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St. Louis

$419+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap 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 July 30, 2025.

Round-trip from

$845
(The Travel House)

One-way from

$419
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,170
From United Kingdom to Lambert-St Louis
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One-way flight from United Kingdom to Lambert-St Louis
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Highest demand for flights based on searches. 3% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 8/232:00 pmLGW - STL
1 stop29h 07mMultiple Airlines
Tue 9/27:54 pmSTL - LGW
2 stops33h 01mMultiple Airlines
Deal found 7/30$844
This The Travel House deal was found by Cheapflights users on 7/30. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:40 amLHR - STL
2 stops21h 22mScandinavian Airlines
Wed 9/243:36 pmSTL - LHR
2 stops20h 54mScandinavian Airlines
Deal found 7/30$845
This Mytrip deal was found by Cheapflights users on 7/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amLHR - STL
3 stops35h 21mMultiple Airlines
Thu 9/1812:05 pmSTL - LHR
3 stops36h 25mMultiple Airlines
Deal found 7/27$911
This Booking.com deal was found by Cheapflights users on 7/30. 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.
Sat 9/136:50 amLHR - STL
2 stops14h 28mAir Canada
Sat 9/201:30 pmSTL - LHR
1 stop11h 00mAir Canada
Deal found 7/30$925
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/106:30 amLHR - STL
1 stop13h 00mUnited Airlines
Mon 9/229:17 amSTL - LHR
1 stop15h 03mUnited Airlines
Deal found 7/30$929
This ChecknFly deal was found by Cheapflights users on 7/29. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:10 pmLHR - STL
2 stops25h 42mFinnair
Wed 9/247:23 amSTL - LHR
1 stop17h 57mFinnair
Deal found 7/29$939
This Expedia deal was found by Cheapflights users on 7/30. 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.
Tue 10/78:45 amLCY - STL
2 stops21h 12mLufthansa
Tue 10/145:28 pmSTL - LCY
2 stops16h 57mLufthansa
Deal found 7/30$968
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:05 amLTN - STL
2 stops19h 52mMultiple Airlines
Thu 9/181:30 pmSTL - LTN
2 stops13h 45mMultiple Airlines
Deal found 7/28$987
This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:25 pmLCY - STL
2 stops30h 41mBritish Airways
Wed 10/810:36 amSTL - LCY
2 stops23h 54mBritish Airways
Deal found 7/29$991
This Mytrip deal was found by Cheapflights users on 7/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/118:30 amLHR - STL
2 stops19h 02mLufthansa
Thu 9/187:04 pmSTL - LHR
2 stops15h 36mLufthansa
Deal found 7/27$1,006
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Fri 8/294:55 pmMAN - STL
2 stops50h 12mMultiple Airlines
Fri 9/53:30 pmSTL - MAN
1 stop19h 50mMultiple Airlines
Deal found 7/30$1,016
This Scandinavian Airlines deal was found by Cheapflights users on 7/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:10 pmBHX - STL
2 stops31h 54mScandinavian Airlines
Sat 11/151:30 pmSTL - BHX
2 stops23h 00mScandinavian Airlines
Deal found 7/29$1,020

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 July 30, 2025.
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

LGW - STL

LGWSTL

London Gatwick

Sat 8/23

2:00 pm-1:07 pm

1 stop29h 07m

Lambert-St Louis

Tue 9/2

7:54 pm-10:55 am

2 stops33h 01m

$844

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/3

6:40 am-10:02 pm

2 stops21h 22m

Lambert-St Louis

Wed 9/24

3:36 pm-6:30 pm

2 stops20h 54m

$845

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 9/11

6:00 am-11:21 am

3 stops35h 21m

Lambert-St Louis

Thu 9/18

12:05 pm-6:30 am

3 stops36h 25m

$911

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 9/13

6:50 am-3:18 pm

2 stops14h 28m

Lambert-St Louis

Sat 9/20

1:30 pm-6:30 am

1 stop11h 00m

$925

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/10

6:30 am-1:30 pm

1 stop13h 00m

Lambert-St Louis

Sat 9/20

12:35 pm-11:45 am

1 stop17h 10m

$929

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 9/3

8:10 pm-3:52 pm

2 stops25h 42m

Lambert-St Louis

Wed 9/24

7:23 am-7:20 am

1 stop17h 57m

$939

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 10/7

8:45 am-11:57 pm

2 stops21h 12m

Lambert-St Louis

Tue 10/14

5:28 pm-4:25 pm

2 stops16h 57m

$968

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Thu 9/11

6:05 am-7:57 pm

2 stops19h 52m

Lambert-St Louis

Thu 9/18

1:30 pm-9:15 am

2 stops13h 45m

$987

LondonSt. Louis

LCY - STL

LCYSTL

London City

Mon 9/29

8:25 pm-9:06 pm

2 stops30h 41m

Lambert-St Louis

Wed 10/8

10:36 am-4:30 pm

2 stops23h 54m

$991

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 9/11

8:30 am-9:32 pm

2 stops19h 02m

Lambert-St Louis

Thu 9/18

7:04 pm-4:40 pm

2 stops15h 36m

$1,006

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 56 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, August is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of $311). Flying from United Kingdom to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from GB to STL?

Find hourly flight availability from United Kingdom to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

When flying from United Kingdom to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 30, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Finnair 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.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $681. Users have also found prices from $902 and $914 on Aer Lingus and Lufthansa, respectively.

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

    When deciding which route to take from United Kingdom to St. Louis consider London Heathrow - Lambert-St Louis, Birmingham - Lambert-St Louis or London Gatwick - Lambert-St Louis as they are the most popular.

  • 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, August is the cheapest month in which you can book a flight from United Kingdom to St. Louis (average of $311). Flying from United Kingdom to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Alternative routes for United Kingdom to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from United Kingdom to St. Louis

Discover the top 4 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$555Average$1,226FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$925Average$925FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$952Average$1,220FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$1,146Average$1,290FlexibilityNo cancel feeOn-time72%

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