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Flights to Lambert-St Louis

C$ 190 Cheap flights to St. Louis

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Canada to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 a.m. - 11:41 a.m.
YHZ
-
STL
6h 41m
1 stop
United Airlines Logo
6:00 a.m. - 2:03 p.m.
STL
-
YHZ
6h 03m
1 stop
C$ 364United Airlines
Wed, 27 May - Fri, 29 May
United Airlines Logo
11:35 p.m. - 8:41 a.m.
YVR
-
STL
7h 06m
1 stop
United Airlines Logo
5:10 a.m. - 9:51 a.m.
STL
-
YVR
6h 41m
1 stop
C$ 376United Airlines
Sat, 23 May - Mon, 29 Jun
United Airlines Logo
4:50 p.m. - 9:16 p.m.
YHZ
-
STL
6h 26m
1 stop
United Airlines Logo
6:00 a.m. - 2:03 p.m.
STL
-
YHZ
6h 03m
1 stop
C$ 386United Airlines
Wed, 27 May - Fri, 29 May
American Airlines Logo
11:39 a.m. - 7:20 p.m.
YYZ
-
STL
8h 41m
1 stop
American Airlines Logo
1:45 p.m. - 11:29 p.m.
STL
-
YYZ
8h 44m
1 stop
C$ 416American Airlines
Wed, 27 May - Wed, 10 Jun
Air Canada Logo
6:00 a.m. - 12:06 p.m.
YHZ
-
STL
8h 06m
1 stop
Air Canada Logo
8:40 a.m. - 8:30 p.m.
STL
-
YHZ
9h 50m
2 stops
C$ 423Air Canada
Tue, 2 Jun - Sat, 6 Jun
Air Canada Logo
6:20 a.m. - 12:06 p.m.
YHZ
-
STL
7h 46m
2 stops
Air Canada Logo
8:40 a.m. - 8:30 p.m.
STL
-
YHZ
9h 50m
2 stops
C$ 429Air Canada
Tue, 2 Jun - Sat, 6 Jun
American Airlines Logo
7:20 a.m. - 2:06 p.m.
YYZ
-
STL
7h 46m
1 stop
American Airlines Logo
6:00 a.m. - 2:30 p.m.
STL
-
YYZ
7h 30m
1 stop
C$ 437American Airlines
Wed, 27 May - Wed, 10 Jun
WestJet Logo
3:30 p.m. - 9:09 p.m.
YHZ
-
STL
7h 39m
1 stop
WestJet Logo
1:59 p.m. - 9:40 p.m.
STL
-
YHZ
5h 41m
1 stop
C$ 443WestJet
Wed, 27 May - Fri, 29 May
Delta Logo
3:30 p.m. - 11:59 p.m.
YHZ
-
STL
10h 29m
2 stops
Delta Logo
10:19 a.m. - 9:40 p.m.
STL
-
YHZ
9h 21m
1 stop
C$ 448Delta
Wed, 27 May - Fri, 29 May
Delta Logo
2:00 p.m. - 12:36 a.m.
YYC
-
STL
9h 36m
1 stop
Delta Logo
3:45 p.m. - 8:54 p.m.
STL
-
YYC
6h 09m
1 stop
C$ 465Delta
Sat, 3 Oct - Sat, 10 Oct

momondo Fare Finder

 
Locate flights to Lambert-St Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 96,600 searches and data was last updated on 10 April 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Wed 27/5

7:00 a.m.-11:41 a.m.

1 stop6h 41m

Lambert-St Louis

Fri 29/5

6:00 a.m.-2:03 p.m.

1 stop6h 03m

C$ 364

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Sat 23/5

11:35 p.m.-8:41 a.m.

1 stop7h 06m

Lambert-St Louis

Mon 29/6

5:10 a.m.-9:51 a.m.

1 stop6h 41m

C$ 376
Quickest round-trip

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Wed 27/5

4:50 p.m.-9:16 p.m.

1 stop6h 26m

Lambert-St Louis

Fri 29/5

6:00 a.m.-2:03 p.m.

1 stop6h 03m

C$ 386

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/5

11:39 a.m.-7:20 p.m.

1 stop8h 41m

Lambert-St Louis

Wed 10/6

1:45 p.m.-11:29 p.m.

1 stop8h 44m

C$ 416

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 2/6

6:00 a.m.-12:06 p.m.

1 stop8h 06m

Lambert-St Louis

Sat 6/6

8:40 a.m.-8:30 p.m.

2 stops9h 50m

C$ 423

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 2/6

6:20 a.m.-12:06 p.m.

2 stops7h 46m

Lambert-St Louis

Sat 6/6

8:40 a.m.-8:30 p.m.

2 stops9h 50m

C$ 429

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/5

7:20 a.m.-2:06 p.m.

1 stop7h 46m

Lambert-St Louis

Wed 10/6

6:00 a.m.-2:30 p.m.

1 stop7h 30m

C$ 437

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Wed 27/5

3:30 p.m.-9:09 p.m.

1 stop7h 39m

Lambert-St Louis

Fri 29/5

1:59 p.m.-9:40 p.m.

1 stop5h 41m

C$ 443

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Wed 27/5

3:30 p.m.-11:59 p.m.

2 stops10h 29m

Lambert-St Louis

Fri 29/5

10:19 a.m.-9:40 p.m.

1 stop9h 21m

C$ 448

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 3/10

2:00 p.m.-12:36 a.m.

1 stop9h 36m

Lambert-St Louis

Sat 10/10

3:45 p.m.-8:54 p.m.

1 stop6h 09m

C$ 465

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

St. Louis flights insights and trends

Explore insights for your St. Louis flight to craft the best travel plan

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

The month of June is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 480. If you don’t want to visit St. Louis in June, then you should wait until January to fly from Canada, when ticket prices are also cheap, with an average price of C$ 546.

What is the absolute cheapest flight to St. Louis?

See prices from:

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Saturday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 584. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 814.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the morning when flights can be purchased for as low as C$ 545. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 656 on average. Flights to St. Louis from Canada in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Canada when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around C$ 682 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Canada for as low as C$ 497 on momondo.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport
Find Flights from Toronto Pearson Intl Airport to St. Louis
CHEAPEST MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORTJune21% cheaperFlying from Toronto Pearson Intl Airport to St. Louis costs on average just C$ 544 in June
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORTApril62% more expensiveIt costs about C$ 1,108 for flights to St. Louis from Toronto Pearson Intl Airport in April
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM TORONTO PEARSON INTL AIRPORTMay572% more users visitedMore momondo users searched in flights to St. Louis from Toronto Pearson Intl Airport in May than any other month

Cheap St. Louis flight deals and tips

Summary info about St. Louis flight prices, duration and airlines

Best One-Way Price

C$ 190

Best Round-Trip Price

C$ 364

Fastest flight time

6h 02m

Popular in

May
The best one-way flight price to St. Louis from Canada in the last 72 hours is C$ 190 (Vancouver Intl to Lambert-St Louis).
Search Deals
The best round-trip flight price to St. Louis from Canada in the last 72 hours is C$ 364 (Halifax Intl to Lambert-St Louis).
Search Deals
The fastest flight to St. Louis from Canada takes 6h 02m (Ottawa to Lambert-St Louis).
Search Deals
May has the highest demand for flights to St. Louis, with a 20% price increase on average.
Search Deals

Frequently asked questions about flying to St. Louis

Is there an alternative airport near St. Louis?

Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.

When did momondo last update prices for flights to Lambert-St Louis Airport?

Prices for flights to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights to Lambert-St Louis Airport?

As of April 2026, there are 7 operators available to choose from for flights to Lambert-St Louis Airport.

How old do you have to be to fly to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal to St. Louis?

It is quick and easy to find flights to St. Louis on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis with this policy.

How can momondo help me find flights to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to St. Louis.

I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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