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Cheap flights from London Heathrow Airport to St. Louis from £302

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 Heathrow Airport to St. Louis departing on 28/4. 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 Heathrow Airport to St. Louis

Cheap return flights

These are some of the best return flight deals from London Heathrow Airport 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 Heathrow Airport to St. Louis.

Cheap last-minute flights

Planning a quick getaway from London Heathrow Airport 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 Heathrow Airport to St. Louis

Find recent round-trip train or bus tickets from London Heathrow Airport to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
11:15 - 23:57LHR-STL
18h 42m1 stop
05:17 - 07:20STL-LHR
20h 03m1 stop
£504Finnair
Find Deal
sam., 16 nov. - jeu., 21 nov.
14:30 - 23:57LHR-STL
15h 27m1 stop
14:15 - 09:15STL-LHR
13h 00m1 stop
£516Finnair
Find Deal
mer., 4 déc. - mer., 11 déc.
15:45 - 22:05LHR-STL
12h 20m1 stop
16:44 - 08:15STL-LHR
33h 31m1 stop
£527Finnair
Find Deal
mer., 11 déc. - mer., 8 janv.
06:30 - 13:55LHR-STL
13h 25m1 stop
13:10 - 06:40STL-LHR
11h 30m1 stop
£786Lufthansa
Find Deal
mer., 4 déc. - mer., 11 déc.
06:30 - 13:55LHR-STL
13h 25m1 stop
08:25 - 07:10STL-LHR
16h 45m2 stops
£787Lufthansa
Find Deal
mer., 4 déc. - mer., 11 déc.
15:00 - 12:16LHR-STL
27h 16m2 stops
13:03 - 07:55STL-LHR
12h 52m1 stop
£799United Airlines
Find Deal
mer., 22 janv. - jeu., 20 févr.
06:30 - 13:55LHR-STL
13h 25m1 stop
17:33 - 10:15STL-LHR
10h 42m1 stop
£806United Airlines
Find Deal
mer., 22 janv. - jeu., 20 févr.
11:45 - 21:08LHR-STL
15h 23m2 stops
10:24 - 06:50STL-LHR
14h 26m2 stops
£851Virgin Atlantic
Find Deal
jeu., 6 févr. - mar., 18 févr.
12:25 - 23:43LHR-STL
17h 18m2 stops
12:00 - 07:15STL-LHR
13h 15m2 stops
£922Virgin Atlantic
Find Deal
mar., 17 déc. - mar., 7 janv.
14:05 - 21:53LHR-STL
37h 48m2 stops
17:29 - 19:25STL-LHR
43h 56m2 stops
£955British Airways
Find Deal
lun., 16 déc. - lun., 23 déc.
06:50 - 07:07LHR-STL
30h 17m3 stops
lun., 28 avr.
14:50 - 23:28LHR-STL
38h 38m3 stops
ven., 17 janv.
14:50 - 17:37LHR-STL
32h 47m3 stops
£404WestJet
Find Deal
mer., 27 nov.
11:15 - 23:57LHR-STL
18h 42m1 stop
£707Finnair
Find Deal
ven., 22 nov.
13:50 - 22:20LHR-STL
14h 30m1 stop
£738British Airways
Find Deal
sam., 22 févr.
06:30 - 13:55LHR-STL
13h 25m1 stop
£1,334Lufthansa
Find Deal
mer., 5 mars
16:00 - 23:32LHR-STL
13h 32m1 stop
£1,347Lufthansa
Find Deal
mar., 4 mars
08:20 - 20:05LHR-STL
17h 45m2 stops
£1,383British Airways
Find Deal
jeu., 6 mars
07:10 - 23:43LHR-STL
22h 33m3 stops
£1,389United Airlines
Find Deal
dim., 23 févr.
15:00 - 23:43LHR-STL
38h 43m3 stops
£1,392United Airlines
Find Deal
sam., 22 févr.
10:00 - 22:53LHR-STL
18h 53m1 stop
18:34 - 12:00STL-LHR
11h 26m1 stop
£877Finnair
Find Deal
lun., 4 nov. - jeu., 14 nov.
11:15 - 22:53LHR-STL
17h 38m1 stop
13:46 - 09:20STL-LHR
13h 34m1 stop
£895Finnair
Find Deal
lun., 4 nov. - jeu., 14 nov.
09:30 - 15:06LHR-STL
35h 36m2 stops
15:50 - 06:30STL-LHR
32h 40m1 stop
£1,140
Find Deal
lun., 4 nov. - jeu., 14 nov.
10:30 - 15:06LHR-STL
34h 36m2 stops
15:50 - 08:30STL-LHR
10h 40m1 stop
£1,144
Find Deal
lun., 4 nov. - jeu., 14 nov.
09:50 - 21:44LHR-STL
17h 54m2 stops
17:19 - 08:05STL-LHR
32h 46m2 stops
£1,365Aer Lingus
Find Deal
lun., 4 nov. - mer., 6 nov.
22:35 - 15:39LHR-STL
23h 04m2 stops
17:19 - 11:30STL-LHR
12h 11m1 stop
£1,625
Find Deal
lun., 4 nov. - mer., 6 nov.
11:00 - 18:05LHR-STL
13h 05m1 stop
17:31 - 06:20STL-LHR
30h 49m1 stop
£1,991Iberia
Find Deal
lun., 4 nov. - mer., 6 nov.
06:40 - 23:40LHR-STL
23h 00m2 stops
12:58 - 21:35STL-LHR
26h 37m3 stops
£2,350Scandinavian Airlines
Find Deal
lun., 4 nov. - mer., 6 nov.

Finnair flights from London Heathrow Airport to St. Louis

Our best Finnair deals on London Heathrow Airport to St. Louis flight tickets
Finnair
16 Nov
LHR11:15London Heathrow
18h 42m
1 stop
STL23:57Lambert-St Louis
21 Nov
STL05:17Lambert-St Louis
20h 03m
1 stop
LHR07:20London Heathrow
Finnair
4 Dec
LHR14:30London Heathrow
15h 27m
1 stop
STL23:57Lambert-St Louis
11 Dec
STL14:15Lambert-St Louis
13h 00m
1 stop
LHR09:15London Heathrow
Finnair
11 Dec
LHR15:45London Heathrow
12h 20m
1 stop
STL22:05Lambert-St Louis
8 Jan
STL16:44Lambert-St Louis
33h 31m
1 stop
LHR08:15London Heathrow

Lufthansa flights from London Heathrow Airport to St. Louis

Our best Lufthansa deals on London Heathrow Airport to St. Louis flight tickets
Lufthansa
4 Dec
LHR06:30London Heathrow
13h 25m
1 stop
STL13:55Lambert-St Louis
11 Dec
STL13:10Lambert-St Louis
11h 30m
1 stop
LHR06:40London Heathrow
Lufthansa
4 Dec
LHR06:30London Heathrow
13h 25m
1 stop
STL13:55Lambert-St Louis
11 Dec
STL08:25Lambert-St Louis
16h 45m
2 stops
LHR07:10London Heathrow
Lufthansa
4 Dec
LHR06:30London Heathrow
13h 25m
1 stop
STL13:55Lambert-St Louis
11 Dec
STL07:04Lambert-St Louis
18h 06m
2 stops
LHR07:10London Heathrow

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

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

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

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

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

In the evening. London Heathrow Airport to St. Louis flights are approximately 13% more expensive in the morning than in the evening

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

Finnair. Finnair, Iberia, and United Airlines are the most popular carriers operating from London Heathrow Airport to St. Louis

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

15 days before. The cheapest time to buy a flight from London Heathrow Airport to St. Louis is approximately 15 days to departure

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

You could potentially save up to 41% on your flight if you consider stops on a London Heathrow Airport to St. Louis flight.

How have London Heathrow Airport to St. Louis flight prices changed over time?

As of November 2024, prices for London Heathrow Airport to St. Louis flights are approximately 3% more expensive when compared to flights at the same time last year.

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

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

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

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

Best price found

£302

Fastest flight time

11h 49m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from London Heathrow Airport in the past 72 hours is £302. The best return flight deal from London Heathrow Airport to St. Louis found on momondo in the last 72 hours is £504.
The fastest flight from London Heathrow Airport to St. Louis takes 11h 49m
There are no direct flights from London Heathrow Airport to St. Louis. Popular non-direct route for this connection is London Heathrow Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    The distance between London Heathrow and Lambert-St Louis is about 4185.8 mi. A reasonable flight in good conditions will take 12h 20m.

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

    Prices for flights from London Heathrow Airport to Lambert-St Louis Airport are refreshed on a daily basis.

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

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

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from London Heathrow Airport to St. Louis?


Best airlines flying from London Heathrow Airport to St. Louis

Compare and see reviews for airlines that fly from London Heathrow Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £450Free CancellationRating
7.4
9,240 reviews
Search United Airlines flights
Air CanadaPriceFrom £451Free CancellationRating
7.0
8,101 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom £459Free CancellationRating
7.6
666 reviews
Search Virgin Atlantic flights
FinnairPriceFrom £475Free CancellationRating
7.7
1,318 reviews
Search Finnair flights
LufthansaPriceFrom £493Free CancellationRating
6.8
7,178 reviews
Search Lufthansa flights
IberiaPriceFrom £548Free CancellationRating
7.0
2,670 reviews
Search Iberia flights
British AirwaysPriceFrom £613Free 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?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to St. Louis for you.

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

momondo does allow users to show only those flights to St. Louis from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to St. Louis from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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