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Cheap flights from St. Louis to London from $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to London departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:43 am - 8:40 am
STL
-
LGW
17h 57m
2 stops
American Airlines Logo
2:30 pm - 8:37 am
LGW
-
STL
24h 07m
2 stops
$982American Airlines
Thu, Oct 1 - Tue, Oct 6
Multiple Airlines Logo
4:57 pm - 10:00 am
STL
-
LGW
35h 03m
2 stops
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
STL
15h 59m
1 stop
$986Multiple Airlines
Wed, Jul 29 - Wed, Aug 12
Multiple Airlines Logo
8:08 pm - 10:00 am
STL
-
LGW
31h 52m
2 stops
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
STL
15h 59m
1 stop
$991Multiple Airlines
Fri, Jul 31 - Wed, Aug 12
Multiple Airlines Logo
4:57 pm - 10:00 am
STL
-
LGW
35h 03m
2 stops
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
STL
15h 59m
1 stop
$992Multiple Airlines
Sat, Aug 1 - Sat, Aug 8
Multiple Airlines Logo
4:09 pm - 10:00 am
STL
-
LGW
35h 51m
1 stop
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
STL
15h 59m
1 stop
$993Multiple Airlines
Fri, Aug 7 - Wed, Aug 12
Multiple Airlines Logo
3:00 pm - 2:40 pm
STL
-
LGW
17h 40m
2 stops
Multiple Airlines Logo
3:40 pm - 11:45 pm
LGW
-
STL
38h 05m
2 stops
$995Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
3:00 pm - 2:40 pm
STL
-
LGW
17h 40m
2 stops
Multiple Airlines Logo
3:40 pm - 11:45 pm
LGW
-
STL
38h 05m
2 stops
$996Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Delta Logo
12:52 pm - 9:40 am
STL
-
LGW
14h 48m
2 stops
Delta Logo
10:25 am - 11:26 pm
LGW
-
STL
19h 01m
2 stops
$997Delta
Mon, Aug 17 - Sun, Aug 23
Delta Logo
12:52 pm - 9:40 am
STL
-
LGW
14h 48m
2 stops
Delta Logo
10:25 am - 11:26 pm
LGW
-
STL
19h 01m
2 stops
$998Delta
Mon, Aug 17 - Sun, Aug 23
Multiple Airlines Logo
6:34 pm - 10:00 am
STL
-
LGW
33h 26m
2 stops
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
STL
15h 59m
1 stop
$999Multiple Airlines
Tue, Jul 28 - Tue, Aug 11

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Delta flights from St. Louis to London Gatwick Airport

Our best Delta deals on St. Louis to London Gatwick Airport flight tickets
Delta
Aug 17
STL12:52 pmLambert-St Louis
14h 48m
2 stops
LGW9:40 amLondon Gatwick
Aug 23
LGW10:25 amLondon Gatwick
19h 01m
2 stops
STL11:26 pmLambert-St Louis
$997
Delta
Aug 18
STL12:52 pmLambert-St Louis
14h 33m
2 stops
LGW9:25 amLondon Gatwick
Aug 23
LGW10:25 amLondon Gatwick
19h 01m
2 stops
STL11:26 pmLambert-St Louis
$998
Delta
Aug 15
STL10:33 amLambert-St Louis
16h 47m
2 stops
LGW9:20 amLondon Gatwick
Aug 29
LGW10:25 amLondon Gatwick
16h 08m
2 stops
STL8:33 pmLambert-St Louis
$1,047

American Airlines flights from St. Louis to London Gatwick Airport

Our best American Airlines deals on St. Louis to London Gatwick Airport flight tickets
American Airlines
Oct 1
STL8:43 amLambert-St Louis
17h 57m
2 stops
LGW8:40 amLondon Gatwick
Oct 6
LGW2:30 pmLondon Gatwick
24h 07m
2 stops
STL8:37 amLambert-St Louis
$982
American Airlines
Jul 29
STL6:55 amLambert-St Louis
17h 55m
2 stops
LGW6:50 amLondon Gatwick
Aug 26
LGW10:45 amLondon Gatwick
19h 29m
2 stops
STL12:14 amLambert-St Louis
$1,042
American Airlines
Jul 29
STL6:55 amLambert-St Louis
17h 55m
2 stops
LGW6:50 amLondon Gatwick
Aug 26
LGW10:45 amLondon Gatwick
19h 29m
2 stops
STL12:14 amLambert-St Louis
$1,047

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to London Gatwick Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 17, 2026.
Use the filters below to find and compare flights from St. Louis to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Thu 10/1

8:43 am-8:40 am

2 stops17h 57m

London Gatwick

Tue 10/6

2:30 pm-8:37 am

2 stops24h 07m

$982

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Wed 7/29

4:57 pm-10:00 am

2 stops35h 03m

London Gatwick

Wed 8/12

2:00 pm-11:59 pm

1 stop15h 59m

$986

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Fri 7/31

8:08 pm-10:00 am

2 stops31h 52m

London Gatwick

Wed 8/12

2:00 pm-11:59 pm

1 stop15h 59m

$991

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Sat 8/1

4:57 pm-10:00 am

2 stops35h 03m

London Gatwick

Sat 8/8

2:00 pm-11:59 pm

1 stop15h 59m

$992

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Fri 8/7

4:09 pm-10:00 am

1 stop35h 51m

London Gatwick

Wed 8/12

2:00 pm-11:59 pm

1 stop15h 59m

$993

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Wed 10/7

3:00 pm-2:40 pm

2 stops17h 40m

London Gatwick

Wed 10/21

3:40 pm-11:45 pm

2 stops38h 05m

$995

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Wed 10/7

3:00 pm-2:40 pm

2 stops17h 40m

London Gatwick

Wed 10/21

3:40 pm-11:45 pm

2 stops38h 05m

$996
Quickest round-trip

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 8/17

12:52 pm-9:40 am

2 stops14h 48m

London Gatwick

Sun 8/23

10:25 am-11:26 pm

2 stops19h 01m

$997

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 8/17

12:52 pm-9:40 am

2 stops14h 48m

London Gatwick

Sun 8/23

10:25 am-11:26 pm

2 stops19h 01m

$998

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Tue 7/28

6:34 pm-10:00 am

2 stops33h 26m

London Gatwick

Tue 8/11

2:00 pm-11:59 pm

1 stop15h 59m

$999

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from St. Louis to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to London Gatwick Airport (STL to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to London Gatwick Airport

Fastest flight time

15h 51m

Direct flights

None
The fastest flight from St. Louis to London Gatwick Airport takes 15h 51m
There are no direct flights from St. Louis to London Gatwick Airport. There are no popular flight routes from St. Louis to London Gatwick Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to London Gatwick Airport

  • How far is Lambert-St Louis to London Gatwick by plane?

    There are 4206.2 mi between Lambert-St Louis and London Gatwick. By plane, this route typically takes 15h 51m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to London Gatwick Airport?

    Prices for flights from Lambert-St Louis Airport to London Gatwick Airport were last updated today.

  • How old do you have to be to fly from Lambert-St Louis Airport to London Gatwick Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The necessary travel and health documents for your London Gatwick Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from St. Louis to London Gatwick Airport

  • How do I get Price Alerts for flights from St. Louis to London Gatwick Airport?

    Price Alerts will notify you by email when the price for flights to London Gatwick Airport from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from St. Louis to London Gatwick Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Wembley
Croydon
Stansted
Slough
Harrow
Kingston upon Thames
Watford
Brentwood
Ilford
Cobham
Folkestone
Guildford
Romford

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to London?

Finding the right flight to London from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from St. Louis to London with flexible booking policies on momondo?

Flights from St. Louis to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to London?

Once all potential St. Louis to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Gatwick Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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