St. Louis

$285+ Cheap flights from the United Kingdom to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Feb 28 — Mar 71
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Cheap flight deals from United Kingdom to St. Louis

Cheapest flights from United Kingdom to St. Louis
Explore the most affordable flight options available from United Kingdom to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:30 am
LHR
-
STL
1 stop13h 25m
Lufthansa
Mon 3/95:41 pm
STL
-
LHR
1 stop11h 44m
Lufthansa
Deal found 1/27$580
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:00 am
LHR
-
STL
2 stops16h 14m
United Airlines
Tue 3/39:55 am
STL
-
LHR
2 stops14h 45m
United Airlines
Deal found 1/27$605
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:30 am
LHR
-
STL
1 stop13h 25m
United Airlines
Mon 3/911:25 am
STL
-
LHR
2 stops16h 00m
United Airlines
Deal found 1/27$606
This Cheapflightsfares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:35 am
LHR
-
STL
2 stops19h 48m
Lufthansa
Fri 2/271:11 pm
STL
-
LHR
1 stop10h 44m
Lufthansa
Deal found 1/27$612
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:50 am
LHR
-
STL
2 stops15h 13m
United Airlines
Mon 2/99:57 am
STL
-
LHR
1 stop13h 58m
United Airlines
Deal found 1/26$613
This Cheapflightsfares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:30 am
LHR
-
STL
1 stop12h 55m
Lufthansa
Tue 4/216:35 pm
STL
-
LHR
1 stop11h 10m
Lufthansa
Deal found 1/27$614
This TravelUp deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:45 am
LHR
-
STL
1 stop13h 07m
British Airways
Tue 3/36:18 pm
STL
-
LHR
1 stop11h 57m
British Airways
Deal found 1/27$618
This TravelUp deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:30 am
LHR
-
STL
1 stop12h 55m
Multiple Airlines
Fri 5/81:00 pm
STL
-
LHR
1 stop11h 30m
Multiple Airlines
Deal found 1/27$621
This Booking.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
LHR
-
STL
2 stops20h 05m
Air Canada
Fri 5/81:00 pm
STL
-
LHR
1 stop11h 30m
Air Canada
Deal found 1/27$625
This TravelUp deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:25 pm
LHR
-
STL
2 stops31h 38m
Virgin Atlantic
Mon 11/27:05 pm
STL
-
LHR
1 stop29h 20m
Virgin Atlantic
Deal found 1/27$627
This Expedia deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:05 pm
LCY
-
STL
2 stops26h 37m
KLM
Mon 3/912:04 pm
STL
-
LCY
2 stops14h 11m
KLM
Deal found 1/27$721
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/47:25 am
EDI
-
STL
2 stops19h 48m
United Airlines
Sun 2/81:15 pm
STL
-
EDI
2 stops12h 40m
United Airlines
Deal found 1/26$745

Find flight deals from United Kingdom to St. Louis

Keep the following information in mind while searching for United Kingdom to St. Louis flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$580
(Kiwi.com)

One-way from

$285
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$753

Good round-trip deal

$803 or less

Good one-way deal

$446 or less
Provider with most accurate pricing for London (LON)-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for London (LON)-Lambert-St Louis flights.
From United Kingdom to Lambert-St Louis
One-way flight from United Kingdom to Lambert-St Louis
Highest demand for flights based on searches. 12% potential increase in price ($136 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from United Kingdom to Lambert-St Louis.
Price to beat on a one-way flight from United Kingdom to Lambert-St Louis.

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from the United Kingdom to St. Louis that are best for you.

Fly from

United Kingdom

Fly to

St. Louis

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 2/24

9:00 am-7:14 pm

2 stops16h 14m

Lambert-St Louis

Tue 3/3

12:15 pm-9:10 am

2 stops14h 55m

$605

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 3/1

6:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Sun 3/15

7:00 pm-11:15 am

1 stop11h 15m

$606

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 3/13

6:30 am-2:55 pm

1 stop13h 25m

Lambert-St Louis

Fri 3/20

6:00 am-7:30 am

1 stop20h 30m

$606

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 3/1

6:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Mon 3/9

11:25 am-8:25 am

2 stops16h 00m

$606

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 2/20

6:35 am-8:23 pm

2 stops19h 48m

Lambert-St Louis

Fri 2/27

1:11 pm-5:55 am

1 stop10h 44m

$612

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 2/5

6:50 am-4:03 pm

2 stops15h 13m

Lambert-St Louis

Mon 2/9

9:57 am-5:55 am

1 stop13h 58m

$613

LondonSt. Louis

LCY - STL

LCYSTL

London City

Sun 3/1

8:05 pm-4:42 pm

2 stops26h 37m

Lambert-St Louis

Mon 3/9

12:04 pm-7:15 am

2 stops14h 11m

$721

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Fri 3/13

11:30 am-10:36 am

2 stops28h 06m

Lambert-St Louis

Fri 3/20

8:17 am-9:30 am

2 stops20h 13m

$747

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Fri 3/13

8:25 am-11:51 pm

1 stop20h 26m

Lambert-St Louis

Fri 3/20

5:41 pm-6:55 am

1 stop32h 14m

$762

EdinburghSt. Louis

EDI - STL

EDISTL

Edinburgh Turnhouse

Fri 3/13

11:30 am-6:00 pm

2 stops35h 30m

Lambert-St Louis

Fri 3/20

5:41 pm-6:55 am

1 stop32h 14m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to St. Louis

What is the cheapest month to book a flight from United Kingdom to St. Louis?

Currently, September is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of $543). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of $814). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 29, 2026.
Get a feel of what it's like to fly with United Airlines and British Airways from the United Kingdom to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to St. Louis from United Kingdom?

    If you book a flight to St. Louis from United Kingdom, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • How long is the flight from United Kingdom to St. Louis?

    For as low as $605, United Airlines can have you in St. Louis from United Kingdom in 16h 14m. United Kingdom and St. Louis are separated by a distance of 4186 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to St. Louis one-way?

    For one-way options, check prices for Finnair. According to our data, you can fly for as low as $438. Users have also found prices from $516 and $526 on British Airways and Lufthansa, respectively.

  • What are the most popular routes from United Kingdom to St. Louis?

  • What are the cheapest flights from United Kingdom to St. Louis?

    Looking for the cheapest flight from United Kingdom to St. Louis? While on average our users pay $725, our data indicates the cheapest price to be $438. The most popular route (London Heathrow - Lambert-St Louis), is priced around $580.

  • Can I find deals for flights from United Kingdom to St. Louis that include hotel bookings?

    Yes. In addition to deals on United Kingdom to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to St. Louis.

  • Can I find deals for business class flights from United Kingdom to St. Louis?

    Yes. Cheapflights offers flight deals from United Kingdom to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of $543). Flying from United Kingdom to St. Louis in July is currently the most expensive (average of $814). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 2 airlines flying from United Kingdom to St. Louis

Discover the top 2 airlines that operate flights from United Kingdom to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$555Average$874FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$654Average$1,162FlexibilityNo cancel feeOn-time69%

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