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Cheap flights from St. Louis to the United Kingdom from £228

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 16/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:23 - 06:20
STL
-
LGW
27h 57m
2 stops
Multiple Airlines Logo
14:00 - 23:19
LGW
-
STL
15h 19m
1 stop
£568Multiple Airlines
Wed, 22 Apr - Mon, 27 Apr
Multiple Airlines Logo
16:59 - 10:00
STL
-
LGW
35h 01m
1 stop
Multiple Airlines Logo
14:00 - 23:19
LGW
-
STL
15h 19m
1 stop
£570Multiple Airlines
Sun, 19 Apr - Mon, 27 Apr
Lufthansa Logo
18:55 - 18:25
STL
-
LHR
17h 30m
2 stops
Lufthansa Logo
10:50 - 22:45
LHR
-
STL
17h 55m
2 stops
£588Lufthansa
Tue, 28 Apr - Wed, 6 May
Lufthansa Logo
18:55 - 18:25
STL
-
LHR
17h 30m
2 stops
Lufthansa Logo
06:30 - 13:25
LHR
-
STL
12h 55m
1 stop
£589Lufthansa
Tue, 28 Apr - Wed, 6 May
Air Canada Logo
16:05 - 17:35
STL
-
BHX
19h 30m
2 stops
Air Canada Logo
05:55 - 15:25
BHX
-
STL
15h 30m
2 stops
£627Air Canada
Tue, 21 Apr - Tue, 28 Apr
British Airways Logo
21:40 - 18:45
STL
-
GLA
15h 05m
1 stop
British Airways Logo
09:40 - 20:03
GLA
-
STL
16h 23m
2 stops
£637British Airways
Sun, 13 Sep - Thu, 24 Sep
British Airways Logo
07:44 - 10:30
STL
-
GLA
20h 46m
2 stops
British Airways Logo
09:40 - 23:38
GLA
-
STL
19h 58m
2 stops
£649British Airways
Sun, 13 Sep - Thu, 24 Sep
Air Canada Logo
12:10 - 07:40
STL
-
EDI
13h 30m
1 stop
Air Canada Logo
09:00 - 12:13
EDI
-
STL
33h 13m
2 stops
£663Air Canada
Sun, 23 Aug - Thu, 10 Sep
Virgin Atlantic Logo
11:42 - 08:15
STL
-
MAN
14h 33m
2 stops
Virgin Atlantic Logo
10:40 - 23:59
MAN
-
STL
19h 19m
1 stop
£665Virgin Atlantic
Wed, 6 May - Wed, 13 May
Virgin Atlantic Logo
11:42 - 10:00
STL
-
MAN
16h 18m
2 stops
Virgin Atlantic Logo
11:00 - 21:09
MAN
-
STL
16h 09m
2 stops
£667Virgin Atlantic
Wed, 6 May - Wed, 13 May

Air Canada flights from St. Louis to United Kingdom

Our best Air Canada deals on St. Louis to United Kingdom flight tickets
Air Canada
29 Apr
STL07:45Lambert-St Louis
18h 50m
2 stops
LHR08:35London Heathrow
7 May
LHR06:50London Heathrow
19h 35m
2 stops
STL20:25Lambert-St Louis
£611
Air Canada
15 Apr
STL06:30Lambert-St Louis
20h 05m
2 stops
LHR08:35London Heathrow
6 May
LHR06:50London Heathrow
19h 35m
2 stops
STL20:25Lambert-St Louis
£612
Air Canada
26 Aug
STL12:10Lambert-St Louis
15h 50m
1 stop
LHR10:00London Heathrow
2 Sept
LHR08:40London Heathrow
16h 02m
2 stops
STL18:42Lambert-St Louis
£613

British Airways flights from St. Louis to United Kingdom

Our best British Airways deals on St. Louis to United Kingdom flight tickets
British Airways
26 Apr
STL21:40Lambert-St Louis
8h 00m
LHR11:40London Heathrow
6 May
LHR21:00London Heathrow
28h 31m
2 stops
STL19:31Lambert-St Louis
£620
British Airways
14 Apr
STL16:30Lambert-St Louis
10h 35m
1 stop
LHR09:05London Heathrow
21 Apr
LHR16:25London Heathrow
9h 05m
STL19:30Lambert-St Louis
£621
British Airways
11 Aug
STL21:35Lambert-St Louis
8h 00m
LHR11:35London Heathrow
21 Aug
LHR13:10London Heathrow
13h 09m
1 stop
STL20:19Lambert-St Louis
£622

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 27 March 2026.
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

Cheapest return flight

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Wed 22/4

20:23-06:20

2 stops27h 57m

London Gatwick

Mon 27/4

14:00-23:19

1 stop15h 19m

£568

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Sun 19/4

16:59-10:00

1 stop35h 01m

London Gatwick

Mon 27/4

14:00-23:19

1 stop15h 19m

£570

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 28/4

18:55-18:25

2 stops17h 30m

London Heathrow

Wed 6/5

10:50-22:45

2 stops17h 55m

£588
Fastest return journey

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 28/4

18:55-18:25

2 stops17h 30m

London Heathrow

Wed 6/5

06:30-13:25

1 stop12h 55m

£589

St. LouisBirmingham

STL - BHX

STLBHX

Lambert-St Louis

Tue 21/4

16:05-17:35

2 stops19h 30m

Birmingham

Tue 28/4

05:55-15:25

2 stops15h 30m

£627

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Sun 13/9

21:40-18:45

1 stop15h 05m

Glasgow Intl

Thu 24/9

09:40-20:03

2 stops16h 23m

£637

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Sun 13/9

07:44-10:30

2 stops20h 46m

Glasgow Intl

Thu 24/9

09:40-23:38

2 stops19h 58m

£649

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 23/8

12:10-07:40

1 stop13h 30m

Edinburgh Turnhouse

Thu 10/9

09:00-12:13

2 stops33h 13m

£663

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Wed 6/5

11:42-08:15

2 stops14h 33m

Manchester

Wed 13/5

10:40-23:59

1 stop19h 19m

£665

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Wed 6/5

11:42-10:00

2 stops16h 18m

Manchester

Wed 13/5

11:00-21:09

2 stops16h 09m

£667

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 January. Flight prices, which tend to average around £503, 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 January, then departing from St. Louis during the month October is also very affordable. Most momondo users find prices during this month for around £517.

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 Friday. Travellers who choose to depart for United Kingdom on a Friday will often find tickets for as low as £477. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to United Kingdom for around £907.

What is the cheapest Lambert-St Louis to United Kingdom flight route?

Fly from Lambert-St Louis to London Heathrow for the best Lambert-St Louis - United Kingdom flight prices

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 £631 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 £566 on momondo.

What cabin class options are available on Lambert-St Louis to United Kingdom flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 7% 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

£924

Fastest flight time

8h 00m

Direct flights

Mon, Wed, Thu and Sat

Airports in United Kingdom

1,286 airports
The best flight deal from St. Louis to United Kingdom found on momondo in the last 72 hours is £924
The fastest flight from St. Louis to United Kingdom takes 8h 00m
Direct flights go from St. Louis to United Kingdom on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights..
There are 1,286 airports in United Kingdom. From St. Louis there are direct flights to London Heathrow (LHR).
Search flight deals

  • 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.

  • What is the most popular plane model from St. Louis to United Kingdom?

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
Virgin AtlanticPriceFrom £411Free CancellationRating
7.5
685 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £434Free CancellationRating
6.7
7,824 reviews
Search British Airways 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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Find better results for your trip to the United Kingdom

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
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