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Cheap flights from St. Louis to London from $275

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 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to London

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to London.

Cheap last minute flights

Planning a quick getaway from St. Louis to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to London

Find recent round-trip train or bus tickets from St. Louis to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
6:46 pm - 10:35 amSTL-LGW
33h 49m2 stops
2:00 pm - 11:28 pmLGW-STL
15h 28m1 stop
Mon, Jan 13 - Mon, Jan 27
8:31 pm - 10:00 amSTL-LGW
31h 29m2 stops
2:00 pm - 11:28 pmLGW-STL
15h 28m1 stop
Fri, Jan 31 - Sat, Feb 8
4:30 pm - 10:50 amSTL-LHR
12h 20m1 stop
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
$779United Airlines
Find Deal
Sun, Feb 23 - Fri, Mar 7
3:50 pm - 8:30 amSTL-LHR
10h 40m1 stop
1:45 pm - 3:06 pmLHR-STL
55h 21m2 stops
$785Air Canada
Find Deal
Mon, Jan 13 - Mon, Jan 27
6:30 am - 11:15 amSTL-LHR
22h 45m1 stop
2:30 pm - 3:06 pmLHR-STL
30h 36m1 stop
$789United Airlines
Find Deal
Tue, Jan 28 - Tue, Feb 4
9:40 am - 9:00 amSTL-LGW
18h 20m2 stops
3:05 pm - 8:20 amLGW-STL
23h 15m2 stops
$822American Airlines
Find Deal
Mon, Mar 17 - Sun, Mar 30
3:50 pm - 8:30 amSTL-LHR
10h 40m1 stop
12:05 pm - 3:06 pmLHR-STL
57h 01m2 stops
$835Air Canada
Find Deal
Mon, Dec 2 - Mon, Dec 9
2:30 pm - 6:50 amSTL-LHR
10h 20m1 stop
11:55 am - 5:58 pmLHR-STL
12h 03m1 stop
$840British Airways
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Tue, Dec 10 - Fri, Dec 27
12:01 pm - 6:20 amSTL-LHR
12h 19m1 stop
7:40 pm - 9:40 pmLHR-STL
31h 00m2 stops
$874British Airways
Find Deal
Thu, Mar 6 - Wed, Mar 12
9:34 am - 9:00 amSTL-LGW
17h 26m2 stops
12:30 pm - 8:50 amLGW-STL
26h 20m2 stops
$1,268American Airlines
Find Deal
Sat, Dec 14 - Sun, Jan 5
12:15 pm - 8:15 amSTL-LHR
14h 00m2 stops
Sat, Jan 18
12:15 pm - 10:50 amSTL-LHR
16h 35m3 stops
Wed, Feb 12
5:02 pm - 10:35 amSTL-LGW
59h 33m2 stops
Tue, Dec 3
5:02 pm - 7:30 pmSTL-LHR
44h 28m2 stops
Tue, Dec 3
2:15 pm - 10:25 amSTL-LHR
14h 10m2 stops
$454American Airlines
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Wed, Feb 12
3:50 pm - 6:30 amSTL-LHR
32h 40m1 stop
$456Air Canada
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Sat, Feb 15
2:10 pm - 6:50 pmSTL-LGW
23h 40m2 stops
$464British Airways
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Mon, Mar 24
6:23 pm - 8:15 amSTL-LHR
32h 52m1 stop
$467British Airways
Find Deal
Sat, Mar 22
6:25 am - 6:40 amSTL-LHR
18h 15m2 stops
$478United Airlines
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Sun, Jan 5
3:32 pm - 12:50 pmSTL-LCY
16h 18m2 stops
$495United Airlines
Find Deal
Tue, Mar 18
5:29 pm - 10:35 amSTL-LGW
35h 06m2 stops
2:00 pm - 10:46 pmLGW-STL
14h 46m1 stop
Sat, Nov 9 - Sat, Dec 7
5:29 pm - 10:00 amSTL-LGW
34h 31m2 stops
2:00 pm - 10:46 pmLGW-STL
14h 46m1 stop
Sun, Nov 10 - Sat, Dec 7
5:29 pm - 10:35 amSTL-LGW
35h 06m2 stops
2:00 pm - 8:26 amLGW-STL
24h 26m1 stop
Sat, Nov 9 - Sat, Nov 16
5:29 pm - 10:35 amSTL-LGW
35h 06m2 stops
2:00 pm - 4:34 pmLGW-STL
32h 34m2 stops
Sat, Nov 9 - Mon, Nov 11
1:05 pm - 7:55 amSTL-LHR
12h 50m1 stop
1:30 pm - 1:55 pmLHR-STL
30h 25m1 stop
$1,716United Airlines
Find Deal
Fri, Nov 8 - Sat, Nov 16
5:31 pm - 12:05 pmSTL-LHR
12h 34m1 stop
12:45 pm - 8:59 pmLHR-STL
38h 14m2 stops
$1,768British Airways
Find Deal
Sun, Nov 10 - Sun, Dec 1
3:50 pm - 8:30 amSTL-LHR
10h 40m1 stop
11:10 am - 3:06 pmLHR-STL
33h 56m1 stop
$1,771Air Canada
Find Deal
Thu, Nov 7 - Mon, Nov 11
3:53 pm - 8:15 amSTL-LHR
10h 22m1 stop
8:20 am - 4:37 pmLHR-STL
14h 17m1 stop
$1,781British Airways
Find Deal
Sun, Nov 10 - Sat, Nov 30
10:15 am - 6:20 amSTL-LHR
14h 05m1 stop
6:30 am - 5:15 pmLHR-STL
16h 45m2 stops
$1,818Delta
Find Deal
Sat, Nov 9 - Sat, Nov 30
12:58 pm - 9:30 amSTL-LCY
14h 32m2 stops
10:00 am - 11:41 pmLCY-STL
19h 41m2 stops
$10,186Delta
Find Deal
Fri, Nov 8 - Sat, Nov 16

Lufthansa flights from St. Louis to London

Our best Lufthansa deals on St. Louis to London flight tickets
Lufthansa
Dec 29
STL8:25 amLambert-St Louis
16h 15m
1 stop
LHR6:40 amLondon Heathrow
Jan 14
LHR4:00 pmLondon Heathrow
13h 30m
1 stop
STL11:30 pmLambert-St Louis
Lufthansa
Apr 6
STL5:18 pmLambert-St Louis
20h 22m
2 stops
LHR7:40 pmLondon Heathrow
Apr 12
LHR5:50 pmLondon Heathrow
27h 31m
2 stops
STL3:21 pmLambert-St Louis
Lufthansa
Mar 6
STL1:03 pmLambert-St Louis
22h 37m
2 stops
LCY5:40 pmLondon City
Mar 12
LCY5:15 pmLondon City
52h 51m
2 stops
STL5:06 pmLambert-St Louis

Air Canada flights from St. Louis to London

Our best Air Canada deals on St. Louis to London flight tickets
Air Canada
Jan 13
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow
Jan 27
LHR1:45 pmLondon Heathrow
55h 21m
2 stops
STL3:06 pmLambert-St Louis
Air Canada
Dec 2
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow
Dec 9
LHR12:05 pmLondon Heathrow
57h 01m
2 stops
STL3:06 pmLambert-St Louis
Air Canada
Dec 3
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow
Dec 13
LHR6:00 pmLondon Heathrow
27h 06m
1 stop
STL3:06 pmLambert-St Louis

How to get the cheapest flight ticket from St. Louis to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and London?

What is the cheapest month to fly from St. Louis to London?

February. The cheapest time of year to fly to London from St. Louis is February. Most expensive is June

What is the cheapest day to depart St. Louis for London?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Tuesday

When is the cheapest time to fly from St. Louis to London?

In the afternoon. St. Louis to London flights are approximately 7% more expensive at noon than in the afternoon

What is the cheapest airline that flies to London from St. Louis?

Iberia. Iberia, Virgin Atlantic, and United Airlines are the most popular carriers operating from St. Louis to London

What is the cheapest St. Louis to London flight route?

Lambert-St Louis - London Gatwick. Fly from Lambert-St Louis to London Gatwick for the best St. Louis - London flight prices

How far in advance should you book St. Louis to London flights?

2 days before. The cheapest time to buy a flight from St. Louis to London is approximately 2 days to departure

Can stopping save me money on St. Louis to London flights?

You could potentially save up to 15% on your flight if you consider stops on a St. Louis to London flight.

How have St. Louis to London flight prices changed over time?

As of November 2024, prices for St. Louis to London flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to London

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

Cheap St. Louis to London (STL to LON) flight deals and tips

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

Best Price Found

$275

Fastest flight time

9h 55m

Direct flights

None

Airports in London

6 airports
The best one-way flight to London from St. Louis in the past 72 hours is $275. The best round-trip flight deal from St. Louis to London found on momondo in the last 72 hours is $641.
The fastest flight from St. Louis to London takes 9h 55m
There are no direct flights from St. Louis to London. Popular non-direct routes for this connection are Lambert-St Louis Airport - London Luton Airport, Lambert-St Louis Airport - London Gatwick Airport and Lambert-St Louis Airport - London Heathrow Airport.
There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

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

    London is 4197.7 mi away from Lambert-St Louis. Flights usually cover this in 9h 55m, depending on flying conditions and air traffic around both airports.

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

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

  • How many operators does momondo search for flights from Lambert-St Louis Airport to London?

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

    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.

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

    The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to London?


Best airlines flying from St. Louis to London

Compare and see reviews for airlines that fly from St. Louis to London with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $490Free CancellationRating
7.8
1,350 reviews
Search KLM flights
United AirlinesPriceFrom $587Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
IberiaPriceFrom $595Free CancellationRating
7.0
2,668 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $624Free CancellationRating
7.6
666 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $635Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $652Free CancellationRating
6.7
6,840 reviews
Search British Airways flights
DeltaPriceFrom $659Free CancellationRating
8.0
8,830 reviews
Search Delta flights
Air CanadaPriceFrom $694Free CancellationRating
7.0
8,130 reviews
Search Air Canada flights
Air FrancePriceFrom $769Free CancellationRating
7.4
1,530 reviews
Search Air France flights
LufthansaPriceFrom $802Free CancellationRating
6.8
7,165 reviews
Search Lufthansa flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to London for you.

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

momondo does allow users to show only those flights to London from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for St. Louis to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.


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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London