Find flights
Deals
Airlines

£269+ 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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
5 Sep — 12 Sep1
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 6 August 2026.

Wed 28/1006:40 -
2 stops22h 14m
Sun 1/1112:00 -
2 stops24h 30m
Deal found 4/8£611
Tue 1/906:30 -
1 stop12h 55m
Tue 8/912:28 -
1 stop14h 52m
Deal found 3/8£612
Wed 2/908:40 -
2 stops16h 02m
Wed 23/912:10 -
1 stop12h 20m
Deal found 4/8£613
Wed 28/1006:30 -
1 stop13h 15m
Tue 3/1113:08 -
1 stop10h 47m
Deal found 5/8£614
Wed 2/916:25 -
Nonstop9h 05m
Wed 30/912:46 -
1 stop18h 04m
Deal found 4/8£616
Wed 2/910:05 -
1 stop16h 21m
Fri 11/917:18 -
1 stop11h 32m
Deal found 4/8£617
Sun 30/806:40 -
3 stops23h 18m
Sun 6/913:04 -
2 stops20h 56m
Deal found 2/8£618
Wed 23/909:45 -
1 stop16h 59m
Fri 2/1012:46 -
1 stop14h 19m
Deal found 3/8£619
Thu 3/914:00 -
1 stop31h 28m
Thu 10/918:39 -
1 stop33h 21m
Deal found 6/8£619
Thu 15/1014:00 -
1 stop35h 39m
Mon 26/1020:34 -
1 stop28h 26m
Deal found 3/8£620
Wed 16/908:55 -
1 stop16h 12m
Wed 23/921:35 -
Nonstop8h 00m
Deal found 1/8£621
Fri 4/914:00 -
1 stop32h 11m
Sun 20/920:10 -
2 stops31h 50m
Deal found 4/8£624

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 6 August 2026.

Return from

£611

One-way from

£269

Popular in

August

Cheapest in

February

Average price

£877
Scandinavian Airlines
  • Scandinavian Airlines
  • 28/10-1/11
  • 4 total stops
  • 46h 44m total
  • London to St. Louis
Search Deals
21/9
  • 21/9
  • 2 total stops
  • 53h 10m total
  • London to St. Charles
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for return flights in August 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 6 August 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 London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Thu 3/9

14:00-15:28

1 stop31h 28m

Lambert-St Louis

Thu 10/9

18:39-10:00

1 stop33h 21m

£619

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Fri 4/9

14:00-16:11

1 stop32h 11m

Lambert-St Louis

Sun 20/9

17:19-10:00

1 stop34h 41m

£631

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 2/9

08:40-19:16

2 stops16h 36m

Lambert-St Louis

Wed 23/9

10:53-07:15

2 stops14h 22m

£631

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Wed 16/9

10:25-19:58

2 stops15h 33m

Lambert-St Louis

Wed 23/9

13:55-16:00

2 stops20h 05m

£646

LondonSt. Louis

LCY London City - STL Lambert-St Louis

LCYSTL

London City

Tue 15/9

20:15-23:16

2 stops33h 01m

Lambert-St Louis

Tue 29/9

13:55-09:30

2 stops13h 35m

£660

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Mon 7/9

06:30-15:10

2 stops14h 40m

Lambert-St Louis

Tue 15/9

12:00-10:20

2 stops16h 20m

£663

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Mon 30/11

06:30-16:34

2 stops16h 04m

Lambert-St Louis

Thu 3/12

17:37-11:40

1 stop12h 03m

£663

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Mon 7/9

20:40-00:14

2 stops33h 34m

Lambert-St Louis

Wed 7/10

17:27-20:00

2 stops44h 33m

£673
Fastest return journey

LondonSt. Louis

LHR London Heathrow - STL Lambert-St Louis

LHRSTL

London Heathrow

Wed 16/9

12:15-20:44

1 stop14h 29m

Lambert-St Louis

Wed 23/9

21:35-11:35

Nonstop8h 00m

£677

LondonSt. Louis

LGW London Gatwick - STL Lambert-St Louis

LGWSTL

London Gatwick

Mon 7/9

10:25-23:58

2 stops19h 33m

Lambert-St Louis

Wed 7/10

12:00-09:25

2 stops15h 25m

£678

Flights are sorted by cheapest return flights first.

Deals found on 3/8

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 15 hours 7 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.

British Airways
British Airways
From £479
Virgin Atlantic
Virgin Atlantic
From £375
United Airlines
United Airlines
From £294
American Airlines
American Airlines
From £220

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.

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

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

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
694 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

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
10,073 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
American Airlines
7.1
Good
11,867 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

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
11,431 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

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
8,147 reviews
Virgin Atlantic
7.5
Good
694 reviews
Check prices

Overall

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.5

Food

6.9

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 £1,012, however they can be found for as little as £727.

  • 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

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.