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Cheap flights from the United Kingdom to St. Louis from $333

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 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
American Airlines Logo
12:30 pm - 8:06 amLGW-STL
49h 36m2 stops
American Airlines Logo
7:05 pm - 9:00 amSTL-LGW
56h 55m2 stops
$731American Airlines
Find Deal
jue., mar. 5 - lun., mar. 9
British Airways Logo
9:55 am - 6:34 pmLHR-STL
14h 39m1 stop
British Airways Logo
3:54 pm - 9:15 amSTL-LHR
11h 21m1 stop
$751British Airways
Find Deal
mar., ene. 13 - vie., ene. 23
British Airways Logo
6:45 am - 10:44 pmLHR-STL
21h 59m2 stops
British Airways Logo
11:55 am - 6:50 amSTL-LHR
12h 55m1 stop
$761British Airways
Find Deal
mar., ene. 13 - vie., ene. 23
Delta Logo
11:45 am - 11:07 pmEDI-STL
17h 22m2 stops
Delta Logo
10:45 am - 10:40 amSTL-EDI
17h 55m2 stops
$768Delta
Find Deal
vie., nov. 7 - lun., nov. 10
American Airlines Logo
8:20 am - 6:19 pmLHR-STL
15h 59m1 stop
American Airlines Logo
2:48 pm - 7:50 amSTL-LHR
12h 02m1 stop
$773American Airlines
Find Deal
jue., mar. 5 - lun., mar. 9
Delta Logo
5:50 am - 11:23 pmEDI-STL
23h 33m2 stops
Delta Logo
6:00 am - 9:20 amSTL-EDI
21h 20m2 stops
$775Delta
Find Deal
vie., nov. 28 - vie., dic. 5
KLM Logo
11:45 am - 8:39 pmLHR-STL
14h 54m2 stops
KLM Logo
11:51 am - 6:50 amSTL-LHR
12h 59m2 stops
$778KLM
Find Deal
mar., ene. 13 - vie., ene. 23
KLM Logo
10:10 am - 11:44 pmLHR-STL
19h 34m2 stops
KLM Logo
12:49 pm - 7:05 amSTL-LHR
12h 16m1 stop
$1,021KLM
Find Deal
lun., nov. 17 - jue., nov. 20
Lufthansa Logo
12:30 pm - 7:16 pmEDI-STL
12h 46m1 stop
Lufthansa Logo
11:49 am - 7:55 amSTL-EDI
14h 06m1 stop
$1,163Lufthansa
Find Deal
vie., nov. 7 - lun., nov. 10
Lufthansa Logo
12:30 pm - 7:16 pmEDI-STL
12h 46m1 stop
Lufthansa Logo
1:10 pm - 12:00 pmSTL-EDI
16h 50m2 stops
$1,171Lufthansa
Find Deal
vie., nov. 7 - lun., nov. 10

United Airlines flights from United Kingdom to St. Louis

Our best United Airlines deals on United Kingdom to St. Louis flight tickets
United Airlines
Nov 28
LHR6:30 amLondon Heathrow
13h 25m
1 stop
STL1:55 pmLambert-St Louis
Dec 5
STL3:19 pmLambert-St Louis
10h 36m
1 stop
LHR7:55 amLondon Heathrow
$1,084
Find similar
United Airlines
Feb 20
EDI9:25 amEdinburgh Turnhouse
13h 34m
1 stop
STL4:59 pmLambert-St Louis
Feb 24
STL1:11 pmLambert-St Louis
12h 44m
2 stops
EDI7:55 amEdinburgh Turnhouse
$1,185
Find similar
United Airlines
Feb 20
EDI9:25 amEdinburgh Turnhouse
13h 34m
1 stop
STL4:59 pmLambert-St Louis
Feb 24
STL1:11 pmLambert-St Louis
12h 44m
2 stops
EDI7:55 amEdinburgh Turnhouse
$1,187
Find similar

Turkish Airlines flights from United Kingdom to St. Louis

Our best Turkish Airlines deals on United Kingdom to St. Louis flight tickets
Turkish Airlines
Nov 24
LGW10:20 amLondon Gatwick
35h 26m
2 stops
STL3:46 pmLambert-St Louis
Dec 1
STL5:24 pmLambert-St Louis
23h 11m
2 stops
LGW10:35 pmLondon Gatwick
$1,359
Find similar
Turkish Airlines
Oct 21
LGW2:00 pmLondon Gatwick
30h 27m
2 stops
STL2:27 pmLambert-St Louis
Dec 9
STL5:27 pmLambert-St Louis
40h 43m
2 stops
LGW4:10 pmLondon Gatwick
$1,544
Find similar

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 octubre 16, 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

jue. 3/5

12:30 pm-8:06 am

2 stops49h 36m

Lambert-St Louis

lun. 3/9

7:05 pm-9:00 am

2 stops56h 55m

$731

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

mar. 1/13

9:55 am-6:34 pm

1 stop14h 39m

Lambert-St Louis

vie. 1/23

3:54 pm-9:15 am

1 stop11h 21m

$751

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

mar. 1/13

6:45 am-10:44 pm

2 stops21h 59m

Lambert-St Louis

vie. 1/23

11:55 am-6:50 am

1 stop12h 55m

$761

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

vie. 11/7

11:45 am-11:07 pm

2 stops17h 22m

Lambert-St Louis

lun. 11/10

10:45 am-10:40 am

2 stops17h 55m

$768

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

jue. 3/5

8:20 am-6:19 pm

1 stop15h 59m

Lambert-St Louis

lun. 3/9

2:48 pm-7:50 am

1 stop12h 02m

$773

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

vie. 11/28

5:50 am-11:23 pm

2 stops23h 33m

Lambert-St Louis

vie. 12/5

6:00 am-9:20 am

2 stops21h 20m

$775

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

mar. 1/13

11:45 am-8:39 pm

2 stops14h 54m

Lambert-St Louis

vie. 1/23

11:51 am-6:50 am

2 stops12h 59m

$778

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

lun. 11/17

10:10 am-11:44 pm

2 stops19h 34m

Lambert-St Louis

jue. 11/20

12:49 pm-7:05 am

1 stop12h 16m

$1,021

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

vie. 11/7

12:30 pm-7:16 pm

1 stop12h 46m

Lambert-St Louis

lun. 11/10

11:49 am-7:55 am

1 stop14h 06m

$1,163

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

vie. 11/7

12:30 pm-7:16 pm

1 stop12h 46m

Lambert-St Louis

lun. 11/10

1:10 pm-12:00 pm

2 stops16h 50m

$1,171

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, March 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 $740. The month of January is another great option to travel to St. Louis, with average flight prices from United Kingdom averaging around $753.

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

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $952. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,371. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

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

Flying to St. Louis from United Kingdom at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,075 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,229 per ticket.

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 $977 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 $875 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?

No. A direct flight is the cheapest option for a flight between United Kingdom to St. Louis.

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

Direct flights

None
There are no direct flights from United Kingdom to St. Louis. There are no popular flight routes from United Kingdom to St. Louis.
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
7,457 reviews
Search British Airways flights
LufthansaPriceFrom $925Free CancellationRating
6.8
7,497 reviews
Search Lufthansa 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
Wentzville
Collinsville
Fenton
St. Peters
Alton
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

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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