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Cheap flights from the United Kingdom to St. Louis from $385

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 5/29. 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 round-trip flight deals from the United Kingdom to St. Louis

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
1:25 pm - 5:44 pm
LHR
-
STL
34h 19m
1 stop
Virgin Atlantic Logo
1:46 pm - 7:10 am
STL
-
LHR
11h 24m
1 stop
$763Virgin Atlantic
Mon, Apr 20 - Thu, Apr 30
Finnair Logo
2:30 pm - 11:51 pm
LHR
-
STL
15h 21m
2 stops
Finnair Logo
9:46 am - 8:00 am
STL
-
LHR
16h 14m
1 stop
$764Finnair
Wed, Sep 2 - Wed, Sep 23
Virgin Atlantic Logo
9:20 am - 9:19 pm
LHR
-
STL
17h 59m
1 stop
Virgin Atlantic Logo
1:46 pm - 7:10 am
STL
-
LHR
11h 24m
1 stop
$776Virgin Atlantic
Mon, Apr 20 - Thu, Apr 30
British Airways Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
British Airways Logo
4:47 pm - 9:25 am
STL
-
LHR
10h 38m
1 stop
$783British Airways
Wed, Sep 2 - Wed, Sep 23
British Airways Logo
4:25 pm - 7:30 pm
LHR
-
STL
9h 05mnonstop
British Airways Logo
12:47 pm - 6:55 am
STL
-
LHR
12h 08m
1 stop
$795British Airways
Wed, Sep 2 - Wed, Sep 23
Multiple Airlines Logo
2:00 pm - 6:50 am
LGW
-
STL
22h 50m
2 stops
Multiple Airlines Logo
4:19 pm - 10:00 am
STL
-
LGW
35h 41m
1 stop
$795Multiple Airlines
Fri, Apr 24 - Fri, May 8
Multiple Airlines Logo
2:00 pm - 11:19 pm
LGW
-
STL
15h 19m
1 stop
Multiple Airlines Logo
4:19 pm - 10:00 am
STL
-
LGW
35h 41m
1 stop
$824Multiple Airlines
Fri, Apr 24 - Fri, May 8
Delta Logo
8:25 am - 8:44 pm
LCY
-
STL
18h 19m
2 stops
Delta Logo
10:19 am - 7:55 am
STL
-
LCY
15h 36m
2 stops
$949Delta
Tue, Apr 14 - Thu, May 14
Delta Logo
8:25 am - 8:44 pm
LCY
-
STL
18h 19m
2 stops
Delta Logo
12:23 pm - 7:55 am
STL
-
LCY
13h 32m
2 stops
$990Delta
Mon, Apr 20 - Thu, Apr 30
United Airlines Logo
5:55 am - 9:13 pm
BHX
-
STL
21h 18m
2 stops
United Airlines Logo
7:09 pm - 5:35 pm
STL
-
BHX
16h 26m
2 stops
$1,328United Airlines
Tue, May 5 - Tue, May 12

Virgin Atlantic flights from United Kingdom to St. Louis

Our best Virgin Atlantic deals on United Kingdom to St. Louis flight tickets
Virgin Atlantic
Apr 20
LHR1:25 pmLondon Heathrow
34h 19m
1 stop
STL5:44 pmLambert-St Louis
Apr 30
STL1:46 pmLambert-St Louis
11h 24m
1 stop
LHR7:10 amLondon Heathrow
$763
Virgin Atlantic
Apr 20
LHR9:20 amLondon Heathrow
17h 59m
1 stop
STL9:19 pmLambert-St Louis
Apr 30
STL1:46 pmLambert-St Louis
11h 24m
1 stop
LHR7:10 amLondon Heathrow
$776
Virgin Atlantic
May 4
LHR11:15 amLondon Heathrow
16h 04m
1 stop
STL9:19 pmLambert-St Louis
May 11
STL10:19 amLambert-St Louis
14h 51m
1 stop
LHR7:10 amLondon Heathrow
$823

Turkish Airlines flights from United Kingdom to St. Louis

Our best Turkish Airlines deals on United Kingdom to St. Louis flight tickets
Turkish Airlines
Apr 15
STN6:55 amLondon Stansted
44h 18m
2 stops
STL9:13 pmLambert-St Louis
Apr 24
STL7:45 amLambert-St Louis
32h 25m
2 stops
STN10:10 pmLondon Stansted
$1,350
Turkish Airlines
Mar 30
LGW10:50 amLondon Gatwick
40h 18m
2 stops
STL9:08 pmLambert-St Louis
Apr 9
STL7:45 amLambert-St Louis
23h 25m
2 stops
LGW1:10 pmLondon Gatwick
$2,182
Turkish Airlines
Mar 30
STN10:50 amLondon Stansted
40h 18m
2 stops
STL9:08 pmLambert-St Louis
Apr 9
STL7:45 amLambert-St Louis
26h 55m
2 stops
STN4:40 pmLondon Stansted
$2,302

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated March 23, 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

Cheapest round-trip

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 4/20

1:25 pm-5:44 pm

1 stop34h 19m

Lambert-St Louis

Thu 4/30

1:46 pm-7:10 am

1 stop11h 24m

$763

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/2

2:30 pm-11:51 pm

2 stops15h 21m

Lambert-St Louis

Wed 9/23

9:46 am-8:00 am

1 stop16h 14m

$764

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 4/20

9:20 am-9:19 pm

1 stop17h 59m

Lambert-St Louis

Thu 4/30

1:46 pm-7:10 am

1 stop11h 24m

$776
Quickest round-trip

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/2

4:25 pm-7:30 pm

Nonstop9h 05m

Lambert-St Louis

Wed 9/23

4:47 pm-9:25 am

1 stop10h 38m

$783

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/2

4:25 pm-7:30 pm

Nonstop9h 05m

Lambert-St Louis

Wed 9/23

12:47 pm-6:55 am

1 stop12h 08m

$795

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 4/24

2:00 pm-6:50 am

2 stops22h 50m

Lambert-St Louis

Fri 5/8

4:19 pm-10:00 am

1 stop35h 41m

$795

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 4/24

2:00 pm-11:19 pm

1 stop15h 19m

Lambert-St Louis

Fri 5/8

4:19 pm-10:00 am

1 stop35h 41m

$824

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 4/14

8:25 am-8:44 pm

2 stops18h 19m

Lambert-St Louis

Thu 5/14

10:19 am-7:55 am

2 stops15h 36m

$949

LondonSt. Louis

LCY - STL

LCYSTL

London City

Mon 4/20

8:25 am-8:44 pm

2 stops18h 19m

Lambert-St Louis

Thu 4/30

12:23 pm-7:55 am

2 stops13h 32m

$990

BirminghamSt. Louis

BHX - STL

BHXSTL

Birmingham

Tue 5/5

5:55 am-9:13 pm

2 stops21h 18m

Lambert-St Louis

Tue 5/12

7:09 pm-5:35 pm

2 stops16h 26m

$1,328

Flights are sorted by cheapest round-trip 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?

In general, January is the cheapest month to fly from United Kingdom to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $919. The month of February is another great option to travel to St. Louis, with average flight prices from United Kingdom averaging around $919.

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 $988 when searching weeks out. 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 $869 on momondo.

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

There are 3 cabin classes 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 13% 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

Fastest flight time

9h 05m

Direct flights

Mon, Wed, Thu and Sat

Airports in St. Louis

1 airport
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 were last updated today.

  • 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 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 United Kingdom to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • 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
British AirwaysPriceFrom $555Free CancellationRating
6.7
7,813 reviews
Search British Airways flights
United AirlinesPriceFrom $654Free CancellationRating
7.4
9,462 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from United Kingdom.

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?

momondo provides multiple filters to help you find the best flight to St. Louis from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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

An easier way to manage your St. Louis trip

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