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$277+ Cheap flights from St. Louis (STL) to the United Kingdom

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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from St. Louis to United Kingdom

Keep the following information in mind while searching for St. Louis to United Kingdom flight deals. Data was last updated July 29, 2025.

Round-trip from

$552
(oojo)

One-way from

$277
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,210
From Lambert-St Louis to United Kingdom
Search Deals
One-way flight from Lambert-St Louis to United Kingdom
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($246 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from St. Louis to United Kingdom

Cheapest flights from St. Louis to United Kingdom
Explore the most affordable flight options available from St. Louis to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/241:15 pmSTL - LHR
2 stops17h 00mBritish Airways
Fri 9/57:00 amLHR - STL
2 stops20h 06mBritish Airways
Deal found 7/28$552
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.
Mon 8/251:30 pmSTL - LTN
2 stops20h 30mMultiple Airlines
Mon 9/19:55 pmLTN - STL
3 stops27h 43mMultiple Airlines
Deal found 7/28$554
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.
Mon 8/251:30 pmSTL - EDI
2 stops21h 55mMultiple Airlines
Mon 9/111:35 pmEDI - STL
2 stops26h 22mMultiple Airlines
Deal found 7/28$554
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:05 pmSTL - LHR
1 stop13h 45mMultiple Airlines
Mon 9/227:30 pmLHR - STL
2 stops26h 14mMultiple Airlines
Deal found 7/28$557
This Iberia deal was found by Cheapflights users on 7/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/242:15 pmSTL - LHR
1 stop11h 05mIberia
Fri 10/3111:25 amLHR - STL
2 stops26h 39mIberia
Deal found 7/26$561
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.
Mon 8/254:00 pmSTL - STN
2 stops18h 05mMultiple Airlines
Mon 9/110:00 pmSTN - STL
3 stops27h 38mMultiple Airlines
Deal found 7/28$562
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:15 amSTL - LHR
1 stop25h 05mUnited Airlines
Mon 9/223:50 pmLHR - STL
1 stop29h 28mUnited Airlines
Deal found 7/29$565
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:28 pmSTL - LCY
2 stops22h 02mBritish Airways
Wed 9/177:00 amLCY - STL
2 stops20h 06mBritish Airways
Deal found 7/27$572
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:30 pmSTL - LHR
1 stop11h 00mAir Canada
Sat 8/309:30 amLHR - STL
2 stops16h 15mAir Canada
Deal found 7/29$572
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:26 pmSTL - LHR
1 stop11h 19mDelta
Mon 9/226:15 amLHR - STL
2 stops16h 22mDelta
Deal found 7/29$574
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.
Mon 8/254:00 pmSTL - LGW
2 stops14h 45mMultiple Airlines
Mon 9/18:40 pmLGW - STL
2 stops29h 17mMultiple Airlines
Deal found 7/28$601
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:28 pmSTL - LCY
2 stops16h 57mLufthansa
Wed 10/228:45 amLCY - STL
2 stops21h 12mLufthansa
Deal found 7/26$622

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to United Kingdom 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 29, 2025.
Use the filters below to find and compare flights from St. Louis to the United Kingdom that are best for you.

Fly from

St. Louis

Fly to

United Kingdom

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 8/24

1:15 pm-12:15 pm

2 stops17h 00m

London Heathrow

Fri 9/5

7:00 am-9:06 pm

2 stops20h 06m

$552

St. LouisLondon

STL - LTN

STLLTN

Lambert-St Louis

Mon 8/25

1:30 pm-4:00 pm

2 stops20h 30m

London Luton

Mon 9/1

9:55 pm-7:38 pm

3 stops27h 43m

$554

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Mon 8/25

1:30 pm-5:25 pm

2 stops21h 55m

Edinburgh Turnhouse

Mon 9/1

11:35 pm-7:57 pm

2 stops26h 22m

$554

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/9

4:05 pm-11:50 am

1 stop13h 45m

London Heathrow

Mon 9/22

7:30 pm-3:44 pm

2 stops26h 14m

$557

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 10/24

2:15 pm-7:20 am

1 stop11h 05m

London Heathrow

Fri 10/31

11:25 am-9:04 am

2 stops26h 39m

$561

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Mon 8/25

4:00 pm-4:05 pm

2 stops18h 05m

London Stansted

Mon 9/1

10:00 pm-7:38 pm

3 stops27h 38m

$562

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 9/10

5:15 am-12:20 pm

1 stop25h 05m

London Heathrow

Mon 9/22

3:50 pm-3:18 pm

1 stop29h 28m

$565

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/20

1:30 pm-6:30 am

1 stop11h 00m

London Heathrow

Sat 8/30

9:30 am-7:45 pm

2 stops16h 15m

$572

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Wed 9/10

12:28 pm-4:30 pm

2 stops22h 02m

London City

Wed 9/17

7:00 am-9:06 pm

2 stops20h 06m

$572

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 9/9

1:26 pm-6:45 am

1 stop11h 19m

London Heathrow

Mon 9/22

6:15 am-4:37 pm

2 stops16h 22m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 50 results
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Best time to book a flight from St. Louis to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from St. Louis 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 St. Louis to the United Kingdom

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $661). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $1,097). 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 STL to GB?

Find hourly flight availability from St. Louis to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

When flying from St. Louis to United Kingdom, 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 United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Delta, KLM, and United Airlines from St. Louis to the United Kingdom 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
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,925 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to United Kingdom. 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 from for flights from St. Louis to United Kingdom?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to United Kingdom. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    $394 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and Lufthansa, with prices starting from $401 and $442, respectively.

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

    The most popular flight routes from St. Louis to United Kingdom are Lambert-St Louis - London Heathrow, Lambert-St Louis - London Gatwick and Lambert-St Louis - Edinburgh Turnhouse.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to United Kingdom 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 St. Louis to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $661). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $1,097). 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

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Alternative routes for St. Louis to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from St. Louis to United Kingdom

Discover the top 10 airlines that operate flights from St. Louis to United Kingdom. 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$529Average$839FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$597Average$842FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$627Average$1,021FlexibilityNo cancel feeOn-time67%
DeltaCheapest$638Average$951FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$640Average$875FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
IberiaCheapest$669Average$972FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$672Average$922FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$696Average$987FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$699Average$897FlexibilityNo cancel feeOn-time72%

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