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C$ 230+ Cheap flights to St. Charles

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
2 Apr — 9 Apr1
1 adult

Flights to St. Charles in 2025

Find the latest flights to St. Charles in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 28 March 2025.

Round-trip from

C$ 530

One-way from

C$ 230

Popular in

January

Cheapest in

May

Average price

C$ 753
8/4-6/5
  • 8/4-6/5
  • 3 total stops
  • 18h 49m total
  • Toronto to St. Louis
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9/4
  • 9/4
  • 2 total stops
  • 23h 16m total
  • Toronto to St. Charles
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Highest demand for flights based on searches. 4% potential increase in price (C$ 49 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals to St. Charles

Cheapest flights to St. Charles
Explore the most affordable flight options available to St. Charles. Find the lowest fares based on data from user searches, with prices last updated on 28 March 2025.

Tue 8/44:15 p.m.YYZ - STL
1 stop8h 31mMultiple Airlines
Tue 6/59:50 a.m.STL - YYZ
2 stops10h 18mMultiple Airlines
Deal found 27/3C$ 530
Thu 1/511:30 a.m.YYZ - STL
Nonstop2h 06mAir Canada
Sun 4/51:30 p.m.STL - YYZ
1 stop7h 09mAir Canada
Deal found 27/3C$ 537
Wed 21/510:20 a.m.YYZ - STL
1 stop8h 42mDelta
Tue 27/55:40 p.m.STL - YYZ
1 stop5h 16mDelta
Deal found 27/3C$ 545
Fri 12/97:20 a.m.YYZ - STL
2 stops9h 24mUnited Airlines
Mon 15/91:30 p.m.STL - YYZ
1 stop8h 05mUnited Airlines
Deal found 28/3C$ 572
Mon 21/49:45 a.m.YYZ - STL
1 stop12h 51mWestJet
Fri 25/46:50 a.m.STL - YYZ
1 stop15h 05mWestJet
Deal found 27/3C$ 630
Wed 23/46:30 a.m.YYZ - STL
2 stops18h 29mAlaska Airlines
Wed 30/46:30 a.m.STL - YYZ
1 stop31h 30mAlaska Airlines
Deal found 27/3C$ 1,053
Thu 10/46:20 p.m.YYZ - STL
1 stop20h 10mLufthansa
Fri 9/53:30 p.m.STL - YYZ
1 stop20h 10mLufthansa
Deal found 27/3C$ 16,514

Cheapflights Fare Finder

Locate flights to St. Charles that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 28 March 2025.
Use the filters below to find and compare flights to St. Charles that are best for you.

Fly from

Toronto

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 8/4

4:15 p.m.-11:46 p.m.

1 stop8h 31m

Lambert-St Louis

Tue 6/5

9:50 a.m.-9:08 p.m.

2 stops10h 18m

C$ 530

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/5

11:30 a.m.-12:36 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 4/5

1:30 p.m.-9:39 p.m.

1 stop7h 09m

C$ 537

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 21/5

10:20 a.m.-6:02 p.m.

1 stop8h 42m

Lambert-St Louis

Tue 27/5

5:40 p.m.-11:56 p.m.

1 stop5h 16m

C$ 545

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 12/9

7:20 a.m.-3:44 p.m.

2 stops9h 24m

Lambert-St Louis

Mon 15/9

1:30 p.m.-10:35 p.m.

1 stop8h 05m

C$ 572

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 21/4

9:45 a.m.-9:36 p.m.

1 stop12h 51m

Lambert-St Louis

Fri 25/4

6:50 a.m.-10:55 p.m.

1 stop15h 05m

C$ 630

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 23/4

6:30 a.m.-11:59 p.m.

2 stops18h 29m

Lambert-St Louis

Wed 30/4

6:30 a.m.-3:00 p.m.

1 stop31h 30m

C$ 1,053

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 10/4

6:20 p.m.-1:30 p.m.

1 stop20h 10m

Lambert-St Louis

Fri 9/5

3:30 p.m.-12:40 p.m.

1 stop20h 10m

C$ 16,514

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/5

4:00 p.m.-12:06 a.m.

1 stop9h 06m

C$ 237

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 5/5

10:20 a.m.-6:18 p.m.

1 stop8h 58m

C$ 297

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 31/5

11:30 a.m.-12:36 p.m.

Nonstop2h 06m

C$ 299

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/3

Showing 1-10 of 12 results
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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
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 Insights

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

When is the best time to book a flight to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to St. Charles. Price data was last updated on 21 March 2025.

To ensure you get the cheapest price possible for a flight to St. Charles, you should look to book at least 46 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to St. Charles?

On average, a flight from Toronto to St. Charles takes 2 hours 6 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.

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

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

Air Canada

Air Canada

From C$ 373

United Airlines

United Airlines

From C$ 419

WestJet

WestJet

From C$ 441

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

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

Rainfall in St. Charles by month

Plan your trip to St. Charles by taking into account the average rainfall totals 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

Plan your trip to St. Charles by taking into account the average temperature totals 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

Get insights into the airlines that provide service to St. Charles. 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. Charles. Reviews last updated 28 March 2025.
Read through reviews of airlines servicing St. Charles, such as Alaska Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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
9,798 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Boarding

8.2

Entertainment

7.1

Overall

8.0

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

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.

  • How much is a round-trip flight to St. Charles?

    A round-trip flight to St. Charles will typically cost around C$ 385, however they can be found for as little as C$ 223.

  • 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 6 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. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

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Can Cheapflights notify me if prices for flights to St. Charles become cheaper?

Yes, Cheapflights offers price alerts on St. Charles flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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