Find flights
Deals
Airlines

£340+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
19 Jul — 26 Jul1
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
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 19 June 2026.

Mon 9/1107:05
LHR
-
STL
3 stops22h 34m
Scandinavian Airlines
Fri 13/1116:40
STL
-
LHR
2 stops19h 50m
Scandinavian Airlines
Deal found 17/6£748
Tue 1/914:00
LGW
-
STL
1 stop16h 14m
Multiple Airlines
Sat 31/1006:00
STL
-
LGW
2 stops23h 55m
Multiple Airlines
Deal found 17/6£751
Wed 8/714:00
LGW
-
STL
1 stop15h 59m
Multiple Airlines
Tue 14/716:09
STL
-
LGW
1 stop35h 51m
Multiple Airlines
Deal found 19/6£751
Wed 23/916:25
LHR
-
STL
Nonstop9h 05m
British Airways
Sat 3/1013:25
STL
-
LHR
1 stop12h 25m
British Airways
Deal found 17/6£754
Fri 26/609:15
LHR
-
STL
1 stop14h 04m
Iberia
Sat 27/620:14
STL
-
LHR
1 stop29h 51m
Iberia
Deal found 17/6£754
Fri 26/609:15
LHR
-
STL
2 stops15h 45m
Multiple Airlines
Sat 27/620:14
STL
-
LHR
1 stop29h 51m
Multiple Airlines
Deal found 17/6£755
Sat 21/1119:40
LGW
-
STL
2 stops19h 18m
Iberia
Sat 28/1107:00
STL
-
LGW
2 stops30h 00m
Iberia
Deal found 19/6£755
Wed 7/1019:30
LHR
-
STL
2 stops31h 19m
Scandinavian Airlines
Tue 13/1015:42
STL
-
LHR
2 stops18h 18m
Scandinavian Airlines
Deal found 16/6£757
Fri 3/709:15
LHR
-
STL
1 stop14h 06m
British Airways
Sun 19/721:40
STL
-
LHR
Nonstop8h 00m
British Airways
Deal found 18/6£758
Tue 25/811:30
LGW
-
STL
2 stops37h 57m
Iberia
Tue 8/913:25
STL
-
LGW
2 stops24h 35m
Iberia
Deal found 17/6£760
Fri 28/806:20
LTN
-
STL
2 stops20h 02m
Multiple Airlines
Mon 7/912:10
STL
-
LTN
2 stops21h 35m
Multiple Airlines
Deal found 18/6£761
Tue 14/712:15
LHR
-
STL
1 stop18h 01m
Finnair
Tue 21/721:35
STL
-
LHR
Nonstop8h 00m
Finnair
Deal found 16/6£765

Find flight deals to St. Charles

Find the latest flights to St. Charles in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 19 June 2026.

Return from

£748

One-way from

£340

Popular in

July

Cheapest in

February

Average price

£850
Scandinavian Airlines
  • Scandinavian Airlines
  • 9/11-13/11
  • 5 total stops
  • 42h 24m total
  • London to St. Louis
Search Deals
10/10
  • 10/10
  • 2 total stops
  • 25h 40m total
  • London to St. Charles
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£126 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for return flights in June 2026
Search Deals

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 858,174 searches and data was last updated on 19 June 2026.
Use the filters below to find and compare flights to St. Charles that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 8/7

14:00-23:59

1 stop15h 59m

Lambert-St Louis

Tue 14/7

16:09-10:00

1 stop35h 51m

£751

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Fri 28/8

06:20-20:22

2 stops20h 02m

Lambert-St Louis

Mon 7/9

12:10-15:45

2 stops21h 35m

£761

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 1/9

09:20-20:42

2 stops17h 22m

Lambert-St Louis

Sat 31/10

17:45-13:15

2 stops14h 30m

£782

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 9/11

19:40-23:56

2 stops34h 16m

Lambert-St Louis

Fri 13/11

13:20-10:50

2 stops39h 30m

£810

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 28/8

12:40-20:22

1 stop13h 42m

Lambert-St Louis

Mon 7/9

08:55-10:45

1 stop19h 50m

£840

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 24/7

14:00-23:59

1 stop15h 59m

Lambert-St Louis

Fri 7/8

16:09-10:00

1 stop35h 51m

£843

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 6/7

15:00-23:57

1 stop14h 57m

Lambert-St Louis

Sun 12/7

21:40-11:40

Nonstop8h 00m

£846

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 29/7

07:30-18:13

2 stops16h 43m

Lambert-St Louis

Wed 5/8

13:13-09:20

2 stops14h 07m

£850

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Tue 30/6

06:00-23:29

3 stops23h 29m

Lambert-St Louis

Fri 17/7

08:55-22:40

3 stops31h 45m

£853

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 27/7

12:15-19:26

1 stop13h 11m

Lambert-St Louis

Wed 5/8

13:13-06:45

1 stop11h 32m

£873

Flights are sorted by cheapest return flights first.

Deals found on 15/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 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

How long is the flight to St. Charles?

On average, a flight from London to St. Charles takes 14 hours 11 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, United Airlines and Virgin Atlantic.

British Airways
British Airways
From £484
Virgin Atlantic
Virgin Atlantic
From £516
United Airlines
United Airlines
From £485
Lufthansa
Lufthansa
From £631

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 British Airways.

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.

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 19 June 2026.
Read through reviews of airlines serving the United States, such as Virgin Atlantic,United Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Virgin Atlantic
7.5
Good
690 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
United Airlines
7.4
Good
9,860 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Air Canada
7.1
Good
11,220 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
Lufthansa
6.8
Okay
8,075 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
British Airways
6.7
Okay
8,054 reviews
Virgin Atlantic
7.5
Good
690 reviews
Check prices

Overall

7.5

Food

6.9

Boarding

7.7

Crew

8.1

Entertainment

7.5

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

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 £447, however they can be found for as little as £245.

  • 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. Hampton Inn St. Louis-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

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.
First Class flights to St. Charles
Business Class flights to St. Charles
Prem Economy Class flights to St. Charles
Economy Class flights to St. Charles

Fly with Cheapflights

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

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.

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

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.