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$276+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Jan 12 — Jan 191
Mon 1/12
Mon 1/19
1 adult, Economy
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Cheap 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 December 13, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/12. 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.
Fri 12/123:50 pmSTL - LHR
1 stop11h 55mLufthansa
Fri 12/197:25 amLHR - STL
1 stop15h 02mLufthansa
Deal found 12/12$684
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Fri 12/121:00 pmSTL - LHR
1 stop12h 55mAustrian Airlines
Fri 12/197:25 amLHR - STL
1 stop16h 29mAustrian Airlines
Deal found 12/11$690
This Gotogate deal was found by Cheapflights users on 12/11. 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.
Mon 12/294:05 pmSTL - LHR
1 stop32h 25mMultiple Airlines
Mon 1/126:00 pmLHR - STL
1 stop27h 29mMultiple Airlines
Deal found 12/11$692
This Mytrip deal was found by Cheapflights users on 12/11. 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 12/294:05 pmSTL - LHR
2 stops22h 30mAir Canada
Mon 1/129:00 amLHR - STL
2 stops36h 29mAir Canada
Deal found 12/11$705
This Mytrip deal was found by Cheapflights users on 12/11. 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 12/123:19 pmSTL - LHR
2 stops14h 01mMultiple Airlines
Fri 12/197:25 amLHR - STL
1 stop16h 29mMultiple Airlines
Deal found 12/11$706
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Thu 12/116:42 pmSTL - LHR
2 stops30h 28mUnited Airlines
Thu 12/1810:25 amLHR - STL
1 stop13h 29mUnited Airlines
Deal found 12/11$711
This Travelocity deal was found by Cheapflights users on 12/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:05 pmSTL - LHR
1 stop13h 15mMultiple Airlines
Tue 1/68:05 pmLHR - STL
2 stops49h 24mMultiple Airlines
Deal found 12/11$790
This oojo deal was found by Cheapflights users on 12/12. 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 12/285:40 amSTL - LHR
1 stop20h 35mBritish Airways
Wed 1/77:25 pmLHR - STL
2 stops33h 19mBritish Airways
Deal found 12/12$868
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Fri 12/123:19 pmSTL - LHR
2 stops13h 06mUnited Airlines
Fri 12/197:25 amLHR - STL
2 stops17h 57mUnited Airlines
Deal found 12/12$883
This oojo deal was found by Cheapflights users on 12/11. 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 12/292:06 pmSTL - LGW
2 stops22h 54mIberia
Mon 1/1211:45 amLGW - STL
2 stops39h 30mIberia
Deal found 12/11$1,114
This oojo deal was found by Cheapflights users on 12/11. 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 12/292:06 pmSTL - LCY
2 stops18h 29mIberia
Mon 1/127:15 pmLCY - STL
2 stops32h 00mIberia
Deal found 12/11$1,128
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/133:30 pmSTL - LGW
1 stop12h 35mMultiple Airlines
Mon 12/152:00 pmLGW - STL
1 stop14h 33mMultiple Airlines
Deal found 12/12$1,322

Find 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 December 13, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$498
(oojo)

One-way from

$276
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,049

Good round-trip deal

$675 or less

Good one-way deal

$280 or less
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.
Search Deals
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. 24% potential increase in price ($285 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to United Kingdom.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to United Kingdom.
Search Deals

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 December 13, 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. LouisInverness

STL - INV

STLINV

Lambert-St Louis

Thu 2/19

10:04 am-10:00 am

2 stops17h 56m

Inverness

Thu 2/26

11:45 am-10:54 pm

2 stops17h 09m

$498

St. LouisInverness

STL - INV

STLINV

Lambert-St Louis

Thu 1/22

5:04 pm-7:40 pm

2 stops20h 36m

Inverness

Thu 1/29

7:45 pm-6:14 pm

2 stops28h 29m

$498

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Thu 1/8

2:54 pm-4:40 pm

2 stops19h 46m

Glasgow Intl

Thu 1/15

6:35 am-10:55 pm

2 stops22h 20m

$606

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Mon 1/26

12:11 pm-9:50 am

2 stops15h 39m

Glasgow Intl

Mon 2/2

11:35 am-10:59 pm

2 stops17h 24m

$606

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Mon 2/9

6:44 pm-3:15 pm

2 stops14h 31m

Edinburgh Turnhouse

Mon 2/23

4:10 pm-10:09 pm

2 stops35h 59m

$609

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Fri 2/6

5:04 pm-3:20 pm

2 stops16h 16m

Edinburgh Turnhouse

Fri 2/13

10:55 am-10:54 pm

2 stops17h 59m

$609

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Fri 1/30

9:57 am-7:55 am

2 stops15h 58m

Edinburgh Turnhouse

Tue 2/3

9:25 am-10:58 pm

2 stops19h 33m

$619

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Thu 1/8

2:54 pm-10:45 am

2 stops13h 51m

Glasgow Intl

Thu 1/15

6:35 am-7:29 pm

2 stops18h 54m

$620

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Sun 3/1

6:10 am-10:40 am

2 stops22h 30m

Edinburgh Turnhouse

Mon 3/9

10:45 am-8:43 pm

1 stop14h 58m

$621

St. LouisManchester

STL - MAN

STLMAN

Lambert-St Louis

Wed 3/18

7:10 am-10:30 am

1 stop22h 20m

Manchester

Thu 3/26

1:30 pm-11:42 pm

1 stop15h 12m

$622

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

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, December is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $522). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $768). 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 December 13, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to United Kingdom at noon. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from St. Louis to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to United Kingdom. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to United Kingdom flight should consider departing on Monday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 13, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,006 reviews
Delta
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,094 reviews
Delta
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,052 reviews
Delta
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,049 reviews
Delta
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,571 reviews
Delta
7.9
Good
8,006 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Boarding

8.1

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from St. Louis to United Kingdom?

    For as low as $620, British Airways can have you in United Kingdom from St. Louis in 13h 51m. Airlines will cover a distance of 3914 mi. This flight may include one or multiple stops.

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

    $397 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $418 and $422, 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.

  • What are the cheapest flights from St. Louis to United Kingdom?

    Looking at all options, your cheapest flight can be booked for $278. While the most popular route (Lambert-St Louis - London Heathrow) can be booked for $585 on average, our data indicates $734 when flying from St. Louis to United Kingdom.

  • 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, December is the cheapest month in which you can book a flight from St. Louis to United Kingdom (average of $522). Flying from St. Louis to United Kingdom in June is currently the most expensive (average of $768). 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 December 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$529Average$856FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$573Average$945FlexibilityNo cancel feeOn-time67%
DeltaCheapest$577Average$928FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$580Average$902FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$580Average$838FlexibilityNo cancel feeOn-time70%
IberiaCheapest$597Average$971FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$602Average$987FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$615Average$940FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$634Average$892FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$670Average$902FlexibilityNo cancel feeOn-time76%

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