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Cheap flights from the United Kingdom to St. Louis from £237

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 22/1. 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 - 23:33
LGW
-
STL
15h 33m1 stop
Multiple Airlines Logo
10:16 - 10:00
STL
-
LGW
17h 44m1 stop
£360Multiple Airlines
Thu, 22 Jan - Mon, 26 Jan
Multiple Airlines Logo
14:00 - 23:33
LGW
-
STL
15h 33m1 stop
Multiple Airlines Logo
10:16 - 10:00
STL
-
LGW
17h 44m1 stop
£366Multiple Airlines
Thu, 22 Jan - Mon, 26 Jan
British Airways Logo
08:20 - 17:13
LHR
-
STL
13h 53m1 stop
British Airways Logo
18:57 - 12:00
STL
-
LHR
12h 03m1 stop
£528British Airways
Mon, 16 Mar - Mon, 23 Mar
British Airways Logo
16:25 - 19:30
LHR
-
STL
9h 05mdirect
British Airways Logo
14:19 - 07:10
STL
-
LHR
10h 51m1 stop
£535British Airways
Wed, 22 Apr - Wed, 6 May
Finnair Logo
10:15 - 21:26
LHR
-
STL
16h 11m2 stops
Finnair Logo
11:47 - 06:50
STL
-
LHR
14h 03m1 stop
£537Finnair
Mon, 16 Mar - Mon, 23 Mar
Finnair Logo
07:30 - 21:48
LHR
-
STL
20h 18m2 stops
Finnair Logo
18:29 - 10:30
STL
-
LHR
10h 01m1 stop
£540Finnair
Wed, 22 Apr - Wed, 6 May
Virgin Atlantic Logo
13:30 - 20:37
MAN
-
STL
13h 07m1 stop
Virgin Atlantic Logo
15:45 - 10:30
STL
-
MAN
12h 45m1 stop
£644Virgin Atlantic
Thu, 29 Jan - Thu, 5 Feb
Virgin Atlantic Logo
13:30 - 23:39
MAN
-
STL
16h 09m1 stop
Virgin Atlantic Logo
17:00 - 10:30
STL
-
MAN
11h 30m1 stop
£664Virgin Atlantic
Wed, 7 Jan - Tue, 13 Jan
Iberia Logo
19:15 - 21:15
LCY
-
STL
32h 00m2 stops
Iberia Logo
11:05 - 14:35
STL
-
LCY
21h 30m2 stops
£714Iberia
Thu, 22 Jan - Mon, 26 Jan
Iberia Logo
18:05 - 23:23
EDI
-
STL
35h 18m2 stops
Iberia Logo
09:43 - 17:05
STL
-
EDI
25h 22m2 stops
£826Iberia
Thu, 28 May - Wed, 15 Jul

British Airways flights from United Kingdom to St. Louis

Our best British Airways deals on United Kingdom to St. Louis flight tickets
British Airways
16 Mar
LHR08:20London Heathrow
13h 53m
1 stop
STL17:13Lambert-St Louis
23 Mar
STL18:57Lambert-St Louis
12h 03m
1 stop
LHR12:00London Heathrow
£528
Find similar
British Airways
22 Apr
LHR16:25London Heathrow
9h 05m
STL19:30Lambert-St Louis
6 May
STL14:19Lambert-St Louis
10h 51m
1 stop
LHR07:10London Heathrow
£535
Find similar
British Airways
22 Apr
LHR12:30London Heathrow
13h 33m
1 stop
STL20:03Lambert-St Louis
6 May
STL14:19Lambert-St Louis
10h 51m
1 stop
LHR07:10London Heathrow
£539
Find similar

Finnair flights from United Kingdom to St. Louis

Our best Finnair deals on United Kingdom to St. Louis flight tickets
Finnair
16 Mar
LHR10:15London Heathrow
16h 11m
2 stops
STL21:26Lambert-St Louis
23 Mar
STL11:47Lambert-St Louis
14h 03m
1 stop
LHR06:50London Heathrow
£537
Find similar
Finnair
22 Apr
LHR07:30London Heathrow
20h 18m
2 stops
STL21:48Lambert-St Louis
6 May
STL18:29Lambert-St Louis
10h 01m
1 stop
LHR10:30London Heathrow
£540
Find similar
Finnair
5 May
LHR08:20London Heathrow
13h 51m
1 stop
STL16:11Lambert-St Louis
19 May
STL18:29Lambert-St Louis
21h 11m
2 stops
LHR21:40London Heathrow
£549
Find similar

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 15 December 2025.
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 22/1

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Mon 26/1

10:16-10:00

1 stop17h 44m

£360

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 22/1

14:00-23:33

1 stop15h 33m

Lambert-St Louis

Mon 26/1

10:16-10:00

1 stop17h 44m

£366

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 16/3

08:20-17:13

1 stop13h 53m

Lambert-St Louis

Mon 23/3

18:57-12:00

1 stop12h 03m

£528

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 22/4

16:25-19:30

Nonstop9h 05m

Lambert-St Louis

Wed 6/5

14:19-07:10

1 stop10h 51m

£535

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 16/3

10:15-21:26

2 stops16h 11m

Lambert-St Louis

Mon 23/3

11:47-06:50

1 stop14h 03m

£537

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 22/4

07:30-21:48

2 stops20h 18m

Lambert-St Louis

Wed 6/5

18:29-10:30

1 stop10h 01m

£540

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Thu 29/1

13:30-20:37

1 stop13h 07m

Lambert-St Louis

Thu 5/2

15:45-10:30

1 stop12h 45m

£644

ManchesterSt. Louis

MAN - STL

MANSTL

Manchester

Wed 7/1

13:30-23:39

1 stop16h 09m

Lambert-St Louis

Tue 13/1

17:00-10:30

1 stop11h 30m

£664

LondonSt. Louis

LCY - STL

LCYSTL

London City

Thu 22/1

19:15-21:15

2 stops32h 00m

Lambert-St Louis

Mon 26/1

11:05-14:35

2 stops21h 30m

£714

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Thu 28/5

18:05-23:23

2 stops35h 18m

Lambert-St Louis

Wed 15/7

09:43-17:05

2 stops25h 22m

£826

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 £552. 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 £563.

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

Our data shows that Sunday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £610. Flights from United Kingdom to St. Louis on a Thursday will generally be more expensive and average around £684. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest United Kingdom to St. Louis flights are usually those with departure times in the evening. Our users have found flights to St. Louis in the evening for as low as £562. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £661.

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 £731 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 £636 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

£578

Fastest flight time

9h 05m

Direct flights

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 £578
The fastest flight from United Kingdom to St. Louis takes 9h 05m
Direct flights go from United Kingdom to St. Louis on 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 £171Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
British AirwaysPriceFrom £482Free CancellationRating
6.7
7,575 reviews
Search British Airways flights
KLMPriceFrom £505Free CancellationRating
7.7
1,430 reviews
Search KLM flights
FinnairPriceFrom £509Free CancellationRating
7.6
1,337 reviews
Search Finnair flights
Virgin AtlanticPriceFrom £562Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
Scandinavian AirlinesPriceFrom £596Free CancellationRating
7.4
1,606 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom £605Free CancellationRating
7.1
10,526 reviews
Search Air Canada flights
United AirlinesPriceFrom £617Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
DeltaPriceFrom £624Free CancellationRating
7.9
8,008 reviews
Search Delta flights
IberiaPriceFrom £648Free CancellationRating
7.0
3,052 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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