Cheap flights from St. Louis to London Heathrow Airport from $356

Round-trip
1 adult
Economy
0 bags
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Tue 8/16
Tue 8/23

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Flight information for St. Louis to London Heathrow Airport
(STL to LHR)

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

Best Price Found

$356

Fastest flight time

10h 47m

Direct flights

None
The best one-way flight to London Heathrow Airport from St. Louis in the past 72 hours is $356. The best round-trip flight deal from St. Louis to London Heathrow Airport found on momondo in the last 72 hours is $709.
The fastest flight from St. Louis to London Heathrow Airport takes 10h 47m
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 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. Most expensive is July

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

Juneyao Airlines

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

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

23 days before

The cheapest time to buy a flight from St. Louis to London Heathrow Airport is approximately 23 days to departure

When traveling from St. Louis to London, the most popular airport to fly into is London Heathrow Airport. The majority of travelers flying into London Heathrow Airport from St. Louis are departing from Lambert-St Louis Airport. You may be looking for an airport near Lambert-St Louis Airport to depart from when traveling to London and Springfield Capital Airport, located in Springfield is a great option. The cheapest route from St. Louis to London is STL — LHR with an average price of $709 RT during the month of August.

Lambert-St Louis Airport (STL) to London Heathrow Airport (LHR)$709
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Springfield Capital Airport (SPI) to London Heathrow Airport (LHR)$802
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Easily compare round-trip flights from St. Louis to London Heathrow Airport

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to London Heathrow Airport by changing tabs
Air Canada
Oct 31
STL12:00 pmLambert-St Louis
13h 10m
1 stop
LHR1:10 amLondon Heathrow
Nov 15
LHR9:30 amLondon Heathrow
12h 57m
1 stop
STL10:27 pmLambert-St Louis
Virgin Atlantic
Oct 31
STL12:14 pmLambert-St Louis
12h 46m
2 stops
LHR1:00 amLondon Heathrow
Nov 15
LHR4:40 amLondon Heathrow
19h 19m
2 stops
STL11:59 pmLambert-St Louis
Finnair
Nov 1
STL8:01 amLambert-St Louis
13h 19m
1 stop
LHR9:20 pmLondon Heathrow
Nov 8
LHR5:20 amLondon Heathrow
16h 17m
2 stops
STL9:37 pmLambert-St Louis
British Airways
Sep 21
STL2:10 amLambert-St Louis
10h 00m
1 stop
LHR12:10 pmLondon Heathrow
Sep 26
LHR5:00 pmLondon Heathrow
25h 09m
2 stops
STL6:09 pmLambert-St Louis
Multiple Airlines
Oct 12
STL11:40 amLambert-St Louis
10h 55m
1 stop
LHR10:35 pmLondon Heathrow
Oct 26
LHR3:25 amLondon Heathrow
18h 04m
2 stops
STL9:29 pmLambert-St Louis
American Airlines
Nov 29
STL7:40 amLambert-St Louis
12h 20m
2 stops
LHR8:00 pmLondon Heathrow
Dec 7
LHR1:20 amLondon Heathrow
17h 39m
2 stops
STL6:59 pmLambert-St Louis

Find the cheapest one-way flights from St. Louis to London Heathrow Airport

If you're looking for one-way flights from St. Louis to London Heathrow Airport, view some of our deals below provided by British Airways, Finnair and Iberia
Multiple Airlines
Sep 23
STL1:15 pmLambert-St Louis
39h 20m
2 stops
LHR4:35 amLondon Heathrow
Scandinavian Airlines
Oct 4
STL8:02 amLambert-St Louis
20h 33m
2 stops
LHR4:35 amLondon Heathrow
Iberia
Dec 13
STL6:46 amLambert-St Louis
13h 04m
1 stop
LHR7:50 pmLondon Heathrow

Search last-minute flights to London Heathrow Airport from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to London Heathrow Airport
Multiple Airlines
Aug 17
STL7:00 amLambert-St Louis
15h 30m
1 stop
LHR10:30 pmLondon Heathrow
Aug 29
LHR2:50 amLondon Heathrow
22h 23m
2 stops
STL1:13 amLambert-St Louis
American Airlines
Aug 19
STL3:59 amLambert-St Louis
16h 51m
1 stop
LHR8:50 pmLondon Heathrow
Sep 5
LHR3:45 amLondon Heathrow
14h 26m
1 stop
STL6:11 pmLambert-St Louis
Aer Lingus
Aug 19
STL1:07 pmLambert-St Louis
32h 53m
2 stops
LHR10:00 pmLondon Heathrow
Sep 5
LHR2:40 amLondon Heathrow
22h 33m
2 stops
STL1:13 amLambert-St Louis
Scandinavian Airlines
Aug 17
STL4:35 amLambert-St Louis
25h 25m
2 stops
LHR6:00 amLondon Heathrow
Aug 29
LHR2:45 amLondon Heathrow
44h 59m
2 stops
STL11:44 pmLambert-St Louis
Air France
Aug 17
STL6:02 amLambert-St Louis
15h 03m
1 stop
LHR9:05 pmLondon Heathrow
Aug 29
LHR10:05 amLondon Heathrow
15h 34m
1 stop
STL1:39 amLambert-St Louis
Air Canada
Aug 17
STL12:10 pmLambert-St Louis
13h 40m
1 stop
LHR1:50 amLondon Heathrow
Aug 21
LHR9:25 amLondon Heathrow
32h 06m
2 stops
STL5:31 pmLambert-St Louis

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
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $15Free CancellationRating
0.0
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Brussels AirlinesPriceFrom $351Free CancellationRating
6.7
6.9

Boarding

7.0

Comfort

7.6

Crew

6.3

Entertainment

6.0

Food

Reviews

Boarding was a chaotic crowd push that was poorly managed. Once on board crew and all aspects of flight were excellent

1 / 10
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American AirlinesPriceFrom $381Free CancellationRating
6.9
7.3

Boarding

7.1

Comfort

7.9

Crew

6.8

Entertainment

6.3

Food

Reviews

Power charge not working on my row. Could not use phone properly on trip during it. 35 minute taxiing upon arrival. 35 minute departure delay. 20 minute boarding delay.

1 / 10
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Virgin AtlanticPriceFrom $430Free CancellationRating
7.2
7.2

Boarding

7.0

Comfort

7.8

Crew

7.2

Entertainment

6.6

Food

Reviews

Long delay at LAX Seat had no armrest Food poor Short staffed so service on board limited. Very disappointed but at least our luggage arrived quickly as I had another flight to catch

1 / 10
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FinnairPriceFrom $442Free CancellationRating
7.7
7.9

Boarding

7.7

Comfort

8.2

Crew

7.2

Entertainment

7.2

Food

Reviews

I’m a bigger guy and I had wiggle room and could fully stretch my legs in economy plus. We were very happy with this flight.

1 / 10
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United AirlinesPriceFrom $524Free CancellationRating
7.1
7.5

Boarding

7.0

Comfort

8.0

Crew

6.9

Entertainment

6.4

Food

Reviews

We traveled economy, which was comfortable. Monetization of seats and baggage is annoying.

1 / 10
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IberiaPriceFrom $603Free CancellationRating
7.0
7.2

Boarding

6.8

Comfort

7.6

Crew

6.6

Entertainment

6.3

Food

Reviews

They lost our suitcase

1 / 10
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KLMPriceFrom $619Free CancellationRating
7.6
7.5

Boarding

7.6

Comfort

8.2

Crew

6.6

Entertainment

7.0

Food

Reviews

Voir avis précédent qui regroupe les deux vols

1 / 10
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British AirwaysPriceFrom $622Free CancellationRating
6.3
6.6

Boarding

6.5

Comfort

7.2

Crew

6.2

Entertainment

5.9

Food

Reviews

The flight, plane and flight crew were great! The flight itself was not a problem at all. The HUGE issue was the mess at Heathrow airport. It was mass chaos, no direction or aisles for the connecting flights customers. Hundreds of people were trying to get through the boarding pass scanning to get to security. We were traveling with two children and after at least a 1/2 hour waiting on one side of the immigration hall, were told we had to move across the entire mass of people to another area. We stood there for another 1/2 hour without moving, then were told we had to move back to the first area because we had children! An employee looked at our boarding pass and told us we had missed the flight to go to the rebooking area. So we went there - stood for 1/2 hour again and then were told to go to a different area since we had children. We went to the next area - stood there for 45min, the employee looked at our boarding pass and told us the flight was delayed to go to the gate. SO we returned to the SAME ORIGINAL area, tried to explain to an employee we were told to go to that area. The employee became very upset and was rude, complaining that someone had moved the barrier? (We had not touched it - we were simply trying to follow directions) We finally made it to security after an hour wait, one of our bags had to be inspected. At this point we were resigned to missing the flight - we still had to get to Cgates in terminal 5. We did manage to make the flight. BUT someone needs to figure out the mass confusion in the immigration hall. If there are only a certain number of scanners available. perhaps indicating the lanes as soon as you enter the hall would be a solution?? Instead of having lines 50 people wide trying to funnel them down into 5-6 scanners? I understand staff shortages, short tempers, etc. I am not an airport export, but I imagine there are people that can determine a solution to this MAJOR problem at such a huge and busy airport. Surely determining a solution to better movement of customers would save rebooking costs, etc for the airlines.

1 / 10
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Air CanadaPriceFrom $636Free CancellationRating
7.4
7.7

Boarding

7.6

Comfort

8.2

Crew

7.3

Entertainment

6.7

Food

Reviews

Routine. Went smoothly

1 / 10
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American Airlines flights from St. Louis to London Heathrow Airport

Our best American Airlines deals on St. Louis to London Heathrow Airport flight tickets
American Airlines
Nov 29
STL7:40 amLambert-St Louis
12h 20m
2 stops
LHR8:00 pmLondon Heathrow
Dec 7
LHR1:20 amLondon Heathrow
17h 39m
2 stops
STL6:59 pmLambert-St Louis
American Airlines
Feb 7
STL11:40 amLambert-St Louis
10h 35m
1 stop
LHR10:15 pmLondon Heathrow
Feb 16
LHR8:30 amLondon Heathrow
13h 40m
1 stop
STL10:10 pmLambert-St Louis
American Airlines
Oct 14
STL1:08 pmLambert-St Louis
9h 57m
1 stop
LHR11:05 pmLondon Heathrow
Oct 19
LHR4:35 amLondon Heathrow
17h 41m
2 stops
STL10:16 pmLambert-St Louis

Delta flights from St. Louis to London Heathrow Airport

Our best Delta deals on St. Louis to London Heathrow Airport flight tickets
Delta
Oct 12
STL4:32 amLambert-St Louis
16h 13m
1 stop
LHR8:45 pmLondon Heathrow
Oct 20
LHR2:30 amLondon Heathrow
16h 34m
2 stops
STL7:04 pmLambert-St Louis
Delta
Dec 7
STL11:08 amLambert-St Louis
12h 47m
2 stops
LHR11:55 pmLondon Heathrow
Dec 13
LHR6:45 amLondon Heathrow
14h 53m
2 stops
STL9:38 pmLambert-St Louis
Delta
Sep 14
STL9:08 amLambert-St Louis
15h 52m
2 stops
LHR1:00 amLondon Heathrow
Sep 21
LHR2:30 amLondon Heathrow
20h 29m
2 stops
STL10:59 pmLambert-St Louis

  • Are airlines flying from Lambert-St Louis to London Heathrow offering flexible cancellation due to COVID-19?

    To ease the stress of booking flights, some of our airline partners flying from Lambert-St Louis to London Heathrow are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travelers: American Airlines, British Airways, and United Airlines.

  • 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 9h 57m.



Alternative routes for St. Louis to London Heathrow Airport

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Kansas City to London Heathrow Airport Flights
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Kansas City to London Gatwick Airport Flights
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Kansas City to London City Airport Flights
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Kansas City to London Stansted Airport Flights
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St. Louis to London Stansted Airport Flights
Fastest flight time29h 29m
Cheapest price$1,318

Similar St. Louis to London Heathrow Airport flights

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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.

Flights from St. Louis to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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