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Cheap flights from St. Louis to London from £291

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 departing on 22/9. 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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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.
Iberia Logo
18:10 - 12:30STL-LHR
12h 20m1 stop
Iberia Logo
13:30 - 20:13LHR-STL
12h 43m1 stop
£509Iberia
Find Deal
Wed, 20 Aug - Wed, 27 Aug
British Airways Logo
13:37 - 07:20STL-LHR
11h 43m1 stop
British Airways Logo
12:30 - 19:08LHR-STL
12h 38m1 stop
£510British Airways
Find Deal
Wed, 20 Aug - Wed, 27 Aug
Finnair Logo
14:01 - 12:30STL-LHR
16h 29m1 stop
Finnair Logo
18:10 - 18:21LHR-STL
30h 11m2 stops
£513Finnair
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Iberia Logo
09:42 - 06:20STL-LHR
15h 38m1 stop
Iberia Logo
19:40 - 21:41LHR-STL
32h 01m2 stops
£522Iberia
Find Deal
Tue, 28 Oct - Tue, 11 Nov
Delta Logo
15:30 - 11:10STL-LHR
13h 40m1 stop
Delta Logo
11:30 - 23:39LHR-STL
18h 09m2 stops
£523Delta
Find Deal
Wed, 20 Aug - Wed, 27 Aug
Air Canada Logo
13:30 - 06:30STL-LHR
11h 00m1 stop
Air Canada Logo
14:05 - 14:19LHR-STL
30h 14m2 stops
£540Air Canada
Find Deal
Tue, 23 Sep - Wed, 1 Oct
Air Canada Logo
13:30 - 06:30STL-LHR
11h 00m1 stop
Air Canada Logo
14:05 - 12:25LHR-STL
28h 20m2 stops
£540Air Canada
Find Deal
Wed, 20 Aug - Wed, 27 Aug
Finnair Logo
10:36 - 10:50STL-LHR
18h 14m1 stop
Finnair Logo
12:15 - 21:52LHR-STL
15h 37m1 stop
£641Finnair
Find Deal
Wed, 14 May - Wed, 21 May
KLM Logo
13:09 - 06:45STL-LHR
11h 36m1 stop
KLM Logo
09:20 - 16:25LHR-STL
13h 05m1 stop
£732KLM
Find Deal
Thu, 15 May - Sun, 15 Jun
Virgin Atlantic Logo
15:40 - 11:25STL-LHR
13h 45m2 stops
Virgin Atlantic Logo
11:20 - 23:51LHR-STL
18h 31m1 stop
£736Virgin Atlantic
Find Deal
Thu, 15 May - Sun, 15 Jun

British Airways flights from St. Louis to London Heathrow Airport

Our best British Airways deals on St. Louis to London Heathrow Airport flight tickets
British Airways
20 Aug
STL13:37Lambert-St Louis
11h 43m
1 stop
LHR07:20London Heathrow
27 Aug
LHR12:30London Heathrow
12h 38m
1 stop
STL19:08Lambert-St Louis
British Airways
30 Jul
STL13:16Lambert-St Louis
12h 39m
1 stop
LHR07:55London Heathrow
13 Aug
LHR12:30London Heathrow
13h 49m
1 stop
STL20:19Lambert-St Louis
British Airways
11 Oct
STL18:05Lambert-St Louis
30h 20m
1 stop
LHR06:25London Heathrow
21 Oct
LHR09:15London Heathrow
15h 53m
1 stop
STL19:08Lambert-St Louis

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
14 Aug
STL15:30Lambert-St Louis
18h 30m
2 stops
LHR16:00London Heathrow
20 Aug
LHR06:40London Heathrow
22h 59m
2 stops
STL23:39Lambert-St Louis
Scandinavian Airlines
14 Oct
STL15:30Lambert-St Louis
18h 30m
2 stops
LHR16:00London Heathrow
22 Oct
LHR07:05London Heathrow
22h 34m
3 stops
STL23:39Lambert-St Louis
Scandinavian Airlines
20 Aug
STL13:30Lambert-St Louis
26h 10m
2 stops
LHR21:40London Heathrow
27 Aug
LHR21:05London Heathrow
29h 42m
3 stops
STL20:47Lambert-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 typical price of a round-trip flight between St. Louis and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from St. Louis to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £602. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from St. Louis averaging around £620.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as £557. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £1,322.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from St. Louis to London Heathrow Airport in the morning for as low as £673. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £834 on average. Flights to London Heathrow Airport from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from St. Louis when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £715 when searching 9 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from St. Louis for as low as £602 on momondo.

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

£291

Fastest flight time

10h 05m

Direct flights

None
The best one-way flight to London Heathrow Airport from St. Louis in the past 72 hours is £291. The best return flight deal from St. Louis to London Heathrow Airport found on momondo in the last 72 hours is £509.
The fastest flight from St. Louis to London Heathrow Airport takes 10h 05m
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 05m.

  • 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
Air CanadaPriceFrom £500Free CancellationRating
7.0
9,252 reviews
Search Air Canada flights
British AirwaysPriceFrom £502Free CancellationRating
6.6
6,845 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £526Free CancellationRating
7.4
643 reviews
Search Virgin Atlantic flights
KLMPriceFrom £533Free CancellationRating
7.8
1,334 reviews
Search KLM flights
American AirlinesPriceFrom £586Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Slough
Southend-on-Sea
Stratford-upon-Avon
Swindon
Northampton
Maidstone
Gatwick
Ipswich
Canterbury
Margate
Ilford
Dartford
Hounslow
Salisbury
Colchester
Guildford
Worthing

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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