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Cheap flights from London to St. Louis from £329

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 17/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London to St. Louis

Cheap return flights

These are some of the best return 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 stopovers.

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.
14:00 - 23:31LGW-STL
15h 31m1 stop
17:05 - 10:00STL-LGW
34h 55m1 stop
Thu, 23 Jan - Sun, 26 Jan
14:00 - 23:31LGW-STL
15h 31m1 stop
20:31 - 10:00STL-LGW
31h 29m2 stops
Thu, 23 Jan - Sun, 26 Jan
16:15 - 22:17LHR-STL
36h 02m2 stops
13:40 - 12:05STL-LHR
16h 25m1 stop
£649Finnair
Find Deal
Mon, 20 Jan - Fri, 24 Jan
15:10 - 23:30LHR-STL
14h 20m1 stop
17:30 - 11:15STL-LHR
11h 45m1 stop
£806Lufthansa
Find Deal
Wed, 15 Jan - Wed, 22 Jan
11:10 - 15:06LHR-STL
33h 56m1 stop
10:18 - 05:55STL-LHR
13h 37m2 stops
£808Lufthansa
Find Deal
Wed, 29 Jan - Fri, 28 Feb
08:40 - 18:20LHR-STL
15h 40m1 stop
18:23 - 10:20STL-LHR
9h 57m1 stop
£819Finnair
Find Deal
Fri, 2 May - Sat, 17 May
11:45 - 21:49LHR-STL
16h 04m2 stops
14:00 - 11:40STL-LHR
15h 40m1 stop
£822Virgin Atlantic
Find Deal
Mon, 20 Jan - Mon, 3 Feb
08:50 - 22:13LHR-STL
18h 23m2 stops
17:30 - 12:15STL-LHR
12h 45m1 stop
£958Virgin Atlantic
Find Deal
Fri, 28 Mar - Fri, 25 Apr
10:15 - 20:59LHR-STL
16h 44m1 stop
15:10 - 08:15STL-LHR
11h 05m1 stop
£1,181British Airways
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Sat, 4 Jan - Sat, 11 Jan
08:15 - 20:59LHR-STL
18h 44m2 stops
18:00 - 08:15STL-LHR
32h 15m1 stop
£1,318British Airways
Find Deal
Sat, 4 Jan - Sat, 11 Jan
13:35 - 14:43LTN-STL
55h 08m3 stops
Fri, 17 Jan
14:50 - 23:36LHR-STL
38h 46m2 stops
£398WestJet
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Tue, 25 Feb
07:15 - 23:59LHR-STL
45h 44m3 stops
Mon, 24 Mar
11:55 - 21:40LHR-STL
14h 45m1 stop
£682Iberia
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Tue, 25 Mar
12:15 - 18:04LHR-STL
11h 49m1 stop
£685British Airways
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Sun, 13 Apr
09:20 - 20:33LCY-STL
17h 13m2 stops
£704Virgin Atlantic
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Wed, 30 Apr
11:45 - 20:33LHR-STL
14h 48m1 stop
£705Virgin Atlantic
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Wed, 30 Apr
11:55 - 21:40LHR-STL
14h 45m1 stop
£752Iberia
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Mon, 24 Mar
07:30 - 20:23LHR-STL
18h 53m2 stops
£1,257Lufthansa
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Sun, 5 Jan
06:30 - 20:23LHR-STL
19h 53m2 stops
£1,261Lufthansa
Find Deal
Sun, 5 Jan
19:25 - 17:51LHR-STL
28h 26m2 stops
07:00 - 20:35STL-LHR
31h 35m1 stop
£1,512Austrian Airlines
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Sun, 22 Dec - Sun, 29 Dec
09:30 - 15:06LHR-STL
35h 36m2 stops
15:50 - 07:10STL-LHR
33h 20m2 stops
£1,544
Find Deal
Sun, 22 Dec - Sun, 29 Dec
16:00 - 20:11LHR-STL
34h 11m1 stop
07:00 - 20:35STL-LHR
31h 35m1 stop
£1,545Austrian Airlines
Find Deal
Sun, 22 Dec - Sun, 29 Dec
08:45 - 21:45LHR-STL
19h 00m2 stops
15:10 - 11:15STL-LHR
14h 05m1 stop
£1,560United Airlines
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Sat, 21 Dec - Sat, 28 Dec
12:30 - 08:50LGW-STL
26h 20m2 stops
07:30 - 07:30STL-LGW
18h 00m2 stops
£1,560American Airlines
Find Deal
Sun, 22 Dec - Sun, 29 Dec
06:50 - 15:47LHR-STL
14h 57m2 stops
15:50 - 08:30STL-LHR
10h 40m1 stop
£1,563United Airlines
Find Deal
Sun, 22 Dec - Sun, 29 Dec
13:35 - 21:45LHR-STL
14h 10m1 stop
11:30 - 11:15STL-LHR
17h 45m1 stop
£1,566
Find Deal
Sat, 21 Dec - Sat, 28 Dec
08:55 - 21:42LHR-STL
18h 47m2 stops
07:15 - 06:50STL-LHR
17h 35m2 stops
£1,578Delta
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Sun, 22 Dec - Sun, 29 Dec
09:10 - 21:43LHR-STL
18h 33m2 stops
06:04 - 06:50STL-LHR
18h 46m2 stops
£1,584Delta
Find Deal
Sat, 21 Dec - Sat, 28 Dec
10:15 - 20:59LHR-STL
16h 44m1 stop
12:15 - 11:40STL-LHR
17h 25m1 stop
£1,767Finnair
Find Deal
Fri, 20 Dec - Sat, 4 Jan

Virgin Atlantic flights from London to St. Louis

Our best Virgin Atlantic deals on London to St. Louis flight tickets
Virgin Atlantic
20 Jan
LHR11:45London Heathrow
16h 04m
2 stops
STL21:49Lambert-St Louis
3 Feb
STL14:00Lambert-St Louis
15h 40m
1 stop
LHR11:40London Heathrow
Virgin Atlantic
28 Mar
LHR08:50London Heathrow
18h 23m
2 stops
STL22:13Lambert-St Louis
25 Apr
STL17:30Lambert-St Louis
12h 45m
1 stop
LHR12:15London Heathrow
Virgin Atlantic
11 Jun
LHR13:40London Heathrow
15h 59m
2 stops
STL23:39Lambert-St Louis
25 Jun
STL10:45Lambert-St Louis
14h 00m
2 stops
LHR06:45London Heathrow

Air Canada flights from London to St. Louis

Our best Air Canada deals on London to St. Louis flight tickets
Air Canada
9 Jun
LHR06:50London Heathrow
14h 26m
2 stops
STL15:16Lambert-St Louis
26 Jun
STL13:30Lambert-St Louis
14h 30m
1 stop
LHR10:00London Heathrow
Air Canada
12 Jun
LHR06:50London Heathrow
14h 26m
2 stops
STL15:16Lambert-St Louis
26 Jun
STL13:30Lambert-St Louis
14h 30m
1 stop
LHR10:00London Heathrow
Air Canada
12 Jun
LHR06:50London Heathrow
14h 26m
2 stops
STL15:16Lambert-St Louis
22 Jun
STL13:30Lambert-St Louis
11h 00m
1 stop
LHR06:30London 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 to St. Louis?

The month of January is, on average, the cheapest month to fly to St. Louis from London, with most prices found around £575. If you’re not able to fly to St. Louis in January, then February is your next best option. Flight prices from London to St. Louis during February average around £595.

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

Our data shows that Wednesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £637. Flights from London to St. Louis on a Sunday will generally be more expensive and average around £758. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest London to St. Louis flights are usually those with departure times in the evening. Our users have found flights to St. Louis in the evening for as low as £593. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £698.

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

Most flyers found that booking tickets 56 days in advance of their planned departure date is the best time to get cheap flights to St. Louis. During this timeframe, flight prices are around £702. Keep in mind that you might also find cheap flights to St. Louis outside of this time window. In fact, momondo users recently found flights from London to St. Louis for £407.

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

You could potentially save up to 12% 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 return 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

£329

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 £329. The best return flight deal from London to St. Louis found on momondo in the last 72 hours is £420.
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 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?

    The distance between London and Lambert-St Louis is about 4197.7 mi. Flights usually cover this in 11h 56m, depending on flying conditions and air traffic around both airports.

  • 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 updated daily.

  • 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 necessary travel and health documents for your Lambert-St Louis 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.

  • 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
Air CanadaPriceFrom £460Free CancellationRating
7.0
8,391 reviews
Search Air Canada flights
United AirlinesPriceFrom £493Free CancellationRating
7.4
9,048 reviews
Search United Airlines flights
FinnairPriceFrom £501Free CancellationRating
7.7
1,285 reviews
Search Finnair flights
IberiaPriceFrom £559Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
British AirwaysPriceFrom £640Free CancellationRating
6.6
6,817 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £672Free CancellationRating
7.5
668 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom £716Free CancellationRating
6.8
7,087 reviews
Search Lufthansa 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. momondo allows you to filter the results for London to St. Louis flights to just show those with flexible booking policies.

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

Once you have performed a search for London to St. Louis 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 London to St. Louis right now. Can momondo alert me if prices change?

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


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