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$271+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$676
(Delta)

One-way from

$271
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$751
Provider with most accurate pricing for Lambert-St Louis-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-London (LON) flights.
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From Lambert-St Louis to United Kingdom
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One-way flight from Lambert-St Louis to United Kingdom
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($193 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 4, 2025.

This Delta deal was found by Cheapflights users on 4/3. 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 4/2311:15 amSTL - MAN
2 stops17h 05mDelta
Wed 4/3011:55 amMAN - STL
1 stop27h 41mDelta
Deal found 4/3$676
This British Airways deal was found by Cheapflights users on 4/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:59 pmSTL - EDI
2 stops15h 46mBritish Airways
Tue 9/3011:35 amEDI - STL
1 stop14h 46mBritish Airways
Deal found 4/3$697
This Delta deal was found by Cheapflights users on 4/4. 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 5/64:11 pmSTL - LHR
2 stops13h 14mDelta
Wed 5/146:30 amLHR - STL
2 stops16h 05mDelta
Deal found 4/4$698
This Air Canada deal was found by Cheapflights users on 4/4. 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.
Tue 10/141:30 pmSTL - LHR
1 stop11h 00mAir Canada
Wed 10/222:05 pmLHR - STL
2 stops31h 11mAir Canada
Deal found 4/4$699
This Scandinavian Airlines deal was found by Cheapflights users on 4/4. 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.
Wed 8/203:30 pmSTL - LHR
2 stops24h 10mScandinavian Airlines
Wed 8/276:40 amLHR - STL
2 stops22h 59mScandinavian Airlines
Deal found 4/4$700
This KLM deal was found by Cheapflights users on 4/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:05 pmSTL - EDI
1 stop11h 00mKLM
Tue 9/309:00 amEDI - STL
1 stop17h 47mKLM
Deal found 4/2$700
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Wed 4/235:41 pmSTL - LGW
1 stop34h 19mMultiple Airlines
Wed 4/302:00 pmLGW - STL
1 stop16h 04mMultiple Airlines
Deal found 4/4$700
This Booking.com deal was found by Cheapflights users on 4/2. 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 9/219:15 amSTL - EDI
1 stop16h 05mAir Canada
Tue 9/309:00 amEDI - STL
2 stops33h 20mAir Canada
Deal found 4/2$704
This United deal was found by Cheapflights users on 4/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:17 amSTL - EDI
2 stops19h 18mUnited Airlines
Tue 9/3012:30 pmEDI - STL
2 stops27h 57mUnited Airlines
Deal found 4/3$705
This KLM deal was found by Cheapflights users on 4/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:40 pmSTL - LHR
1 stop11h 30mKLM
Wed 8/2711:45 amLHR - STL
1 stop14h 45mKLM
Deal found 4/3$715
This Air Canada deal was found by Cheapflights users on 4/3. 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.
Fri 5/21:30 pmSTL - LHR
1 stop14h 30mMultiple Airlines
Fri 5/910:30 amLHR - STL
2 stops15h 28mMultiple Airlines
Deal found 4/3$716
This Cheapflightsfares deal was found by Cheapflights users on 4/3. 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 9/92:01 pmSTL - LHR
1 stop12h 59mIberia
Mon 9/2212:15 pmLHR - STL
1 stop14h 08mIberia
Deal found 4/3$719

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 April 4, 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. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Wed 4/23

11:15 am-10:20 am

2 stops17h 05m

Manchester

Wed 4/30

11:55 am-9:36 am

1 stop27h 41m

$676

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

7:59 pm-5:45 pm

2 stops15h 46m

Edinburgh Turnhouse

Tue 9/30

11:35 am-8:21 pm

1 stop14h 46m

$697

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 5/6

4:11 pm-11:25 am

2 stops13h 14m

London Heathrow

Wed 5/14

6:30 am-4:35 pm

2 stops16h 05m

$698

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 4/18

3:30 pm-9:00 pm

2 stops47h 30m

London Heathrow

Thu 5/8

9:30 am-7:58 pm

1 stop16h 28m

$699

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 8/20

3:30 pm-9:40 pm

2 stops24h 10m

London Heathrow

Wed 8/27

6:40 am-11:39 pm

2 stops22h 59m

$700

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

7:05 pm-12:05 pm

1 stop11h 00m

Edinburgh Turnhouse

Tue 9/30

9:00 am-8:47 pm

1 stop17h 47m

$700

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

9:15 am-7:20 am

1 stop16h 05m

Edinburgh Turnhouse

Tue 9/30

9:00 am-12:20 pm

2 stops33h 20m

$704

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 9/21

9:17 am-10:35 am

2 stops19h 18m

Edinburgh Turnhouse

Tue 9/30

12:30 pm-10:27 am

2 stops27h 57m

$705

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 8/19

5:40 pm-11:10 am

1 stop11h 30m

London Heathrow

Wed 8/27

11:45 am-8:30 pm

1 stop14h 45m

$715

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 5/2

1:30 pm-10:00 am

1 stop14h 30m

London Heathrow

Fri 5/9

10:30 am-7:58 pm

2 stops15h 28m

$716

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

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 $1,110). 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 April 4, 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.

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 April 4, 2025.
See what other customers who have flown with Delta, KLM and Air France from St. Louis to United Kingdom have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,619 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
637 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    $398 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Delta and British Airways, with prices starting from $451 and $455, 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 - London City.

  • 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 $1,110). 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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$596Average$882FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$625Average$994FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$642Average$1,014FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$647Average$876FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$649Average$1,126FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
KLMCheapest$669Average$950FlexibilityNo cancel feeOn-time75%
IberiaCheapest$671Average$954FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$674Average$1,061FlexibilityNo cancel feeOn-time72%
DeltaCheapest$682Average$1,025FlexibilityNo cancel feeOn-timeN/A

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