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C$ 243+ Cheap flights to St. Charles

— STL
15 Oct — 22 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to St. Charles in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Charles

Wed 7/101:15 p.m. -
1 stop8h 42m
Wed 14/107:29 a.m. -
1 stop9h 15m
Deal found 10/9C$ 447
Thu 29/107:15 a.m. -
1 stop17h 01m
Mon 2/116:44 p.m. -
2 stops23h 36m
Deal found 10/9C$ 472
Wed 7/107:29 a.m. -
1 stop10h 24m
Fri 9/107:29 a.m. -
1 stop9h 15m
Deal found 10/9C$ 486
Wed 2/123:15 p.m. -
1 stop8h 00m
Fri 4/127:26 a.m. -
1 stop9h 15m
Deal found 10/9C$ 499
Tue 6/101:15 p.m. -
1 stop12h 04m
Fri 9/105:00 a.m. -
1 stop8h 33m
Deal found 10/9C$ 500
Mon 26/109:35 a.m. -
1 stop14h 38m
Mon 2/116:44 p.m. -
2 stops23h 36m
Deal found 10/9C$ 503
Sat 24/107:29 a.m. -
1 stop10h 22m
Mon 26/107:03 a.m. -
1 stop8h 44m
Deal found 10/9C$ 510
Mon 26/109:35 a.m. -
1 stop14h 38m
Fri 30/106:44 p.m. -
2 stops23h 36m
Deal found 10/9C$ 511
Thu 29/109:35 a.m. -
2 stops33h 05m
Thu 5/114:26 p.m. -
1 stop20h 14m
Deal found 14/9C$ 517
Thu 22/101:15 p.m. -
1 stop8h 42m
Mon 26/107:03 a.m. -
1 stop8h 44m
Deal found 10/9C$ 522

Find flight deals to St. Charles

Round-trip from

C$ 446

One-way from

C$ 244

Popular in

March

Cheapest in

January

Average price

C$ 929
American Airlines
  • American Airlines
  • 10/10-14/10
  • 2 total stops
  • 22h 13m total
  • Toronto to St. Louis
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27/10-31/12
  • 27/10-31/12
  • 2 total stops
  • 33h 05m total
  • Toronto to St. Charles
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 153 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease (C$ 51 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights to St. Charles that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 27/10

9:35 a.m.-5:40 p.m.

2 stops33h 05m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 243

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sun 27/9

4:45 p.m.-1:31 p.m.

2 stops21h 46m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 321

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 3/10

11:10 p.m.-1:10 p.m.

3 stops39h 00m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 332

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 3/10

7:30 a.m.-7:41 p.m.

2 stops13h 11m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 381
Quickest round-trip

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 15/10

7:15 p.m.-8:20 p.m.

Nonstop2h 05m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 410

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 3/10

7:15 p.m.-8:20 p.m.

Nonstop2h 05m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 410

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 6/10

12:55 p.m.-2:00 p.m.

Nonstop2h 05m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 410

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sun 27/9

8:50 a.m.-12:15 p.m.

1 stop4h 25m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 415

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 26/9

6:34 p.m.-11:42 p.m.

1 stop6h 08m

Lambert-St Louis

Fri 2/10

6:15 a.m.-11:13 p.m.

1 stop15h 58m

C$ 714

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Wed 7/10

12:55 p.m.-2:00 p.m.

Nonstop2h 05m

Lambert-St Louis

Wed 14/10

2:40 p.m.-5:34 p.m.

Nonstop1h 54m

C$ 739

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight to St. Charles

How long is the flight to St. Charles?

On average, a flight from Toronto to St. Charles takes 2 hours 5 minutes. Flights to St. Charles from other popular cities in Canada will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to St. Charles

The most flights from Toronto to St. Charles are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

What are the most popular airlines that fly to St. Charles?

The most popular airlines flying from Toronto to St. Charles are Air Canada and United Airlines.

Air Canada
Air Canada
From C$ 188
United Airlines
United Airlines
From C$ 340
WestJet
WestJet
From C$ 423
Delta
Delta
From C$ 210

What are the cheapest airlines that fly to St. Charles?

The cheapest airlines flying from Toronto to St. Charles are Air Canada and United Airlines.

Rainfall in St. Charles by month

In terms of precipitation, rainfall in St. Charles ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Charles when rainfall is around 56.0 mm.

Temperature in St. Charles by month

If weather is an important factor for your trip to St. Charles, 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).

Reviews of airlines servicing St. Charles

Read through reviews of airlines serving the United States, such as Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,630 reviews
Check prices

Crew

7.8

Food

6.3

Comfort

7.1

Boarding

7.3

Entertainment

6.8

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Sylvia,Aug 2026

YYZ - PHL

Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had
Air Canada
7.1
Good
11,630 reviews
Air Canada
7.1
Good
11,630 reviews
Check prices

Crew

7.8

Food

6.3

Comfort

7.1

Boarding

7.3

Entertainment

6.8

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Sylvia,Aug 2026

YYZ - PHL

Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had

FAQs about flying to St. Charles

  • Can I find cheaper flights to St. Charles if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Charles on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Charles?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to St. Charles.

  • Where does the fastest flight to St. Charles depart from?

    For those looking to save time traveling to St. Charles, Toronto offers the quickest one-way flight (2 hours 5 minutes).

  • Does Lambert-St Louis have rental cars?

    Yes. Those touching down at Lambert-St Louis can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. St Ann Townhome Less Than 1 Mi to International Airport! is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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