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$244+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
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 11, 2025.

Round-trip from

$621
(Delta)

One-way from

$285
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$1,179
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 ($235 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 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 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 11, 2025.

This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 11/56:45 amSTL - MAN
2 stops18h 25mDelta
Fri 11/1412:00 pmMAN - STL
1 stop17h 39mDelta
Deal found 7/10$621
This Justfly.com deal was found by Cheapflights users on 7/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:29 pmSTL - MAN
2 stops15h 51mBritish Airways
Fri 11/149:00 amMAN - STL
2 stops17h 00mBritish Airways
Deal found 7/10$624
This Cheapflightsfares deal was found by Cheapflights users on 7/9. 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.
Sun 9/211:03 pmSTL - EDI
1 stop12h 07mBritish Airways
Tue 9/3011:35 amEDI - STL
1 stop15h 31mBritish Airways
Deal found 7/9$642
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Sat 8/94:45 pmSTL - EDI
2 stops35h 50mUnited Airlines
Fri 8/2211:15 amEDI - STL
2 stops29h 31mUnited Airlines
Deal found 7/10$650
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Mon 8/111:30 pmSTL - EDI
1 stop13h 35mAir Canada
Tue 8/2611:15 amEDI - STL
1 stop14h 45mAir Canada
Deal found 7/9$654
This FlightHub deal was found by Cheapflights users on 7/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:50 pmSTL - MAN
1 stop17h 00mLufthansa
Fri 11/146:05 amMAN - STL
1 stop13h 50mLufthansa
Deal found 7/10$654
This Booking.com deal was found by Cheapflights users on 7/10. 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 11/94:05 pmSTL - MAN
2 stops15h 10mMultiple Airlines
Fri 11/216:05 amMAN - STL
1 stop13h 50mMultiple Airlines
Deal found 7/10$655
This Cheapflightsfares deal was found by Cheapflights users on 7/10. 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.
Wed 7/305:27 pmSTL - LHR
1 stop13h 18mBritish Airways
Fri 8/81:25 pmLHR - STL
1 stop13h 22mBritish Airways
Deal found 7/10$669
This American Airlines deal was found by Cheapflights users on 7/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:03 pmSTL - EDI
2 stops13h 32mAmerican Airlines
Tue 9/3011:35 amEDI - STL
2 stops16h 18mAmerican Airlines
Deal found 7/9$669
This Iberia deal was found by Cheapflights users on 7/10. 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.
Sat 8/28:01 pmSTL - LHR
1 stop32h 19mIberia
Sat 10/1810:50 amLHR - STL
2 stops19h 04mIberia
Deal found 7/10$672
This Mytrip deal was found by Cheapflights users on 7/10. 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.
Fri 10/104:05 pmSTL - STN
2 stops19h 00mMultiple Airlines
Sat 10/1810:00 pmSTN - STL
2 stops21h 30mMultiple Airlines
Deal found 7/10$672
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Sat 10/111:30 pmSTL - LHR
2 stops13h 05mAir Canada
Sat 10/256:50 amLHR - STL
2 stops14h 28mAir Canada
Deal found 7/9$674

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 11, 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. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

1:03 pm-7:10 am

1 stop12h 07m

Edinburgh Turnhouse

Tue 9/30

11:35 am-9:06 pm

1 stop15h 31m

$642

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sat 8/9

4:45 pm-10:35 am

2 stops35h 50m

Edinburgh Turnhouse

Fri 8/22

11:15 am-10:46 am

2 stops29h 31m

$650

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Mon 8/11

1:30 pm-9:05 am

1 stop13h 35m

Edinburgh Turnhouse

Tue 8/26

11:15 am-8:00 pm

1 stop14h 45m

$654

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

8:03 pm-3:35 pm

2 stops13h 32m

Edinburgh Turnhouse

Tue 9/30

11:35 am-9:53 pm

2 stops16h 18m

$669

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 7/30

5:27 pm-12:45 pm

1 stop13h 18m

London Heathrow

Fri 8/8

1:25 pm-8:47 pm

1 stop13h 22m

$669

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sat 8/2

8:01 pm-10:20 am

1 stop32h 19m

London Heathrow

Sat 10/18

10:50 am-11:54 pm

2 stops19h 04m

$672

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Fri 10/10

4:05 pm-5:05 pm

2 stops19h 00m

London Stansted

Sat 10/18

10:00 pm-1:30 pm

2 stops21h 30m

$672

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sat 10/11

1:30 pm-8:35 am

2 stops13h 05m

London Heathrow

Sat 10/25

6:50 am-3:18 pm

2 stops14h 28m

$674

St. LouisLondon

STL - LTN

STLLTN

Lambert-St Louis

Fri 10/10

4:05 pm-3:45 pm

2 stops17h 40m

London Luton

Sat 10/18

10:10 pm-1:30 pm

2 stops21h 20m

$674

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 8/7

10:00 am-6:55 am

2 stops14h 55m

London Heathrow

Thu 8/14

8:00 am-7:31 pm

2 stops17h 31m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 60 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 $1,096). 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 11, 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 11, 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
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,951 reviews
Delta
8.0
Very good
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
1,372 reviews
Delta
8.0
Very good
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
8,846 reviews
Delta
8.0
Very good
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
653 reviews
Delta
8.0
Very good
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
3,896 reviews
Delta
8.0
Very good
7,951 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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 Air Canada. You may also be able to find cheap deals on United Airlines and British Airways, with prices starting from $401 and $421, 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 $1,096). 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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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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$597Average$837FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$624Average$970FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$637Average$859FlexibilityNo cancel feeOn-time71%
DeltaCheapest$638Average$945FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$641Average$916FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
IberiaCheapest$669Average$977FlexibilityNo cancel feeOn-time77%
KLMCheapest$687Average$869FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$696Average$971FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$699Average$897FlexibilityNo cancel feeOn-time72%

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