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Cheap flights from London to St. Louis from $358

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to St. Louis departing on 1/13. 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 London to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from London to St. Louis 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 London to St. Louis.

Cheap last minute flights

Planning a quick getaway from London to St. Louis? 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 St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from London to St. Louis

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

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
2:00 pm - 11:31 pmLGW-STL
15h 31m1 stop
5:05 pm - 10:00 amSTL-LGW
34h 55m1 stop
Thu, Jan 23 - Sun, Jan 26
2:00 pm - 11:31 pmLGW-STL
15h 31m1 stop
8:31 pm - 10:00 amSTL-LGW
31h 29m2 stops
Thu, Jan 23 - Sun, Jan 26
12:35 pm - 11:57 pmLHR-STL
17h 22m1 stop
2:15 pm - 12:00 pmSTL-LHR
15h 45m1 stop
$769Finnair
Find Deal
Wed, Dec 4 - Wed, Dec 11
11:45 am - 11:26 pmLHR-STL
16h 41m1 stop
2:15 pm - 12:00 pmSTL-LHR
16h 45m1 stop
$780Finnair
Find Deal
Mon, Mar 10 - Sun, Mar 23
6:30 am - 8:49 pmLHR-STL
20h 19m2 stops
5:57 pm - 1:45 pmSTL-LHR
13h 48m2 stops
$965Delta
Find Deal
Wed, Dec 4 - Wed, Dec 11
11:45 am - 8:49 pmLHR-STL
15h 04m2 stops
6:00 am - 6:20 amSTL-LHR
18h 20m1 stop
$966Delta
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:40 pm - 9:04 pmLHR-STL
32h 24m2 stops
2:00 pm - 5:40 pmSTL-LHR
21h 40m2 stops
$998Scandinavian Airlines
Find Deal
Thu, Dec 12 - Wed, Feb 5
5:00 pm - 11:38 pmLHR-STL
36h 38m2 stops
12:52 pm - 5:40 pmSTL-LHR
22h 48m2 stops
$999Scandinavian Airlines
Find Deal
Sun, Feb 16 - Wed, Feb 26
11:55 am - 10:09 pmLHR-STL
16h 14m1 stop
2:57 pm - 10:20 amSTL-LHR
13h 23m1 stop
$1,069British Airways
Find Deal
Sun, Jan 12 - Thu, May 8
8:20 am - 7:30 pmLHR-STL
17h 10m1 stop
11:41 am - 7:20 amSTL-LHR
13h 39m1 stop
$1,195British Airways
Find Deal
Sat, Jan 4 - Sat, Jan 11
2:00 pm - 2:43 pmLGW-STL
30h 43m2 stops
Mon, Jan 13
2:00 pm - 11:27 pmLGW-STL
15h 27m1 stop
Mon, Jan 13
2:50 pm - 9:22 amLHR-STL
24h 32m2 stops
$560WestJet
Find Deal
Thu, Dec 12
7:50 am - 9:53 pmLHR-STL
20h 03m2 stops
$793Aer Lingus
Find Deal
Tue, Dec 17
2:10 pm - 10:09 pmLHR-STL
13h 59m1 stop
$851Iberia
Find Deal
Mon, Jan 13
12:15 pm - 6:04 pmLHR-STL
11h 49m1 stop
$853Iberia
Find Deal
Sun, Apr 13
1:15 pm - 7:40 pmLCY-STL
36h 25m2 stops
$1,049Aer Lingus
Find Deal
Sun, Apr 13
2:50 pm - 11:14 pmLHR-STL
38h 24m2 stops
$1,303WestJet
Find Deal
Sun, Jan 5
3:45 pm - 10:28 pmLHR-STL
12h 43m1 stop
$1,594British Airways
Find Deal
Sun, Jan 5
1:50 pm - 10:33 pmLHR-STL
14h 43m1 stop
$2,815British Airways
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Thu, Dec 12
6:40 am - 11:41 pmLHR-STL
23h 01m2 stops
10:14 am - 4:00 pmSTL-LHR
23h 46m2 stops
$1,299Scandinavian Airlines
Find Deal
Sat, Nov 23 - Fri, Nov 29
12:00 pm - 12:06 amLGW-STL
42h 06m2 stops
6:35 am - 7:30 amSTL-LGW
18h 55m1 stop
$1,358
Find Deal
Sun, Nov 24 - Tue, Nov 26
4:55 pm - 2:25 pmLGW-STL
27h 30m2 stops
3:20 pm - 9:30 pmSTL-LGW
24h 10m2 stops
$1,366
Find Deal
Sat, Nov 23 - Fri, Nov 29
10:25 am - 12:10 pmLHR-STL
31h 45m3 stops
1:00 pm - 5:20 pmSTL-LHR
22h 20m3 stops
$1,372
Find Deal
Sun, Nov 24 - Tue, Nov 26
4:30 pm - 9:36 pmLGW-STL
35h 06m3 stops
1:00 pm - 10:55 amSTL-LGW
15h 55m3 stops
$1,381
Find Deal
Sun, Nov 24 - Tue, Nov 26
6:00 am - 11:30 amLHR-STL
35h 30m3 stops
6:30 am - 12:50 pmSTL-LHR
24h 20m2 stops
$1,428
Find Deal
Sun, Nov 24 - Tue, Nov 26
6:30 am - 4:33 pmLHR-STL
16h 03m2 stops
6:00 am - 7:55 amSTL-LHR
19h 55m1 stop
$1,460Delta
Find Deal
Sat, Nov 23 - Fri, Nov 29
10:00 am - 11:28 pmLHR-STL
19h 28m1 stop
1:05 pm - 11:15 amSTL-LHR
16h 10m1 stop
$1,535Austrian Airlines
Find Deal
Sat, Nov 23 - Fri, Nov 29
7:50 am - 10:10 pmLHR-STL
20h 20m2 stops
5:19 pm - 8:05 amSTL-LHR
32h 46m2 stops
$1,642Aer Lingus
Find Deal
Sun, Nov 24 - Tue, Nov 26
2:10 pm - 8:15 pmLHR-STL
12h 05m1 stop
5:19 pm - 6:50 amSTL-LHR
31h 31m1 stop
$2,527British Airways
Find Deal
Sun, Nov 24 - Tue, Nov 26

Air Canada flights from London to St. Louis

Our best Air Canada deals on London to St. Louis flight tickets
Air Canada
Jan 5
LHR3:00 pmLondon Heathrow
30h 06m
2 stops
STL3:06 pmLambert-St Louis
Jan 12
STL3:50 pmLambert-St Louis
32h 40m
1 stop
LHR6:30 amLondon Heathrow
Air Canada
Dec 26
LHR2:30 pmLondon Heathrow
30h 36m
1 stop
STL3:06 pmLambert-St Louis
Dec 31
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow

British Airways flights from London to St. Louis

Our best British Airways deals on London to St. Louis flight tickets
British Airways
Jan 12
LHR11:55 amLondon Heathrow
16h 14m
1 stop
STL10:09 pmLambert-St Louis
May 8
STL2:57 pmLambert-St Louis
13h 23m
1 stop
LHR10:20 amLondon Heathrow
British Airways
Jan 4
LHR8:20 amLondon Heathrow
17h 10m
1 stop
STL7:30 pmLambert-St Louis
Jan 11
STL11:41 amLambert-St Louis
13h 39m
1 stop
LHR7:20 amLondon Heathrow
British Airways
Nov 30
LHR8:15 amLondon Heathrow
19h 44m
2 stops
STL9:59 pmLambert-St Louis
Dec 7
STL2:30 pmLambert-St Louis
11h 45m
1 stop
LHR8:15 amLondon Heathrow

See travel insights to St. Louis from

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

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 cheapest month to fly from London to St. Louis?

January. The cheapest time of year to fly to St. Louis from London is January. Most expensive is August

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

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

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

At noon. London to St. Louis flights are approximately 11% more expensive in the morning than at noon

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

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

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

19 days before. The cheapest time to buy a flight from London to St. Louis is approximately 19 days to departure

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

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

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

As of November 2024, prices for London to St. Louis flights are approximately 9% more expensive when compared to flights at the same time last year.

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


When to book flights from London to St. Louis

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

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

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

Best Price Found

$358

Fastest flight time

11h 49m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from London in the past 72 hours is $358. The best round-trip flight deal from London to St. Louis found on momondo in the last 72 hours is $490.
The fastest flight from London to St. Louis takes 11h 49m
There are no direct flights from London to St. Louis. Popular non-direct routes for this connection are London Heathrow Airport - Lambert-St Louis Airport, London Gatwick Airport - Lambert-St Louis Airport and London Stansted Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    Lambert-St Louis is 4197.7 mi away from London. By plane, this route typically takes 13h 00m.

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

    Prices for flights from London to Lambert-St Louis Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 London to St. Louis?


Best airlines flying from London to St. Louis

Compare and see reviews for airlines that fly from London to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $278Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $583Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
British AirwaysPriceFrom $961Free CancellationRating
6.6
6,837 reviews
Search British Airways flights

Why use momondo?

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

Finding the right flight to St. Louis from London 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 St. Louis quick and easy, saving you time and money.

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

Yes. All flights to St. Louis from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential London to St. Louis 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 London to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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