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Cheap flights from the United Kingdom to St. Louis from £277

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to St. Louis departing on 17/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from the United Kingdom to St. Louis

Recent return flight deals from the United Kingdom to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:00 - 23:19
LGW
-
STL
14h 19m
1 stop
Multiple Airlines Logo
08:02 - 10:00
STL
-
LGW
20h 58m
1 stop
£434Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Multiple Airlines Logo
14:00 - 13:34
LGW
-
STL
28h 34m
2 stops
Multiple Airlines Logo
08:02 - 10:00
STL
-
LGW
20h 58m
1 stop
£465Multiple Airlines
Thu, 12 Mar - Thu, 19 Mar
Virgin Atlantic Logo
11:30 - 23:36
LHR
-
STL
18h 06m
2 stops
Virgin Atlantic Logo
13:39 - 10:15
STL
-
LHR
15h 36m
2 stops
£498Virgin Atlantic
Mon, 2 Mar - Mon, 16 Mar
Virgin Atlantic Logo
11:30 - 23:36
LHR
-
STL
18h 06m
2 stops
Virgin Atlantic Logo
18:59 - 09:00
STL
-
LHR
33h 01m
1 stop
£499Virgin Atlantic
Mon, 2 Mar - Mon, 16 Mar
British Airways Logo
09:55 - 16:58
LHR
-
STL
13h 03m
1 stop
British Airways Logo
18:08 - 11:40
STL
-
LHR
12h 32m
1 stop
£529British Airways
Tue, 3 Mar - Tue, 10 Mar
Finnair Logo
17:00 - 11:29
LHR
-
STL
23h 29m
2 stops
Finnair Logo
06:00 - 07:00
STL
-
LHR
20h 00m
2 stops
£537Finnair
Wed, 18 Mar - Wed, 25 Mar
British Airways Logo
09:55 - 19:30
LHR
-
STL
14h 35m
1 stop
British Airways Logo
16:13 - 10:00
STL
-
LHR
12h 47m
1 stop
£551British Airways
Wed, 18 Mar - Wed, 25 Mar
Finnair Logo
08:15 - 17:19
BHX
-
STL
38h 04m
2 stops
Finnair Logo
11:59 - 12:50
STL
-
BHX
19h 51m
2 stops
£777Finnair
Thu, 19 Mar - Thu, 26 Mar
United Airlines Logo
06:00 - 14:55
MAN
-
STL
13h 55m
1 stop
United Airlines Logo
08:17 - 08:40
STL
-
MAN
19h 23m
2 stops
£888United Airlines
Wed, 18 Mar - Wed, 25 Mar
United Airlines Logo
06:00 - 21:42
MAN
-
STL
20h 42m
2 stops
United Airlines Logo
13:14 - 08:40
STL
-
MAN
14h 26m
2 stops
£892United Airlines
Wed, 18 Mar - Wed, 25 Mar

United Airlines flights from United Kingdom to St. Louis

Our best United Airlines deals on United Kingdom to St. Louis flight tickets
United Airlines
18 Mar
MAN06:00Manchester
13h 55m
1 stop
STL14:55Lambert-St Louis
25 Mar
STL16:50Lambert-St Louis
17h 00m
1 stop
MAN14:50Manchester
£888
United Airlines
25 Jun
EDI11:30Edinburgh Turnhouse
15h 41m
1 stop
STL21:11Lambert-St Louis
6 Jul
STL12:10Lambert-St Louis
13h 30m
1 stop
EDI07:40Edinburgh Turnhouse
£1,109
United Airlines
5 Feb
LHR11:10London Heathrow
17h 48m
2 stops
STL22:58Lambert-St Louis
9 Feb
STL09:57Lambert-St Louis
13h 58m
1 stop
LHR05:55London Heathrow
£1,168

Scandinavian Airlines flights from United Kingdom to St. Louis

Our best Scandinavian Airlines deals on United Kingdom to St. Louis flight tickets
Scandinavian Airlines
6 May
MAN21:10Manchester
29h 39m
3 stops
STL20:49Lambert-St Louis
10 Aug
STL13:30Lambert-St Louis
23h 00m
2 stops
MAN18:30Manchester
£1,019
Scandinavian Airlines
5 Feb
MAN19:15Manchester
34h 22m
2 stops
STL23:37Lambert-St Louis
9 Feb
STL15:45Lambert-St Louis
35h 45m
2 stops
MAN09:30Manchester
£1,174
Scandinavian Airlines
5 Feb
MAN19:15Manchester
34h 22m
2 stops
STL23:37Lambert-St Louis
9 Feb
STL15:45Lambert-St Louis
20h 50m
2 stops
MAN18:35Manchester
£1,176

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to St. Louis 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 3 February 2026.
Use the filters below to find and compare flights from the United Kingdom to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 12/3

14:00-23:19

1 stop14h 19m

Lambert-St Louis

Thu 19/3

08:02-10:00

1 stop20h 58m

£434

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 12/3

14:00-13:34

2 stops28h 34m

Lambert-St Louis

Thu 19/3

08:02-10:00

1 stop20h 58m

£465

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 2/3

11:30-23:36

2 stops18h 06m

Lambert-St Louis

Mon 16/3

13:39-10:15

2 stops15h 36m

£498

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 2/3

11:30-23:36

2 stops18h 06m

Lambert-St Louis

Mon 16/3

18:59-09:00

1 stop33h 01m

£499

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 3/3

09:55-16:58

1 stop13h 03m

Lambert-St Louis

Tue 10/3

18:08-11:40

1 stop12h 32m

£529

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 18/3

17:00-11:29

2 stops23h 29m

Lambert-St Louis

Wed 25/3

06:00-07:00

2 stops20h 00m

£537

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 18/3

09:55-19:30

1 stop14h 35m

Lambert-St Louis

Wed 25/3

16:13-10:00

1 stop12h 47m

£551

BirminghamSt. Louis

BHX - STL

BHXSTL

Birmingham

Thu 19/3

08:15-17:19

2 stops38h 04m

Lambert-St Louis

Thu 26/3

11:59-12:50

2 stops19h 51m

£777

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Wed 18/3

06:00-14:55

1 stop13h 55m

Lambert-St Louis

Wed 25/3

08:17-08:40

2 stops19h 23m

£888

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Wed 18/3

06:00-21:42

2 stops20h 42m

Lambert-St Louis

Wed 25/3

13:14-08:40

2 stops14h 26m

£892

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 St. Louis from

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

The month of March is, on average, the cheapest month to fly to St. Louis from United Kingdom, with most prices found around £531. If you’re not able to fly to St. Louis in March, then January is your next best option. Flight prices from United Kingdom to St. Louis during January average around £551.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Saturday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £584. Flights from United Kingdom to St. Louis on a Tuesday will generally be more expensive and average around £692. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around £713 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from United Kingdom for as low as £599 on momondo.

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

There is only 1 cabin class available to choose from on United Kingdom to Lambert-St Louis 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 United Kingdom to St. Louis flights?

You could potentially save up to 21% on your flight if you consider stops on a United Kingdom to St. Louis flight.

Cheap United Kingdom to St. Louis flight deals and tips

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

Best price found

£567

Fastest flight time

9h 05m

Direct flights

Mon, Wed, Thu and Sat

Airports in St. Louis

1 airport
The best flight deal from United Kingdom to St. Louis found on momondo in the last 72 hours is £567
The fastest flight from United Kingdom to St. Louis takes 9h 05m
Direct flights go from United Kingdom to St. Louis on Monday, Wednesday, Thursday and Saturday. There are no airlines offering direct flights..
There is 1 airport in St. Louis. From United Kingdom there are direct flights to Lambert-St Louis (STL).
Search flight deals

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

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

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom 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 plane model from United Kingdom to St. Louis?

Best airlines flying from United Kingdom to St. Louis

Compare and see reviews for airlines that fly from United Kingdom to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom £168Free CancellationRating
7.2
11,215 reviews
Search American Airlines flights
United AirlinesPriceFrom £464Free CancellationRating
7.4
9,232 reviews
Search United Airlines flights
British AirwaysPriceFrom £469Free CancellationRating
6.7
7,711 reviews
Search British Airways flights
KLMPriceFrom £494Free CancellationRating
7.7
1,448 reviews
Search KLM flights
FinnairPriceFrom £499Free CancellationRating
7.6
1,357 reviews
Search Finnair flights
Virgin AtlanticPriceFrom £545Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £583Free CancellationRating
7.3
1,676 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom £591Free CancellationRating
7.1
10,680 reviews
Search Air Canada flights
DeltaPriceFrom £596Free CancellationRating
7.9
8,136 reviews
Search Delta flights
IberiaPriceFrom £642Free CancellationRating
7.0
3,102 reviews
Search Iberia flights

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Collinsville
St. Charles

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United Kingdom to St. Louis . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for United Kingdom to St. Louis flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from United Kingdom.

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

Price alerts on flights to St. Louis from United Kingdom are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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