Cheap flights from the United Kingdom to St. Louis from £248

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 13/11. 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
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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.
Virgin Atlantic Logo
17:35 - 16:07LHR-STL
28h 32m2 stops
Virgin Atlantic Logo
19:02 - 09:00STL-LHR
31h 58m1 stop
£536Virgin Atlantic
Find Deal
Mon, 17 Nov - Mon, 1 Dec
British Airways Logo
08:20 - 16:27LHR-STL
14h 07m1 stop
British Airways Logo
14:08 - 07:20STL-LHR
11h 12m1 stop
£540British Airways
Find Deal
Mon, 17 Nov - Mon, 1 Dec
American Airlines Logo
12:30 - 08:06LGW-STL
49h 36m2 stops
American Airlines Logo
19:05 - 09:00STL-LGW
56h 55m2 stops
£544American Airlines
Find Deal
Thu, 5 Mar - Mon, 9 Mar
British Airways Logo
14:45 - 00:05LHR-STL
15h 20m1 stop
British Airways Logo
11:50 - 06:30STL-LHR
12h 40m1 stop
£553British Airways
Find Deal
Thu, 20 Nov - Mon, 8 Dec
Virgin Atlantic Logo
10:45 - 18:02LHR-STL
13h 17m1 stop
Virgin Atlantic Logo
10:45 - 08:45STL-LHR
16h 00m1 stop
£561Virgin Atlantic
Find Deal
Wed, 5 Nov - Wed, 19 Nov
Iberia Logo
19:05 - 19:06LHR-STL
30h 01m2 stops
Iberia Logo
14:54 - 08:25STL-LHR
35h 31m2 stops
£598Iberia
Find Deal
Thu, 4 Dec - Sun, 7 Dec
United Airlines Logo
12:30 - 19:16EDI-STL
12h 46m1 stop
United Airlines Logo
07:00 - 07:55STL-EDI
18h 55m1 stop
£866United Airlines
Find Deal
Mon, 10 Nov - Mon, 17 Nov
Lufthansa Logo
12:30 - 19:16EDI-STL
12h 46m1 stop
Lufthansa Logo
12:31 - 12:00STL-EDI
17h 29m2 stops
£870Lufthansa
Find Deal
Mon, 10 Nov - Mon, 17 Nov
Lufthansa Logo
09:25 - 23:58EDI-STL
20h 33m1 stop
Lufthansa Logo
11:27 - 07:55STL-EDI
14h 28m1 stop
£880Lufthansa
Find Deal
Fri, 20 Feb - Tue, 24 Feb
United Airlines Logo
09:25 - 16:59EDI-STL
13h 34m1 stop
United Airlines Logo
13:11 - 07:55STL-EDI
12h 44m2 stops
£884United Airlines
Find Deal
Fri, 20 Feb - Tue, 24 Feb

Delta flights from United Kingdom to St. Louis

Our best Delta deals on United Kingdom to St. Louis flight tickets
Delta
17 Nov
LHR06:30London Heathrow
16h 39m
2 stops
STL17:09Lambert-St Louis
1 Dec
STL18:09Lambert-St Louis
13h 36m
2 stops
LHR13:45London Heathrow
Delta
20 Nov
LHR06:30London Heathrow
15h 37m
2 stops
STL16:07Lambert-St Louis
8 Dec
STL11:40Lambert-St Louis
15h 05m
2 stops
LHR08:45London Heathrow
Delta
13 Nov
LHR06:30London Heathrow
17h 27m
2 stops
STL17:57Lambert-St Louis
14 Dec
STL11:40Lambert-St Louis
14h 10m
1 stop
LHR07:50London Heathrow

Aer Lingus flights from United Kingdom to St. Louis

Our best Aer Lingus deals on United Kingdom to St. Louis flight tickets
Aer Lingus
24 Nov
LHR07:50London Heathrow
21h 14m
2 stops
STL23:04Lambert-St Louis
30 Nov
STL16:46Lambert-St Louis
34h 19m
2 stops
LHR09:05London Heathrow
Aer Lingus
17 Nov
LHR08:50London Heathrow
18h 10m
2 stops
STL21:00Lambert-St Louis
20 Nov
STL06:00Lambert-St Louis
22h 10m
2 stops
LHR10:10London Heathrow
Aer Lingus
24 Nov
LHR09:50London Heathrow
19h 14m
2 stops
STL23:04Lambert-St Louis
1 Dec
STL06:00Lambert-St Louis
20h 05m
2 stops
LHR08:05London Heathrow

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 17 October 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

LHR - STL

LHRSTL

London Heathrow

Mon 17/11

17:35-16:07

2 stops28h 32m

Lambert-St Louis

Mon 1/12

19:02-09:00

1 stop31h 58m

£536

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 17/11

08:20-16:27

1 stop14h 07m

Lambert-St Louis

Mon 1/12

14:08-07:20

1 stop11h 12m

£540

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 5/3

12:30-08:06

2 stops49h 36m

Lambert-St Louis

Mon 9/3

19:05-09:00

2 stops56h 55m

£544

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 20/11

14:45-00:05

1 stop15h 20m

Lambert-St Louis

Mon 8/12

11:50-06:30

1 stop12h 40m

£553

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 5/11

10:45-18:02

1 stop13h 17m

Lambert-St Louis

Wed 19/11

10:45-08:45

1 stop16h 00m

£561

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 4/12

19:05-19:06

2 stops30h 01m

Lambert-St Louis

Sun 7/12

14:54-08:25

2 stops35h 31m

£598

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Mon 10/11

12:30-19:16

1 stop12h 46m

Lambert-St Louis

Mon 17/11

07:00-07:55

1 stop18h 55m

£866

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Mon 10/11

12:30-19:16

1 stop12h 46m

Lambert-St Louis

Mon 17/11

12:31-12:00

2 stops17h 29m

£870

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Fri 20/2

09:25-23:58

1 stop20h 33m

Lambert-St Louis

Tue 24/2

11:27-07:55

1 stop14h 28m

£880

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Fri 20/2

09:25-16:59

1 stop13h 34m

Lambert-St Louis

Tue 24/2

13:11-07:55

2 stops12h 44m

£884

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 £551. 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 £561.

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 £456. Flights from United Kingdom to St. Louis on a Saturday will generally be more expensive and average around £685. 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 afternoon. Our users have found flights to St. Louis in the afternoon for as low as £456. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £659.

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 £728 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 £651 on momondo.

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

You could potentially save up to 5% 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

£456

Direct flights

None
The best flight deal from United Kingdom to St. Louis found on momondo in the last 72 hours is £456
There are no direct flights from United Kingdom to St. Louis. Popular non-direct route for this connection is London Heathrow Airport - Lambert-St Louis Airport.
  • 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 £88Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
Scandinavian AirlinesPriceFrom £479Free CancellationRating
7.4
1,533 reviews
Search Scandinavian Airlines flights
FinnairPriceFrom £509Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
Air CanadaPriceFrom £604Free CancellationRating
7.1
10,306 reviews
Search Air Canada flights
United AirlinesPriceFrom £625Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
IberiaPriceFrom £625Free CancellationRating
7.0
2,992 reviews
Search Iberia flights
British AirwaysPriceFrom £633Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
LufthansaPriceFrom £691Free CancellationRating
6.8
7,497 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £701Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
KLMPriceFrom £717Free CancellationRating
7.7
1,404 reviews
Search KLM flights

Travelling to a place near St. Louis?

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

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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1 adult
Sun 16/11
Sun 23/11

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