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$259+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$696
(United Airlines)

One-way from

$259
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$773
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
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Highest demand for flights based on searches. 15% potential increase in price ($170 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 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 24, 2025.

This United Airlines deal was found by Cheapflights users on 4/22. 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 5/65:29 pmSTL - MAN
2 stops34h 56mUnited Airlines
Fri 5/96:05 amMAN - STL
2 stops33h 53mUnited Airlines
Deal found 4/22$696
This Gotogate deal was found by Cheapflights users on 4/22. 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.
Wed 9/31:30 pmSTL - LHR
1 stop14h 05mMultiple Airlines
Wed 10/16:50 amLHR - STL
2 stops19h 07mMultiple Airlines
Deal found 4/22$720
This FlightHub deal was found by Cheapflights users on 4/22. 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 8/201:30 pmSTL - LHR
2 stops22h 10mScandinavian Airlines
Wed 8/276:40 amLHR - STL
2 stops22h 59mScandinavian Airlines
Deal found 4/22$722
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/78:15 pmSTL - LGW
2 stops31h 45mMultiple Airlines
Wed 5/212:00 pmLGW - STL
1 stop15h 44mMultiple Airlines
Deal found 4/22$730
This Virgin Atlantic deal was found by Cheapflights users on 4/22. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/612:51 pmSTL - MAN
1 stop13h 44mVirgin Atlantic
Fri 5/912:35 pmMAN - STL
1 stop14h 04mVirgin Atlantic
Deal found 4/22$733
This Delta deal was found by Cheapflights users on 4/22. 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 5/612:51 pmSTL - MAN
1 stop13h 44mDelta
Fri 5/92:15 pmMAN - STL
2 stops25h 20mDelta
Deal found 4/22$737
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/209:15 amSTL - EDI
1 stop16h 05mAir Canada
Thu 9/49:00 amEDI - STL
2 stops31h 40mAir Canada
Deal found 4/22$740
This United Airlines deal was found by Cheapflights users on 4/22. 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 10/2212:28 pmSTL - EDI
1 stop13h 57mUnited Airlines
Wed 11/59:25 amEDI - STL
1 stop13h 15mUnited Airlines
Deal found 4/22$747
This Delta deal was found by Cheapflights users on 4/22. 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.
Mon 8/2511:51 amSTL - LGW
2 stops16h 09mDelta
Thu 9/412:00 pmLGW - STL
2 stops17h 39mDelta
Deal found 4/22$750
This Cheapflightsfares deal was found by Cheapflights users on 4/21. 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 8/204:52 pmSTL - LHR
1 stop11h 38mIberia
Wed 8/273:30 pmLHR - STL
1 stop14h 19mIberia
Deal found 4/21$755
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/216:25 amSTL - EDI
1 stop18h 45mAmerican Airlines
Tue 9/3011:35 amEDI - STL
2 stops17h 48mAmerican Airlines
Deal found 4/22$759
This United Airlines deal was found by Cheapflights users on 4/22. 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 9/31:30 pmSTL - LHR
1 stop11h 00mUnited Airlines
Wed 9/246:30 amLHR - STL
1 stop13h 00mUnited Airlines
Deal found 4/22$760

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 24, 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

Tue 5/6

5:29 pm-10:25 am

2 stops34h 56m

Manchester

Fri 5/9

6:05 am-9:58 am

2 stops33h 53m

$696

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Wed 5/7

8:15 pm-10:00 am

2 stops31h 45m

London Gatwick

Wed 5/21

2:00 pm-11:44 pm

1 stop15h 44m

$730

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Tue 5/6

12:51 pm-8:35 am

1 stop13h 44m

Manchester

Fri 5/9

12:35 pm-8:39 pm

1 stop14h 04m

$733

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Tue 5/6

12:51 pm-8:35 am

1 stop13h 44m

Manchester

Fri 5/9

2:15 pm-9:35 am

2 stops25h 20m

$737

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 8/25

11:51 am-10:00 am

2 stops16h 09m

London Gatwick

Thu 9/4

12:00 pm-11:39 pm

2 stops17h 39m

$750

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Mon 10/13

7:23 am-4:30 pm

2 stops27h 07m

London City

Thu 10/23

5:05 pm-8:19 pm

2 stops33h 14m

$819

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 5/21

7:30 am-11:50 am

1 stop22h 20m

London Heathrow

Wed 5/28

6:30 am-1:30 pm

1 stop13h 00m

$836

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Mon 8/25

5:30 pm-6:35 pm

2 stops19h 05m

London City

Thu 9/4

8:45 am-7:39 pm

2 stops16h 54m

$839

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Wed 5/14

1:09 pm-9:20 am

2 stops14h 11m

Edinburgh Turnhouse

Wed 5/21

9:00 am-11:38 pm

1 stop20h 38m

$840

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 5/21

7:30 am-8:35 am

2 stops19h 05m

London Heathrow

Wed 5/28

8:40 am-7:58 pm

2 stops17h 18m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 57 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 24, 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 24, 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
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,442 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
642 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

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?

    $466 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on British Airways and KLM, with prices starting from $484 and $488, 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 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$596Average$878FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$625Average$1,027FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$642Average$1,009FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$647Average$875FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$669Average$1,102FlexibilityNo cancel feeOn-time77%
KLMCheapest$669Average$950FlexibilityNo cancel feeOn-time75%
IberiaCheapest$671Average$928FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$674Average$977FlexibilityNo cancel feeOn-time72%
DeltaCheapest$682Average$1,038FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$696Average$984FlexibilityNo cancel feeOn-time76%

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