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Cheap flights from St. Louis to London Heathrow Airport from £337

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 Heathrow Airport departing on 22/2. 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 return flights

These are some of the best return 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 stopovers.

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.
16:27 - 06:30STL-LHR
32h 03m3 stops
15:00 - 14:43LHR-STL
29h 43m3 stops
Tue, 7 Jan - Mon, 13 Jan
16:00 - 09:20STL-LHR
35h 20m2 stops
19:30 - 15:06LHR-STL
49h 36m2 stops
Fri, 25 Apr - Sun, 27 Apr
12:52 - 16:00STL-LHR
21h 08m2 stops
06:40 - 23:38LHR-STL
22h 58m2 stops
£530Scandinavian Airlines
Find Deal
Wed, 19 Feb - Mon, 24 Feb
14:55 - 11:15STL-LHR
14h 20m1 stop
06:30 - 13:55LHR-STL
13h 25m1 stop
£615United Airlines
Find Deal
Wed, 29 Jan - Fri, 7 Feb
13:30 - 12:20STL-LHR
16h 50m1 stop
06:30 - 13:30LHR-STL
13h 00m1 stop
£617United Airlines
Find Deal
Tue, 22 Apr - Fri, 2 May
13:36 - 07:20STL-LHR
11h 44m1 stop
14:10 - 22:19LHR-STL
14h 09m1 stop
£705British Airways
Find Deal
Fri, 13 Dec - Fri, 27 Dec
10:09 - 06:20STL-LHR
14h 11m1 stop
10:50 - 17:59LHR-STL
13h 09m1 stop
£729Virgin Atlantic
Find Deal
Thu, 5 Dec - Thu, 12 Dec
14:30 - 06:50STL-LHR
10h 20m1 stop
11:55 - 17:57LHR-STL
12h 02m1 stop
£739British Airways
Find Deal
Wed, 11 Dec - Sat, 28 Dec
11:25 - 06:50STL-LHR
13h 25m1 stop
10:45 - 21:25LHR-STL
16h 40m1 stop
£806KLM
Find Deal
Thu, 5 Dec - Sat, 14 Dec
10:21 - 07:05STL-LHR
14h 44m1 stop
09:10 - 22:06LHR-STL
18h 56m1 stop
£818Virgin Atlantic
Find Deal
Wed, 11 Dec - Mon, 30 Dec
12:00 - 10:50STL-LHR
16h 50m3 stops
Sat, 22 Feb
14:00 - 17:40STL-LHR
21h 40m2 stops
£339Scandinavian Airlines
Find Deal
Wed, 8 Jan
15:50 - 20:35STL-LHR
22h 45m2 stops
£347Air Canada
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Sat, 22 Feb
15:50 - 06:30STL-LHR
32h 40m1 stop
£360United Airlines
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Sat, 22 Feb
13:00 - 21:35STL-LHR
50h 35m3 stops
Sat, 4 Jan
12:55 - 07:55STL-LHR
13h 00m1 stop
£396KLM
Find Deal
Mon, 30 Dec
05:00 - 06:30STL-LHR
19h 30m2 stops
£401United Airlines
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Sun, 5 Jan
10:21 - 07:05STL-LHR
14h 44m1 stop
£452Virgin Atlantic
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Thu, 12 Dec
14:10 - 10:15STL-LHR
14h 05m2 stops
£2,153British Airways
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Wed, 5 Feb
17:35 - 11:30STL-LHR
11h 55m1 stop
£9,632British Airways
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Fri, 6 Dec
13:00 - 13:25STL-LHR
18h 25m3 stops
09:50 - 11:30LHR-STL
31h 40m3 stops
Sun, 24 Nov - Tue, 26 Nov
13:00 - 17:30STL-LHR
22h 30m3 stops
12:15 - 11:30LHR-STL
29h 15m3 stops
£1,126
Find Deal
Sun, 24 Nov - Tue, 26 Nov
13:34 - 09:35STL-LHR
14h 01m1 stop
07:35 - 08:34LHR-STL
30h 59m2 stops
£1,186
Find Deal
Sun, 24 Nov - Tue, 26 Nov
13:34 - 09:35STL-LHR
14h 01m1 stop
12:15 - 08:34LHR-STL
26h 19m2 stops
£1,211
Find Deal
Sun, 24 Nov - Tue, 26 Nov
13:09 - 16:00STL-LHR
20h 51m2 stops
19:30 - 21:03LHR-STL
31h 33m2 stops
£1,233Scandinavian Airlines
Find Deal
Sun, 24 Nov - Tue, 26 Nov
13:09 - 17:40STL-LHR
22h 31m2 stops
06:40 - 23:41LHR-STL
23h 01m2 stops
£1,271Scandinavian Airlines
Find Deal
Sun, 24 Nov - Fri, 29 Nov
16:23 - 10:35STL-LHR
12h 12m1 stop
12:20 - 20:49LHR-STL
14h 29m1 stop
£1,526KLM
Find Deal
Sat, 23 Nov - Sat, 30 Nov
07:15 - 06:50STL-LHR
17h 35m2 stops
12:20 - 20:49LHR-STL
14h 29m1 stop
£1,529Delta
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Sat, 23 Nov - Sat, 30 Nov
17:30 - 10:15STL-LHR
10h 45m1 stop
06:30 - 17:15LHR-STL
16h 45m2 stops
£1,717United Airlines
Find Deal
Sun, 24 Nov - Fri, 29 Nov
12:37 - 10:45STL-LHR
16h 08m2 stops
14:30 - 14:25LHR-STL
29h 55m2 stops
£2,755United Airlines
Find Deal
Thu, 21 Nov - Thu, 28 Nov

Scandinavian Airlines flights from St. Louis to London Heathrow Airport

Our best Scandinavian Airlines deals on St. Louis to London Heathrow Airport flight tickets
Scandinavian Airlines
19 Feb
STL12:52Lambert-St Louis
21h 08m
2 stops
LHR16:00London Heathrow
24 Feb
LHR06:40London Heathrow
22h 58m
2 stops
STL23:38Lambert-St Louis
Scandinavian Airlines
29 Jan
STL14:00Lambert-St Louis
20h 00m
2 stops
LHR16:00London Heathrow
7 Feb
LHR19:30London Heathrow
34h 07m
2 stops
STL23:37Lambert-St Louis
Scandinavian Airlines
18 Apr
STL16:00Lambert-St Louis
15h 35m
2 stops
LHR13:35London Heathrow
23 Apr
LHR18:40London Heathrow
34h 58m
2 stops
STL23:38Lambert-St Louis

United Airlines flights from St. Louis to London Heathrow Airport

Our best United Airlines deals on St. Louis to London Heathrow Airport flight tickets
United Airlines
29 Jan
STL14:55Lambert-St Louis
14h 20m
1 stop
LHR11:15London Heathrow
7 Feb
LHR06:30London Heathrow
13h 25m
1 stop
STL13:55Lambert-St Louis
United Airlines
22 Apr
STL13:30Lambert-St Louis
16h 50m
1 stop
LHR12:20London Heathrow
2 May
LHR06:30London Heathrow
13h 00m
1 stop
STL13:30Lambert-St Louis
United Airlines
28 Jan
STL06:30Lambert-St Louis
22h 45m
1 stop
LHR11:15London Heathrow
4 Feb
LHR14:30London Heathrow
30h 36m
1 stop
STL15:06Lambert-St Louis

See travel insights to London from

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

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 St. Louis to London Heathrow Airport?

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

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

Wednesday. The cheapest day of the week is usually Wednesday. The most expensive is usually Friday.

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

At midday. St. Louis to London Heathrow Airport flights are approximately 29% more expensive in the afternoon than at midday

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

55 days before. The cheapest time to buy a flight from St. Louis to London Heathrow Airport is approximately 55 days to departure

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

You could potentially save up to 7% on your flight if you consider stops on a St. Louis to London Heathrow Airport flight.

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


When to book flights from St. Louis to London Heathrow Airport

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

Cheap St. Louis to London Heathrow Airport (STL to LHR) flight deals and tips

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

Best price found

£337

Fastest flight time

10h 20m

Direct flights

None
The best one-way flight to London Heathrow Airport from St. Louis in the past 72 hours is £337. The best return flight deal from St. Louis to London Heathrow Airport found on momondo in the last 72 hours is £513.
The fastest flight from St. Louis to London Heathrow Airport takes 10h 20m
There are no direct flights from St. Louis to London Heathrow Airport. Popular non-direct route for this connection is Lambert-St Louis Airport - London Heathrow Airport.

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

    Lambert-St Louis and London Heathrow are 4185.8 mi apart from one another. By plane, this route typically takes 10h 20m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to London Heathrow Airport.

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

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


Best airlines flying from St. Louis to London Heathrow Airport

Compare and see reviews for airlines that fly from St. Louis to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £492Free CancellationRating
7.5
663 reviews
Search Virgin Atlantic flights
KLMPriceFrom £509Free CancellationRating
7.8
1,350 reviews
Search KLM flights
British AirwaysPriceFrom £520Free CancellationRating
6.6
6,837 reviews
Search British Airways flights
United AirlinesPriceFrom £538Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
American AirlinesPriceFrom £545Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from St. Louis.

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

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

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?

Yes. momondo can track prices for St. Louis to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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