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

Yes, flights with stopovers 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, American Airlines is rated the highest out of the airlines that fly to St. Charles.

How much is a return flight to St. Charles?

A return flight to St. Charles will typically cost around £1,141, however they can be found for as little as £722.

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

For those looking to save time traveling to St. Charles, London offers the quickest one-way flight (9 hours 5 minutes).

Does Lambert-St Louis have car hire?

Yes. Those touching down at Lambert-St Louis can take advantage of the car hire 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 mi away from Lambert-St Louis).

£322+ Cheap Flights to St. Charles

Flights to St. Charles in 2026

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 18 August 2026.

Tue 15/909:45 -

1 stop16h 59m

Tue 29/912:46 -

1 stop14h 19m

Deal found 15/8£595

Thu 22/1014:00 -

1 stop15h 13m

Tue 10/1110:35 -

2 stops37h 25m

Deal found 15/8£595

Wed 30/912:15 -

1 stop14h 29m

Wed 7/1017:27 -

1 stop12h 48m

Deal found 16/8£596

Tue 15/913:25 -

1 stop12h 33m

Tue 29/917:47 -

1 stop13h 18m

Deal found 15/8£597

Thu 24/918:40 -

2 stops35h 02m

Mon 28/914:30 -

2 stops19h 30m

Deal found 13/8£598

Wed 23/919:30 -

2 stops34h 12m

Sat 3/1015:54 -

2 stops18h 06m

Deal found 17/8£601

Tue 15/906:30 -

1 stop12h 55m

Tue 22/914:40 -

1 stop12h 55m

Deal found 18/8£601

Wed 9/914:00 -

1 stop33h 54m

Sat 19/920:10 -

2 stops55h 50m

Deal found 18/8£601

Mon 19/1014:00 -

1 stop15h 13m

Sat 7/1120:34 -

1 stop29h 41m

Deal found 15/8£603

Mon 28/906:30 -

1 stop12h 55m

Mon 5/1013:09 -

1 stop11h 46m

Deal found 14/8£604

Thu 1/1014:00 -

1 stop32h 34m

Sun 11/1016:30 -

1 stop35h 30m

Deal found 16/8£604

Mon 14/915:15 -

1 stop34h 43m

Sat 19/915:54 -

1 stop32h 31m

Deal found 17/8£605

Best flights to St. Charles
Discover carefully curated flight deals to St. Charles that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2026.

Tue 15/920:40 -

2 stops30h 04m

Tue 29/908:54 -

2 stops19h 56m

Deal found 13/8£620

Wed 23/906:50 -

2 stops14h 48m

Wed 7/1011:35 -

2 stops13h 20m

Deal found 14/8£633

Tue 15/908:25 -

2 stops18h 10m

Tue 29/917:47 -

2 stops16h 53m

Deal found 17/8£658

Tue 29/920:40 -

2 stops30h 04m

Mon 12/1007:28 -

2 stops30h 32m

Deal found 16/8£669

Wed 11/1109:15 -

2 stops36h 11m

Tue 17/1116:05 -

2 stops14h 45m

Deal found 17/8£686

Thu 1/1008:25 -

2 stops18h 10m

Thu 8/1010:31 -

2 stops15h 24m

Deal found 16/8£720

Sun 18/1018:30 -

2 stops32h 51m

Sat 31/1018:50 -

2 stops33h 25m

Deal found 17/8£818

Tue 29/910:45 -

2 stops15h 50m

Tue 6/1018:05 -

2 stops33h 20m

Deal found 14/8£869

Wed 11/1110:55 -

2 stops41h 29m

Tue 17/1107:30 -

2 stops44h 25m

Deal found 17/8£1,056

Wed 16/907:25 -

2 stops15h 41m

Wed 23/910:53 -

2 stops14h 22m

Deal found 17/8£634

Tue 22/909:35 -

2 stops18h 09m

Wed 30/911:01 -

2 stops22h 14m

Deal found 15/8£665

Wed 28/1009:50 -

2 stops34h 36m

Tue 3/1116:05 -

2 stops14h 45m

Deal found 17/8£688

Wed 11/1107:30 -

2 stops17h 53m

Tue 17/1118:50 -

1 stop11h 10m

Deal found 17/8£634

Wed 2/920:40 -

2 stops33h 34m

Wed 23/913:49 -

2 stops15h 01m

Deal found 14/8£708

Fri 11/908:25 -

2 stops17h 33m

Thu 17/910:29 -

2 stops15h 26m

Deal found 18/8£790

Fri 20/1109:50 -

2 stops35h 36m

Tue 1/1216:05 -

2 stops14h 45m

Deal found 15/8£720

Mon 30/1107:30 -

2 stops17h 53m

Sat 5/1213:30 -

1 stop14h 10m

Deal found 17/8£664

Wed 2/909:35 -

2 stops19h 59m

Wed 23/911:01 -

2 stops22h 14m

Deal found 14/8£735

Thu 24/911:05 -

1 stop14h 36m

Mon 28/913:09 -

1 stop11h 46m

Deal found 13/8£685

Thu 10/908:00 -

1 stop13h 38m

Thu 17/912:28 -

1 stop11h 27m

Deal found 18/8£758

Sat 7/1109:00 -

2 stops16h 23m

Sat 21/1115:15 -

2 stops13h 35m

Deal found 17/8£690

Sun 20/919:15 -

2 stops32h 28m

Tue 20/1010:00 -

2 stops23h 15m

Deal found 18/8£775

Wed 30/915:40 -

2 stops37h 35m

Wed 7/1015:00 -

2 stops17h 40m

Deal found 16/8£777

Fri 2/1006:50 -

2 stops14h 53m

Fri 9/1009:30 -

1 stop14h 25m

Deal found 18/8£696

Wed 28/1010:55 -

2 stops40h 29m

Tue 3/1107:30 -

2 stops20h 25m

Deal found 15/8£1,127

Wed 28/1011:55 -

2 stops15h 30m

Tue 3/1111:20 -

2 stops17h 35m

Deal found 18/8£814

Wed 2/908:40 -

2 stops16h 36m

Wed 23/910:53 -

2 stops14h 22m

Deal found 15/8£698

Tue 1/909:35 -

2 stops18h 01m

Sat 31/1011:31 -

2 stops40h 19m

Deal found 14/8£848

Sun 18/1017:35 -

2 stops33h 46m

Sat 31/1007:30 -

2 stops45h 25m

Deal found 17/8£1,130

Fri 4/915:40 -

2 stops36h 00m

Fri 18/917:40 -

2 stops15h 00m

Deal found 16/8£830

Find flight deals to St. Charles

Return from	£595
One-way from	£314
Popular in	August
Cheapest in	February
Average price	£961

Finnair
15/9-29/9
2 total stops
31h 18m total
London to St. Louis

Search Deals

2/12
1 total stop
20h 31m total
London to St. Charles

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£63 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for return flights in August 2026

Search Deals

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Tue 15/9

20:40-20:44

2 stops30h 04m

Lambert-St Louis

Tue 29/9

08:54-10:50

2 stops19h 56m

£620

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 23/9

06:50-15:38

2 stops14h 48m

Lambert-St Louis

Wed 7/10

11:35-06:55

2 stops13h 20m

£633

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 16/9

07:25-17:06

2 stops15h 41m

Lambert-St Louis

Wed 23/9

10:53-07:15

2 stops14h 22m

£634

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 11/11

07:30-19:23

2 stops17h 53m

Lambert-St Louis

Tue 17/11

18:50-12:00

1 stop11h 10m

£634

LondonSt. Louis

LCY London City - STL Lambert-St Louis

LCYSTL

London City

Tue 15/9

08:25-20:35

2 stops18h 10m

Lambert-St Louis

Tue 29/9

17:47-16:40

2 stops16h 53m

£658

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Mon 30/11

07:30-19:23

2 stops17h 53m

Lambert-St Louis

Sat 5/12

13:30-09:40

1 stop14h 10m

£664

LondonSt. Louis

LCY London City - STL Lambert-St Louis

LCYSTL

London City

Tue 22/9

09:35-21:44

2 stops18h 09m

Lambert-St Louis

Wed 30/9

11:01-15:15

2 stops22h 14m

£665

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Tue 29/9

20:40-20:44

2 stops30h 04m

Lambert-St Louis

Mon 12/10

07:28-20:00

2 stops30h 32m

£669

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Thu 24/9

11:05-19:41

1 stop14h 36m

Lambert-St Louis

Mon 28/9

13:09-06:55

1 stop11h 46m

£685

LondonSt. Louis

LCY London City - STL Lambert-St Louis

LCYSTL

London City

Wed 11/11

09:15-15:26

2 stops36h 11m

Lambert-St Louis

Tue 17/11

16:05-12:50

2 stops14h 45m

£686

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

LGW-STL

LHR-STL

LCY-STL

STN-STL

LTN-STL

Estimated return 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

LON-CH5

LGW-STL

LHR-STL

LCY-STL

STN-STL

How long is the flight to St. Charles?

On average, a flight from London to St. Charles takes 15 hours 54 minutes. Flights to St. Charles from other popular cities in United Kingdom 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 London to St. Charles are British Airways, Virgin Atlantic and United Airlines.

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

The cheapest airlines flying from London to St. Charles are American Airlines, Aer Lingus and Lufthansa.

Rainfall in St. Charles by month

In terms of precipitation, rainfall in St. Charles ranges from 56.0 - 119.0 inches 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 United Airlines,Virgin Atlantic, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!

United Airlines

7.4

Good

10,103 reviews

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Virgin Atlantic

7.4

Good

695 reviews

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

American Airlines

7.1

Good

11,958 reviews

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

Air Canada

7.1

Good

11,497 reviews

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

British Airways

6.7

Okay

8,177 reviews

United Airlines

7.4

Good

10,103 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Chris,Aug 2026

MIA - ORD

FAQs about flying to St. Charles

Can I find cheaper flights to St. Charles if I am willing to have stopovers?
Yes, flights with stopovers 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, American Airlines is rated the highest out of the airlines that fly to St. Charles.
How much is a return flight to St. Charles?
A return flight to St. Charles will typically cost around £1,141, however they can be found for as little as £722.
Where does the fastest flight to St. Charles depart from?
For those looking to save time traveling to St. Charles, London offers the quickest one-way flight (9 hours 5 minutes).
Does Lambert-St Louis have car hire?
Yes. Those touching down at Lambert-St Louis can take advantage of the car hire 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 mi away from Lambert-St Louis).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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

Deals for St. Charles flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Charles.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights to St. Charles, users can toggle the no change fees filter when performing a flight search.

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Not ready to book yet? You can track prices for flights to St. Charles on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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£322+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.

Flights to St. Charles in 2026

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 18 August 2026.

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 18 August 2026.

Best flights to St. CharlesDiscover carefully curated flight deals to St. Charles that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2026.

Discover carefully curated flight deals to St. Charles that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2026.

Direct flights to St. CharlesExplore direct flight options to St. Charles based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 August 2026.

Explore direct flight options to St. Charles based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 August 2026.

Last-minute flights to St. CharlesDiscover last-minute flight deals to St. Charles. Data last updated 18 August 2026 and is based on user searches.

Discover last-minute flight deals to St. Charles. Data last updated 18 August 2026 and is based on user searches.

One-way flights to St. CharlesSearch for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated 18 August 2026.

Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated 18 August 2026.

Find flight deals to St. Charles

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

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.

Cheapflights Insights

How long is the flight to St. Charles?

On average, a flight from London to St. Charles takes 15 hours 54 minutes. Flights to St. Charles from other popular cities in United Kingdom 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 London to St. Charles are British Airways, Virgin Atlantic and United Airlines.

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

The cheapest airlines flying from London to St. Charles are American Airlines, Aer Lingus and Lufthansa.

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 inches 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.

Reviews of airlines servicing St. Charles

Read through reviews of airlines serving the United States, such as United Airlines,Virgin Atlantic, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

FAQs about flying to St. Charles

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

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

How much is a return flight to St. Charles?

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

Does Lambert-St Louis have car hire?

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

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Complete your trip

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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 18 August 2026.

Best flights to St. Charles
Discover carefully curated flight deals to St. Charles that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2026.

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 18 August 2026.

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated 18 August 2026 and is based on user searches.

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 18 August 2026.