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Cheap flights to St. Charles

— STL
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals to St. Charles

Round-trip from

C$ 478

Popular in

March

Cheapest in

January

Average price

C$ 996
American Airlines
  • American Airlines
  • 11/12-18/12
  • 2 total stops
  • 20h 02m total
  • Toronto to St. Louis
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Highest demand for flights based on searches. 11% potential increase in price (C$ 99 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease (C$ 46 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Insights

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

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

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

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
11,833 reviews
Check prices

Comfort

7.1

Food

6.3

Entertainment

6.8

Boarding

7.3

Crew

7.8

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
11,833 reviews
Air Canada
7.1
Good
11,833 reviews
Check prices

Comfort

7.1

Food

6.3

Entertainment

6.8

Boarding

7.3

Crew

7.8

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.

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

    A round-trip flight to St. Charles will typically cost around C$ 598, however they can be found for as little as C$ 220.

  • 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 13 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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