal found 4/2C$ 905

Find direct flights from St. Louis within your budget

 
Use the slider to find direct flights from 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. This data was last updated on 7 February 2026.

Fly to

Pearson Intl

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 6/6

1:00 p.m.-4:35 p.m.

Nonstop2h 35m

Montreal Pierre Elliott Trudeau Intl

Sun 7/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

C$ 673

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 9/3

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

Nonstop2h 01m

Toronto Pearson Intl

Fri 13/3

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

Nonstop2h 29m

C$ 719

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 27/2

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

Nonstop2h 01m

Toronto Pearson Intl

Sun 1/3

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

Nonstop2h 29m

C$ 719

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 4/3

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

Nonstop2h 01m

Toronto Pearson Intl

Wed 11/3

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

Nonstop2h 29m

C$ 719

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 23/3

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

Nonstop2h 01m

Toronto Pearson Intl

Mon 30/3

2:10 p.m.-3:24 p.m.

Nonstop2h 14m

C$ 719

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 27/2

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

Nonstop2h 01m

Toronto Pearson Intl

Mon 2/3

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

Nonstop2h 29m

C$ 763

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sun 31/5

1:00 p.m.-4:35 p.m.

Nonstop2h 35m

Montreal Pierre Elliott Trudeau Intl

Fri 5/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

C$ 778

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 6/6

1:00 p.m.-4:35 p.m.

Nonstop2h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 10/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

C$ 778

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 3/6

1:00 p.m.-4:35 p.m.

Nonstop2h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 9/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

C$ 778

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 6/6

1:00 p.m.-4:35 p.m.

Nonstop2h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 9/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

C$ 778

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 33 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.

Reviews of airlines flying non-stop to St. Louis

Get insights into the airlines that provide direct flights 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 an airline for your flight from St. Louis. Reviews last updated Cheapflights.
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
10,697 reviews
Check prices

Crew

7.8

Overall

7.1

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

YXE - YYZ

We were over three hours delayed leaving Saskatoon and missed our connection to Montreal. We were then rerouted all the way to Zurich. We were over seven hours late getting to our final destination. Then our luggage was lost for lost for three days. All three flights were delayed and our trip was definitely impacted.
Air Canada
7.1
Good
10,697 reviews
Air Canada
7.1
Good
10,697 reviews
Check prices

Crew

7.8

Overall

7.1

Food

6.3

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

YXE - YYZ

We were over three hours delayed leaving Saskatoon and missed our connection to Montreal. We were then rerouted all the way to Zurich. We were over seven hours late getting to our final destination. Then our luggage was lost for lost for three days. All three flights were delayed and our trip was definitely impacted.

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 7 February 2026.

  • Where can you fly direct from St. Louis?

    Currently, the most popular direct flight destination from St. Louis is Los Angeles.

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

    If you're seeking the lowest price on a direct flight from St. Louis, September is worth consideration as prices are at their lowest, on average. In terms of the number of daily non-stop flights, January offers travelers the most options.

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