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

Currently, the cheapest month for flights to St. Charles is January . The most expensive month for flights is September . The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

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$ 396, however they can be found for as little as C$ 260.

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).

C$ 237+ Flights to St. Charles

Flights to St. Charles in 2025

Round-trip from	C$ 576
One-way from	C$ 237
Popular in	January
Cheapest in	May
Average price	C$ 704

United Airlines
1/4-5/4
Nonstop
4h 09m total
Toronto to St. Louis

Search Deals

3/4
1 total stop
11h 47m total
Toronto to St. Charles

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (C$ 65 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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 22 February 2025.

Tue 1/41:40 p.m.YYZ - STL

Nonstop2h 09mUnited Airlines

Sat 5/43:30 p.m.STL - YYZ

Nonstop2h 00mUnited Airlines

Deal found 21/2C$ 576

Tue 25/36:15 a.m.YYZ - STL

1 stop9h 34mDelta

Sun 30/36:10 a.m.STL - YYZ

1 stop6h 37mDelta

Deal found 21/2C$ 581

Fri 28/36:52 a.m.YYZ - STL

2 stops29h 53mMultiple Airlines

Mon 31/312:15 p.m.STL - YYZ

3 stops30h 15mMultiple Airlines

Deal found 21/2C$ 585

Tue 1/41:40 p.m.YYZ - STL

Nonstop2h 09mAir Canada

Sat 5/45:33 p.m.STL - YYZ

1 stop4h 33mAir Canada

Deal found 21/2C$ 591

Thu 22/56:30 a.m.YYZ - STL

1 stop4h 53mWestJet

Tue 27/56:30 a.m.STL - YYZ

2 stops10h 34mWestJet

Deal found 21/2C$ 679

Mon 7/44:30 p.m.YYZ - STL

1 stop32h 29mAlaska Airlines

Mon 14/46:44 a.m.STL - YYZ

2 stops28h 51mAlaska Airlines

Deal found 20/2C$ 1,201

Best flights to St. Charles
Discover carefully curated flight deals to St. Charles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 22 February 2025.

Tue 1/41:40 p.m.YYZ - STL

Nonstop2h 09mUnited Airlines

Sat 5/43:30 p.m.STL - YYZ

Nonstop2h 00mUnited Airlines

Deal found 21/2C$ 576

Tue 25/36:15 a.m.YYZ - STL

1 stop9h 34mDelta

Sun 30/36:10 a.m.STL - YYZ

1 stop6h 37mDelta

Deal found 21/2C$ 581

Fri 28/36:52 a.m.YYZ - STL

2 stops29h 53mMultiple Airlines

Mon 31/312:15 p.m.STL - YYZ

3 stops30h 15mMultiple Airlines

Deal found 21/2C$ 585

Tue 1/41:40 p.m.YYZ - STL

Nonstop2h 09mAir Canada

Sat 5/45:33 p.m.STL - YYZ

1 stop4h 33mAir Canada

Deal found 21/2C$ 591

Thu 22/56:30 a.m.YYZ - STL

1 stop4h 53mWestJet

Tue 27/56:30 a.m.STL - YYZ

2 stops10h 34mWestJet

Deal found 21/2C$ 679

Mon 7/44:30 p.m.YYZ - STL

1 stop32h 29mAlaska Airlines

Mon 14/46:44 a.m.STL - YYZ

2 stops28h 51mAlaska Airlines

Deal found 20/2C$ 1,201

Direct flights to St. Charles
Explore direct flight options to St. Charles based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 February 2025.

Tue 1/41:40 p.m.YYZ - STL

Nonstop2h 09mUnited Airlines

Sat 5/43:30 p.m.STL - YYZ

Nonstop2h 00mUnited Airlines

Deal found 21/2C$ 576

Fri 28/31:50 p.m.YYZ - STL

Nonstop2h 16mAir Canada

Mon 31/33:50 p.m.STL - YYZ

Nonstop2h 00mAir Canada

Deal found 21/2C$ 593

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated 22 February 2025 and is based on user searches.

Wed 26/27:55 a.m.YYZ - STL

1 stop9h 54mDelta

Tue 4/36:06 a.m.STL - YYZ

1 stop9h 02mDelta

Deal found 21/2C$ 765

Mon 3/32:00 p.m.YYZ - STL

2 stops10h 43mMultiple Airlines

Tue 4/36:26 p.m.STL - YYZ

1 stop11h 19mMultiple Airlines

Deal found 20/2C$ 610

Mon 3/31:50 p.m.YYZ - STL

Nonstop2h 16mAir Canada

Tue 4/36:30 a.m.STL - YYZ

1 stop4h 55mAir Canada

Deal found 20/2C$ 859

Mon 3/34:20 p.m.YYZ - STL

2 stops18h 39mAlaska Airlines

Tue 4/33:10 p.m.STL - YYZ

2 stops22h 45mAlaska Airlines

Deal found 20/2C$ 2,271

Mon 17/37:20 a.m.YYZ - STL

2 stops8h 03mUnited Airlines

Mon 24/31:05 p.m.STL - YYZ

2 stops8h 44mUnited Airlines

Deal found 20/2C$ 625

Tue 25/36:15 a.m.YYZ - STL

1 stop9h 34mDelta

Sun 30/36:10 a.m.STL - YYZ

1 stop6h 37mDelta

Deal found 21/2C$ 581

Tue 25/39:30 a.m.YYZ - STL

2 stops8h 22mWestJet

Sun 30/36:00 a.m.STL - YYZ

1 stop6h 33mWestJet

Deal found 20/2C$ 703

Wed 26/34:44 p.m.YYZ - STL

2 stops22h 31mAlaska Airlines

Sun 30/36:44 a.m.STL - YYZ

1 stop30h 56mAlaska Airlines

Deal found 21/2C$ 1,306

Fri 28/36:52 a.m.YYZ - STL

2 stops29h 53mMultiple Airlines

Mon 31/312:15 p.m.STL - YYZ

3 stops30h 15mMultiple Airlines

Deal found 21/2C$ 585

Fri 28/31:50 p.m.YYZ - STL

Nonstop2h 16mAir Canada

Mon 31/31:12 p.m.STL - YYZ

1 stop5h 25mAir Canada

Deal found 21/2C$ 593

One-way flights to St. Charles
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated 22 February 2025.

Thu 3/47:05 a.m.YYZ - STL

1 stop11h 47mMultiple Airlines

Deal found 21/2C$ 237

Thu 3/41:40 p.m.YYZ - STL

Nonstop2h 09mAir Canada

Deal found 21/2C$ 334

Thu 3/46:15 a.m.YYZ - STL

2 stops9h 27mUnited Airlines

Deal found 21/2C$ 342

Find flights to St. Charles within your budget

Fly from

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

1:40 p.m.-2:49 p.m.

Nonstop2h 09m

Lambert-St Louis

Sat 5/4

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

Nonstop2h 00m

C$ 576

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

1:40 p.m.-2:49 p.m.

Nonstop2h 09m

Lambert-St Louis

Sat 5/4

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

Nonstop2h 00m

C$ 578

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 25/3

6:15 a.m.-2:49 p.m.

1 stop9h 34m

Lambert-St Louis

Sun 30/3

6:10 a.m.-1:47 p.m.

1 stop6h 37m

C$ 581

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 28/3

6:52 a.m.-11:45 a.m.

2 stops29h 53m

Lambert-St Louis

Mon 31/3

12:15 p.m.-7:30 p.m.

3 stops30h 15m

C$ 585

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 22/5

6:30 a.m.-10:23 a.m.

1 stop4h 53m

Lambert-St Louis

Tue 27/5

6:30 a.m.-6:04 p.m.

2 stops10h 34m

C$ 679

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 11/4

4:30 p.m.-9:01 a.m.

2 stops17h 31m

Lambert-St Louis

Fri 18/4

3:11 p.m.-12:35 p.m.

2 stops20h 24m

C$ 1,151

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 3/4

7:05 a.m.-5:52 p.m.

1 stop11h 47m

C$ 237

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 3/4

5:15 p.m.-9:36 p.m.

1 stop5h 21m

C$ 297

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 4/4

1:40 p.m.-2:49 p.m.

Nonstop2h 09m

C$ 324

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 3/4

1:40 p.m.-2:49 p.m.

Nonstop2h 09m

C$ 334

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/2

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.

Travel insights for flights to St. Charles

Get recent, data-driven insights about flights to St. Charles including ideal travel times, pricing trends, and more.

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

To ensure you get the cheapest price possible for a flight to St. Charles, you should look to book at least 78 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.

Weekly flight availability to St. Charles

The most flights from Toronto to St. Charles are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 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, United Airlines and WestJet.

Air Canada

From C$ 376

United Airlines

From C$ 408

WestJet

From C$ 454

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

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 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

9,697 reviews

Check prices

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

9,697 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

Check prices

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

8,213 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

Check prices

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

8,759 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

Check prices

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

2,800 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

Check prices

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

Air Canada

7.0

Good

8,756 reviews

Alaska Airlines

8.0

Very good

9,697 reviews

Check prices

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

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$ 396, however they can be found for as little as C$ 260.
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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Why should you use Cheapflights to find cheap flight tickets to St. Charles?

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Can Cheapflights find flights to St. Charles with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to St. Charles flexibly with Cheapflights today.

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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C$ 237+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.

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 22 February 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals to St. Charles

Cheapest flights to St. CharlesExplore the most affordable flight options available to St. Charles. Find the lowest fares based on data from user searches, with prices last updated on 22 February 2025.

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 22 February 2025.

Find flights to St. Charles within your budget

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 22 February 2025.

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.

Travel insights for flights to St. Charles

Get recent, data-driven insights about flights to St. Charles including ideal travel times, pricing trends, and more.

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 14 February 2025.

How long is the flight to St. Charles?

Weekly flight availability to St. Charles

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

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

Rainfall in St. Charles by month

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

Temperature in St. Charles by month

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

Reviews of airlines servicing St. Charles

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.

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

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

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

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

Does Lambert-St Louis have rental cars?

Are there hotels close to Lambert-St Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to St. Charles by cabin class

Find flights to St. Charles, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to St. Charles?

Why should you use Cheapflights to find cheap flight tickets to St. Charles?

Can Cheapflights find flights to St. Charles with no change fees?

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

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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 22 February 2025.