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Cheap flights from London to St. Louis from $355

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 1/27. 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 - 11:28 pmLGW-STL
15h 28m1 stop
5:05 pm - 10:00 amSTL-LGW
34h 55m1 stop
Mon, Jan 27 - Wed, Jan 29
2:00 pm - 6:40 amLGW-STL
22h 40m1 stop
4:13 pm - 10:55 amSTL-LGW
36h 42m2 stops
Sat, Nov 23 - Sat, Dec 7
2:00 pm - 11:24 pmLGW-STL
15h 24m1 stop
8:34 pm - 10:35 amSTL-LGW
32h 01m1 stop
Thu, Dec 5 - Mon, Dec 9
10:10 am - 11:57 pmLHR-STL
19h 47m1 stop
1:45 pm - 7:50 amSTL-LHR
12h 05m1 stop
$725Finnair
Find Deal
Thu, Nov 21 - Sat, Dec 7
2:30 pm - 11:57 pmLHR-STL
15h 27m1 stop
9:34 am - 7:00 amSTL-LHR
15h 26m1 stop
$729Finnair
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
1:10 pm - 6:40 amSTL-LHR
11h 30m1 stop
$1,017Lufthansa
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:00 pm - 3:06 pmLHR-STL
27h 06m1 stop
10:18 am - 5:55 amSTL-LHR
13h 37m2 stops
$1,024Lufthansa
Find Deal
Tue, Jan 7 - Tue, Mar 4
12:30 pm - 8:54 amLGW-STL
26h 24m2 stops
9:34 am - 9:00 amSTL-LGW
17h 26m2 stops
$1,085American Airlines
Find Deal
Thu, Dec 5 - Mon, Dec 9
2:10 pm - 10:05 pmLHR-STL
13h 55m1 stop
3:10 pm - 8:15 amSTL-LHR
11h 05m1 stop
$1,146British Airways
Find Deal
Tue, Dec 10 - Tue, Jan 7
8:40 am - 9:53 pmLCY-STL
19h 13m2 stops
2:41 pm - 1:45 pmSTL-LCY
17h 04m2 stops
$1,527British Airways
Find Deal
Wed, Dec 11 - Thu, Jan 2
2:00 pm - 11:28 pmLGW-STL
15h 28m1 stop
Mon, Jan 27
6:50 am - 7:07 amLHR-STL
30h 17m3 stops
Mon, Apr 28
2:50 pm - 11:38 pmLHR-STL
38h 48m2 stops
$576WestJet
Find Deal
Tue, Jan 28
2:50 pm - 4:51 pmLHR-STL
32h 01m2 stops
$633WestJet
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Sun, Feb 23
7:15 am - 9:53 pmLCY-STL
20h 38m2 stops
$837British Airways
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Thu, Dec 12
6:50 am - 8:41 pmLCY-STL
19h 51m2 stops
$858British Airways
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Mon, Jan 27
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
$1,726Lufthansa
Find Deal
Wed, Mar 5
4:00 pm - 11:32 pmLHR-STL
13h 32m1 stop
$1,742Lufthansa
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Tue, Mar 4
3:45 pm - 10:05 pmLHR-STL
12h 20m1 stop
$2,777American Airlines
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Mon, Dec 9
3:45 pm - 9:45 amLHR-STL
24h 00m1 stop
$2,840American Airlines
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Sat, Dec 14
11:15 am - 10:53 pmLHR-STL
17h 38m1 stop
3:53 pm - 11:30 amSTL-LHR
13h 37m1 stop
$1,138Finnair
Find Deal
Mon, Nov 4 - Thu, Nov 14
11:15 am - 10:53 pmLHR-STL
17h 38m1 stop
1:46 pm - 9:20 amSTL-LHR
13h 34m1 stop
$1,158Finnair
Find Deal
Mon, Nov 4 - Thu, Nov 14
10:30 am - 3:06 pmLHR-STL
34h 36m2 stops
3:50 pm - 8:30 amSTL-LHR
10h 40m1 stop
$1,480
Find Deal
Mon, Nov 4 - Thu, Nov 14
7:15 am - 8:14 pmLCY-STL
18h 59m2 stops
1:46 pm - 4:25 pmSTL-LCY
20h 39m2 stops
$1,572British Airways
Find Deal
Mon, Nov 4 - Thu, Nov 14
6:00 am - 11:30 pmLGW-STL
23h 30m2 stops
5:40 pm - 9:30 pmSTL-LGW
21h 50m2 stops
$1,823
Find Deal
Mon, Nov 4 - Thu, Nov 14
6:00 am - 9:36 pmLGW-STL
21h 36m2 stops
5:40 pm - 9:30 pmSTL-LGW
21h 50m2 stops
$4,096
Find Deal
Mon, Nov 4 - Thu, Nov 14

Lufthansa flights from London to St. Louis

Our best Lufthansa deals on London to St. Louis flight tickets
Lufthansa
Dec 4
LHR6:30 amLondon Heathrow
13h 25m
1 stop
STL1:55 pmLambert-St Louis
Dec 11
STL1:10 pmLambert-St Louis
11h 30m
1 stop
LHR6:40 amLondon Heathrow
Lufthansa
Jan 7
LHR6:00 pmLondon Heathrow
27h 06m
1 stop
STL3:06 pmLambert-St Louis
Mar 4
STL10:18 amLambert-St Louis
13h 37m
2 stops
LHR5:55 amLondon Heathrow
Lufthansa
Dec 4
LHR6:30 amLondon Heathrow
13h 25m
1 stop
STL1:55 pmLambert-St Louis
Dec 11
STL7:04 amLambert-St Louis
18h 06m
2 stops
LHR7:10 amLondon Heathrow

Air Canada flights from London to St. Louis

Our best Air Canada deals on London to St. Louis flight tickets
Air Canada
Dec 2
LHR3:00 pmLondon Heathrow
30h 06m
2 stops
STL3:06 pmLambert-St Louis
Dec 16
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow
Air Canada
Dec 5
LHR6:00 pmLondon Heathrow
27h 06m
1 stop
STL3:06 pmLambert-St Louis
Dec 9
STL3:50 pmLambert-St Louis
10h 40m
1 stop
LHR8:30 amLondon Heathrow
Air Canada
Nov 7
LHR2:30 pmLondon Heathrow
30h 36m
2 stops
STL3:06 pmLambert-St Louis
Nov 18
STL3:50 pmLambert-St Louis
33h 20m
2 stops
LHR7:10 amLondon Heathrow

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

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

November. The cheapest time of year to fly to St. Louis from London is November. 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?

In the afternoon. London to St. Louis flights are approximately 5% more expensive in the morning than in the afternoon

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

United Airlines. United Airlines, British Airways, and American Airlines are the most popular carriers operating from London to St. Louis

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 16% 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 October 2024, prices for London to St. Louis flights are approximately 1% more expensive when compared to flights at the same time last year.

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

$355

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 $355. The best round-trip flight deal from London to St. Louis found on momondo in the last 72 hours is $563.
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 Luton Airport - Lambert-St Louis Airport and London Gatwick 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 10m.

  • 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
9,240 reviews
Search United Airlines flights
British AirwaysPriceFrom $961Free CancellationRating
6.7
6,843 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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