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Cheap flights from London to St. Louis from $481

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 2/27. 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 - 11:31 pmLGW-STL
15h 31m1 stop
5:05 pm - 10:00 amSTL-LGW
34h 55m1 stop
Thu, Jan 23 - Sun, Jan 26
11:55 am - 11:30 amLGW-STL
29h 35m3 stops
12:15 pm - 10:55 amSTL-LGW
16h 40m3 stops
Mon, Feb 3 - Mon, Feb 17
4:15 pm - 10:17 pmLHR-STL
36h 02m2 stops
11:25 am - 7:20 amSTL-LHR
13h 55m1 stop
$703Finnair
Find Deal
Mon, Feb 3 - Mon, Feb 17
11:45 am - 10:28 pmLHR-STL
16h 43m1 stop
6:36 pm - 11:40 amSTL-LHR
11h 04m1 stop
$722Finnair
Find Deal
Wed, Jan 29 - Fri, Feb 28
10:15 am - 8:41 pmLHR-STL
16h 26m1 stop
11:04 am - 6:50 amSTL-LHR
13h 46m1 stop
$757British Airways
Find Deal
Mon, Feb 3 - Mon, Feb 17
2:30 pm - 3:06 pmLHR-STL
30h 36m1 stop
3:32 pm - 10:50 amSTL-LHR
13h 18m2 stops
$898Lufthansa
Find Deal
Tue, Feb 4 - Tue, Feb 18
8:00 am - 5:36 pmLHR-STL
15h 36m2 stops
3:32 pm - 10:50 amSTL-LHR
13h 18m2 stops
$909Lufthansa
Find Deal
Tue, Feb 4 - Tue, Feb 18
6:30 am - 1:55 pmLHR-STL
13h 25m1 stop
3:32 pm - 11:05 amSTL-LHR
13h 33m2 stops
$914United Airlines
Find Deal
Wed, Jan 22 - Thu, Feb 20
7:40 am - 5:36 pmLHR-STL
15h 56m2 stops
10:18 am - 6:40 amSTL-LHR
14h 22m2 stops
$918United Airlines
Find Deal
Wed, Jan 22 - Thu, Feb 20
7:00 pm - 8:04 pmLCY-STL
31h 04m2 stops
11:39 am - 7:55 amSTL-LCY
38h 16m2 stops
$1,239British Airways
Find Deal
Fri, May 2 - Sat, May 17
2:50 pm - 11:43 pmLHR-STL
38h 53m3 stops
Thu, Feb 27
2:50 pm - 11:36 pmLHR-STL
38h 46m2 stops
$502WestJet
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Tue, Feb 25
2:50 pm - 6:01 pmLHR-STL
33h 11m2 stops
$506WestJet
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Thu, Feb 27
8:15 am - 2:23 pmLHR-STL
35h 08m2 stops
$839TAP AIR PORTUGAL
Find Deal
Sun, Mar 23
11:55 am - 9:40 pmLHR-STL
14h 45m1 stop
$864Iberia
Find Deal
Tue, Mar 25
7:35 pm - 10:19 pmLGW-STL
31h 44m3 stops
$1,044Iberia
Find Deal
Tue, Mar 25
4:55 pm - 2:36 pmLGW-STL
27h 41m2 stops
$1,076Turkish Airlines
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Tue, Feb 25
5:50 am - 2:23 pmLGW-STL
37h 33m2 stops
$1,083Turkish Airlines
Find Deal
Sun, Mar 23
7:20 am - 10:28 pmLHR-STL
21h 08m2 stops
$1,775British Airways
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Sun, Jan 5
10:55 am - 9:23 pmSTN-STL
40h 28m2 stops
$1,799British Airways
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Sun, Apr 13
12:30 pm - 11:27 pmLHR-STL
16h 57m1 stop
2:27 pm - 9:15 amSTL-LHR
12h 48m1 stop
$1,241Finnair
Find Deal
Thu, Dec 26 - Tue, Dec 31
10:25 am - 12:10 pmLHR-STL
31h 45m3 stops
12:15 pm - 5:20 pmSTL-LHR
23h 05m3 stops
$1,293
Find Deal
Thu, Dec 26 - Tue, Dec 31
12:35 pm - 10:48 pmLHR-STL
16h 13m1 stop
1:45 pm - 12:05 pmSTL-LHR
16h 20m1 stop
$1,328Finnair
Find Deal
Thu, Dec 26 - Tue, Dec 31
12:35 pm - 10:48 pmLHR-STL
16h 13m1 stop
1:45 pm - 12:05 pmSTL-LHR
16h 20m1 stop
$1,362Finnair
Find Deal
Thu, Dec 26 - Tue, Dec 31
11:30 am - 9:35 pmLHR-STL
16h 05m2 stops
10:13 am - 6:50 amSTL-LHR
14h 37m1 stop
$1,389Virgin Atlantic
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Thu, Dec 26 - Tue, Dec 31
6:00 pm - 9:54 amLHR-STL
21h 54m2 stops
6:25 am - 5:55 amSTL-LHR
17h 30m2 stops
$1,522Lufthansa
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Thu, Dec 26 - Tue, Dec 31
4:20 pm - 10:47 amLHR-STL
24h 27m2 stops
8:30 am - 5:55 amSTL-LHR
15h 25m2 stops
$1,546Lufthansa
Find Deal
Thu, Dec 26 - Tue, Dec 31
9:10 am - 10:28 pmLCY-STL
19h 18m2 stops
5:45 am - 11:00 amSTL-LCY
23h 15m2 stops
$2,093Aer Lingus
Find Deal
Thu, Dec 26 - Tue, Dec 31
3:00 pm - 10:19 pmLCY-STL
37h 19m2 stops
5:45 am - 12:40 pmSTL-LCY
24h 55m2 stops
$2,107Aer Lingus
Find Deal
Thu, Dec 26 - Tue, Dec 31
4:55 pm - 3:42 pmLGW-STL
52h 47m2 stops
5:33 pm - 9:30 pmSTL-LGW
21h 57m2 stops
$2,404Turkish Airlines
Find Deal
Thu, Dec 26 - Tue, Dec 31

Finnair flights from London to St. Louis

Our best Finnair deals on London to St. Louis flight tickets
Finnair
Feb 3
LHR4:15 pmLondon Heathrow
36h 02m
2 stops
STL10:17 pmLambert-St Louis
Feb 17
STL11:25 amLambert-St Louis
13h 55m
1 stop
LHR7:20 amLondon Heathrow
Finnair
Jan 29
LHR11:45 amLondon Heathrow
16h 43m
1 stop
STL10:28 pmLambert-St Louis
Feb 28
STL6:36 pmLambert-St Louis
11h 04m
1 stop
LHR11:40 amLondon Heathrow
Finnair
Jan 16
LHR12:35 pmLondon Heathrow
15h 53m
1 stop
STL10:28 pmLambert-St Louis
Jan 30
STL3:10 pmLambert-St Louis
14h 30m
1 stop
LHR11:40 amLondon Heathrow

Lufthansa flights from London to St. Louis

Our best Lufthansa deals on London to St. Louis flight tickets
Lufthansa
Feb 4
LHR2:30 pmLondon Heathrow
30h 36m
1 stop
STL3:06 pmLambert-St Louis
Feb 18
STL3:32 pmLambert-St Louis
13h 18m
2 stops
LHR10:50 amLondon Heathrow
Lufthansa
Feb 4
LHR8:00 amLondon Heathrow
15h 36m
2 stops
STL5:36 pmLambert-St Louis
Feb 18
STL3:32 pmLambert-St Louis
13h 18m
2 stops
LHR10:50 amLondon Heathrow
Lufthansa
Jan 29
LHR3:10 pmLondon Heathrow
25h 44m
2 stops
STL10:54 amLambert-St Louis
Feb 28
STL10:18 amLambert-St Louis
13h 37m
2 stops
LHR5:55 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 typical price of a round-trip flight between London and St. Louis?

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

In general, January is the cheapest month to fly from London to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $729. The month of February is another great option to travel to St. Louis, with average flight prices from London averaging around $755.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $952. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,371. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from London at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,075 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,229 per ticket.

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from London is 56 days out, which is when prices tend to be around $891. In the past 72 hours, momondo users found flights from London to St. Louis for as low as $654.

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

You could potentially save up to 35% 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 December 2024, prices for London to St. Louis flights are approximately 0% 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

$481

Fastest flight time

13h 00m

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 $481. The best round-trip flight deal from London to St. Louis found on momondo in the last 72 hours is $539.
The fastest flight from London to St. Louis takes 13h 00m
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 $867Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
British AirwaysPriceFrom $961Free CancellationRating
6.6
6,815 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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