HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
United Kingdom

$331+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LHR
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to United Kingdom with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to United Kingdom

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to United Kingdom (GB0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$614
(oojo)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$824
Provider with most accurate pricing for Lambert-St Louis-London (LON) flight deals.
Search Deals
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. 19% potential increase in price ($226 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
Search Deals

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 January 30, 2025.

This oojo deal was found by Cheapflights users on 1/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2610:49 amSTL - INV
2 stops18h 16mBritish Airways
Wed 3/510:30 amINV - STL
2 stops18h 13mBritish Airways
Deal found 1/29$614
This oojo deal was found by Cheapflights users on 1/28. 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.
Sat 10/186:27 pmSTL - GLA
2 stops14h 28mBritish Airways
Fri 10/248:25 pmGLA - STL
2 stops29h 54mBritish Airways
Deal found 1/28$680
This Scandinavian Airlines deal was found by Cheapflights users on 1/30. 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 3/510:26 amSTL - LHR
2 stops26h 04mScandinavian Airlines
Wed 3/126:40 amLHR - STL
2 stops21h 51mScandinavian Airlines
Deal found 1/30$688
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Mon 3/106:58 pmSTL - LGW
2 stops34h 37mMultiple Airlines
Mon 3/172:00 pmLGW - STL
1 stop14h 49mMultiple Airlines
Deal found 1/30$695
This Finnair deal was found by Cheapflights users on 1/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1811:39 amSTL - GLA
2 stops20h 16mFinnair
Tue 3/253:20 pmGLA - STL
2 stops33h 10mFinnair
Deal found 1/29$711
This Air Canada deal was found by Cheapflights users on 1/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/53:50 pmSTL - LHR
1 stop14h 00mMultiple Airlines
Wed 3/129:30 amLHR - STL
2 stops34h 36mMultiple Airlines
Deal found 1/28$715
This American Airlines deal was found by Cheapflights users on 1/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:44 amSTL - INV
2 stops20h 31mMultiple Airlines
Mon 10/2011:20 amINV - STL
3 stops18h 05mMultiple Airlines
Deal found 1/29$715
This Cheapflightsfares deal was found by Cheapflights users on 1/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/243:48 pmSTL - LHR
1 stop9h 32mBritish Airways
Tue 4/299:15 amLHR - STL
1 stop11h 36mBritish Airways
Deal found 1/28$716
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/51:39 pmSTL - LHR
1 stop14h 01mUnited Airlines
Wed 3/126:30 amLHR - STL
1 stop13h 25mUnited Airlines
Deal found 1/28$720
This oojo deal was found by Cheapflights users on 1/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1911:39 amSTL - EDI
2 stops17h 11mBritish Airways
Wed 3/2610:05 amEDI - STL
2 stops17h 13mBritish Airways
Deal found 1/29$724
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:05 pmSTL - LHR
1 stop32h 30mAir Canada
Tue 10/216:00 amLHR - STL
2 stops19h 33mAir Canada
Deal found 1/28$726
This Booking.com deal was found by Cheapflights users on 1/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/263:45 pmSTL - GLA
1 stop14h 10mMultiple Airlines
Wed 3/51:00 pmGLA - STL
2 stops32h 06mMultiple Airlines
Deal found 1/29$744

Find flights from St. Louis to United Kingdom within your budget

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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisInverness

STL - INV

STLINV

Lambert-St Louis

Wed 2/26

12:00 pm-11:05 am

2 stops17h 05m

Inverness

Wed 3/5

10:30 am-10:43 pm

2 stops18h 13m

$614

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 3/5

10:26 am-6:30 pm

2 stops26h 04m

London Heathrow

Wed 3/12

6:40 am-11:31 pm

2 stops21h 51m

$688

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Mon 3/10

6:58 pm-10:35 am

2 stops34h 37m

London Gatwick

Mon 3/17

2:00 pm-11:49 pm

1 stop14h 49m

$695

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Tue 3/18

11:39 am-3:50 pm

2 stops23h 11m

Glasgow Intl

Tue 3/25

3:20 pm-7:30 pm

2 stops33h 10m

$710

St. LouisGlasgow

STL - GLA

STLGLA

Lambert-St Louis

Wed 2/26

6:00 pm-3:50 pm

2 stops15h 50m

Glasgow Intl

Wed 3/5

10:55 am-10:02 pm

2 stops17h 07m

$712

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 3/5

3:50 pm-11:50 am

1 stop14h 00m

London Heathrow

Wed 3/12

9:30 am-3:06 pm

2 stops34h 36m

$715

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 4/24

3:48 pm-7:20 am

1 stop9h 32m

London Heathrow

Tue 4/29

9:15 am-2:51 pm

1 stop11h 36m

$716

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 3/5

1:39 pm-9:40 am

1 stop14h 01m

London Heathrow

Wed 3/12

6:30 am-2:55 pm

1 stop13h 25m

$720

St. LouisEdinburgh

STL - EDI

STLEDI

Lambert-St Louis

Wed 3/19

11:39 am-9:50 am

2 stops17h 11m

Edinburgh Turnhouse

Wed 3/26

10:05 am-10:18 pm

2 stops17h 13m

$724

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 3/13

3:50 pm-11:50 am

1 stop15h 00m

London Heathrow

Mon 3/24

11:10 am-3:06 pm

1 stop32h 56m

$741

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 60 results
1
2
3
...
6

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.

Travel insights for flights from St. Louis to United Kingdom

Get recent, data-driven insights about flights from St. Louis to United Kingdom including ideal travel times, pricing trends, and more.

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 $1,138). 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 January 30, 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 January 30, 2025.
See what other customers who have flown with Delta, KLM and Finnair 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
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
8,454 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
1,335 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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.

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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.

Austrian Airlines
7.5
Good
786 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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
7.5
Good
657 reviews
Delta
8.0
Very good
8,454 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

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?

    $372 is the cheapest one-way deal found within the past few days, from Scandinavian Airlines. You may also be able to find cheap deals on Air Canada and British Airways, with prices starting from $469 and $481, 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 $1,138). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Heathrow flights
St. Louis to Dublin flights
Kansas City to Heathrow flights
Kansas City to Dublin flights
St. Louis to Frankfurt flights
Kansas City to Athens flights
St. Louis to Barcelona-El Prat flights
Kansas City to Charles de Gaulle flights
St. Louis to Leonardo da Vinci/Fiumicino flights
St. Louis to Gatwick flights
St. Louis to Charles de Gaulle flights
Kansas City to Leonardo da Vinci/Fiumicino flights
Kansas City to Gatwick flights
St. Louis to Madrid flights
Kansas City to Vicenza flights
St. Louis to London City flights
St. Louis to Orly flights
St. Louis to Istanbul flights
Kansas City to Barcelona-El Prat flights
St. Louis to Athens flights
St. Louis to Lisbon flights
Kansas City to Frankfurt flights
St. Louis to Sarajevo flights
Kansas City to Madrid flights
Kansas City to London City flights
Kansas City to Orly flights
St. Louis to Amsterdam flights
St. Louis to Malpensa flights
Kansas City to Lisbon flights
Kansas City to Malpensa flights
Kansas City to Istanbul flights
Kansas City to Keflavik Intl flights
Kansas City to Zurich flights
St. Louis to Frederic Chopin flights
St. Louis to Linate flights
Kansas City to Bruxelles-National flights
St. Louis to Zurich flights
Kansas City to Edinburgh flights
St. Louis to Zagreb flights
Kansas City to Amsterdam flights
Springfield to Dublin flights
Kansas City to Munich flights
St. Louis to Edinburgh flights
St. Louis to Sabiha Gokcen flights
Kansas City to Berlin flights
Kansas City to Linate flights
St. Louis to Vicenza flights
Kansas City to Copenhagen flights
Kansas City to Oslo Gardermoen flights
St. Louis to Oslo Gardermoen flights

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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$1,001FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$611Average$865FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$624Average$975FlexibilityNo cancel feeOn-time67%
IberiaCheapest$631Average$821FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$631Average$957FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$647Average$931FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$649Average$1,382FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$654Average$896FlexibilityNo cancel feeOn-time72%
DeltaCheapest$686Average$954FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$887Average$1,051FlexibilityNo cancel feeOn-timeN/A
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.