Cheap flights from St. Louis to the United Kingdom from £238

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 the United Kingdom departing on 14/9. 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

Air Canada Logo
13:30 - 09:35STL-LHR
14h 05m1 stop
Air Canada Logo
06:50 - 15:18LHR-STL
14h 28m2 stops
£360Air Canada
Find Deal
週日, 14 9月 - 週二, 30 9月
Air Canada Logo
13:30 - 09:35STL-LHR
14h 05m1 stop
Air Canada Logo
12:05 - 19:38LHR-STL
13h 33m1 stop
£370Air Canada
Find Deal
週日, 14 9月 - 週二, 30 9月
United Airlines Logo
13:30 - 06:30STL-LHR
11h 00m1 stop
United Airlines Logo
14:05 - 10:49LHR-STL
26h 44m2 stops
£379United Airlines
Find Deal
週二, 14 10月 - 週三, 22 10月
United Airlines Logo
11:20 - 10:15STL-LHR
16h 55m1 stop
United Airlines Logo
13:25 - 14:25LHR-STL
31h 00m2 stops
£383United Airlines
Find Deal
週一, 3 11月 - 週二, 11 11月
British Airways Logo
17:52 - 12:45STL-LHR
12h 53m1 stop
British Airways Logo
19:30 - 19:09LHR-STL
29h 39m2 stops
£390British Airways
Find Deal
週一, 18 8月 - 週三, 27 8月
British Airways Logo
19:59 - 12:15STL-LHR
10h 16m1 stop
British Airways Logo
12:15 - 18:23LHR-STL
12h 08m1 stop
£393British Airways
Find Deal
週一, 18 8月 - 週三, 27 8月
Virgin Atlantic Logo
10:45 - 06:45STL-LHR
14h 00m2 stops
Virgin Atlantic Logo
10:55 - 22:02LHR-STL
17h 07m2 stops
£404Virgin Atlantic
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週三, 20 8月 - 週四, 4 9月
KLM Logo
13:26 - 12:05STL-EDI
16h 39m1 stop
KLM Logo
09:00 - 22:00EDI-STL
19h 00m1 stop
£503KLM
Find Deal
週日, 7 9月 - 週三, 17 9月
KLM Logo
15:36 - 12:05STL-EDI
14h 29m1 stop
KLM Logo
09:00 - 16:05EDI-STL
13h 05m1 stop
£503KLM
Find Deal
週二, 2 9月 - 週五, 12 9月
Virgin Atlantic Logo
11:04 - 08:35STL-MAN
15h 31m1 stop
Virgin Atlantic Logo
12:35 - 23:24MAN-STL
16h 49m1 stop
£535Virgin Atlantic
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週五, 12 9月 - 週五, 19 9月

United Airlines flights from St. Louis to United Kingdom

Our best United Airlines deals on St. Louis to United Kingdom flight tickets
United Airlines
14 Oct
STL13:30Lambert-St Louis
11h 00m
1 stop
LHR06:30London Heathrow
22 Oct
LHR14:05London Heathrow
26h 44m
2 stops
STL10:49Lambert-St Louis
United Airlines
3 Nov
STL11:20Lambert-St Louis
16h 55m
1 stop
LHR10:15London Heathrow
11 Nov
LHR13:25London Heathrow
31h 00m
2 stops
STL14:25Lambert-St Louis
United Airlines
21 Oct
STL16:05Lambert-St Louis
13h 45m
1 stop
LHR11:50London Heathrow
30 Oct
LHR13:25London Heathrow
30h 00m
2 stops
STL14:25Lambert-St Louis

British Airways flights from St. Louis to United Kingdom

Our best British Airways deals on St. Louis to United Kingdom flight tickets
British Airways
18 Aug
STL17:52Lambert-St Louis
12h 53m
1 stop
LHR12:45London Heathrow
27 Aug
LHR19:30London Heathrow
29h 39m
2 stops
STL19:09Lambert-St Louis
British Airways
18 Aug
STL19:59Lambert-St Louis
10h 16m
1 stop
LHR12:15London Heathrow
27 Aug
LHR12:15London Heathrow
12h 08m
1 stop
STL18:23Lambert-St Louis
British Airways
11 Oct
STL20:00Lambert-St Louis
29h 20m
1 stop
LHR07:20London Heathrow
21 Oct
LHR06:10London Heathrow
20h 43m
2 stops
STL20:53Lambert-St Louis

momondo Fare Finder

 
Customise your flight search to find flights from St. Louis to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 1 8月 2025.
Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週日 14/9

13:30-09:35

1 stop14h 05m

London Heathrow

週二 30/9

06:50-15:18

2 stops14h 28m

£360

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週日 14/9

13:30-09:35

1 stop14h 05m

London Heathrow

週二 30/9

12:05-19:38

1 stop13h 33m

£370

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週二 14/10

13:30-06:30

1 stop11h 00m

London Heathrow

週三 22/10

14:05-10:49

2 stops26h 44m

£379

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週一 3/11

11:20-10:15

1 stop16h 55m

London Heathrow

週二 11/11

13:25-14:25

2 stops31h 00m

£383

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週一 18/8

17:52-12:45

1 stop12h 53m

London Heathrow

週三 27/8

19:30-19:09

2 stops29h 39m

£390

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週一 18/8

19:59-12:15

1 stop10h 16m

London Heathrow

週三 27/8

12:15-18:23

1 stop12h 08m

£393

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

週三 20/8

10:45-06:45

2 stops14h 00m

London Heathrow

週四 4/9

10:55-22:02

2 stops17h 07m

£404

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

週日 7/9

13:26-12:05

1 stop16h 39m

Edinburgh Turnhouse

週三 17/9

09:00-22:00

1 stop19h 00m

£502

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

週二 2/9

15:36-12:05

1 stop14h 29m

Edinburgh Turnhouse

週五 12/9

09:00-16:05

1 stop13h 05m

£503

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

週五 12/9

11:04-08:35

1 stop15h 31m

Manchester

週五 19/9

12:35-23:24

1 stop16h 49m

£535

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from St. Louis to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from St. Louis is in October. Flight prices, which tend to average around £577, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from St. Louis during the month April is also very affordable. Most momondo users find prices during this month for around £580.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from St. Louis to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £581. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to United Kingdom for around £957.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the morning when flights can be purchased for as low as £615. Try not to purchase tickets in the evening because they tend to be around £1,101. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £711 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from St. Louis for as low as £620 on momondo.

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

You could potentially save up to 12% on your flight if you consider stops on a St. Louis to United Kingdom flight.

Cheap St. Louis to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to United Kingdom

Best price found

£238

Fastest flight time

10h 10m

Direct flights

None

Airports in United Kingdom

8 airports
The best one-way flight to United Kingdom from St. Louis in the past 72 hours is £238. The best return flight deal from St. Louis to United Kingdom found on momondo in the last 72 hours is £360.
The fastest flight from St. Louis to United Kingdom takes 10h 10m
There are no direct flights from St. Louis to United Kingdom. Popular non-direct routes for this connection are Lambert-St Louis Airport - London Gatwick Airport, Lambert-St Louis Airport - Birmingham Airport and Lambert-St Louis Airport - London Heathrow Airport.
There are 8 airports near United Kingdom: Birmingham (BHX), London City (LCY), London Heathrow (LHR), London Luton (LTN), Manchester (MAN), Edinburgh Turnhouse (EDI), London Stansted (STN), London Gatwick (LGW)

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

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

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

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

    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 United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents required for your trip to United Kingdom 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 United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.


Best airlines flying from St. Louis to United Kingdom

Compare and see reviews for airlines that fly from St. Louis to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom £442Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
British AirwaysPriceFrom £498Free CancellationRating
6.6
7,222 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £500Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
KLMPriceFrom £538Free CancellationRating
7.8
1,383 reviews
Search KLM flights

Why use momondo?

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

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 St. Louis to United Kingdom for you.

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

All flight searches from St. Louis to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential St. Louis to United Kingdom flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from St. Louis and alert you when they change.


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1 adult
週三 6/8
週三 13/8

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