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St. Louis

$393+ Cheap flights from London (LON) to St. Louis (STL)

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — STL
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from London to Lambert-St Louis are usually found in January or February, booked 80 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from London to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to St. Louis (STL). 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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$746
(ChecknFly)

One-way from

$393
(Trip.com)

Popular in

August

Cheapest in

January

Average price

$1,182
Provider with most accurate pricing for London (LON)-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Lambert-St Louis flights.
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From London (LON) to Lambert-St Louis
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One-way flight from London (LON) to Lambert-St Louis
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High demand for flights, 15% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from London to St. Louis

Cheapest flights from London to St. Louis
Explore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This ChecknFly deal was found by Cheapflights users on 12/17. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2611:50 amLHR - STL
1 stop13h 10mIberia
Tue 12/316:30 amSTL - LHR
1 stop23h 30mIberia
Deal found 12/17$1,093
This ChecknFly deal was found by Cheapflights users on 12/17. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2612:05 pmLHR - STL
1 stop14h 18mLufthansa
Tue 12/3111:30 amSTL - LHR
2 stops13h 25mLufthansa
Deal found 12/17$1,367
This Air Canada deal was found by Cheapflights users on 12/17. 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 12/307:40 amLHR - STL
2 stops37h 26mMultiple Airlines
Mon 1/63:50 pmSTL - LHR
2 stops33h 20mMultiple Airlines
Deal found 12/17$1,405
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/3011:35 amLHR - STL
1 stop16h 41mUnited Airlines
Mon 1/65:59 pmSTL - LHR
1 stop31h 31mUnited Airlines
Deal found 12/17$1,414
This The Travel House deal was found by Cheapflights users on 12/17. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1812:35 pmLHR - STL
1 stop16h 35mFinnair
Wed 12/2510:16 amSTL - LHR
1 stop19h 24mFinnair
Deal found 12/17$1,515
This Austrian Airlines deal was found by Cheapflights users on 12/18. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/267:25 pmLHR - STL
2 stops28h 26mAustrian Airlines
Tue 12/317:00 amSTL - LHR
1 stop20h 10mAustrian Airlines
Deal found 12/18$1,518
This Delta deal was found by Cheapflights users on 12/17. 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 12/1710:00 amLHR - STL
2 stops16h 54mDelta
Tue 1/710:22 amSTL - LHR
2 stops14h 28mDelta
Deal found 12/17$1,614
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Tue 12/178:00 amLGW - STL
3 stops33h 30mMultiple Airlines
Tue 12/313:50 pmSTL - LGW
1 stop11h 55mMultiple Airlines
Deal found 12/16$1,636
This The Travel House deal was found by Cheapflights users on 12/17. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1811:45 amLHR - STL
2 stops15h 09mKLM
Wed 12/257:15 amSTL - LHR
1 stop22h 25mKLM
Deal found 12/17$1,800
This Virgin Atlantic deal was found by Cheapflights users on 12/18. 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.
Thu 12/198:50 amLHR - STL
2 stops18h 52mVirgin Atlantic
Thu 12/267:07 pmSTL - LHR
1 stop10h 33mVirgin Atlantic
Deal found 12/18$1,893
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/2212:30 pmLGW - STL
2 stops26h 20mAmerican Airlines
Sun 12/297:30 amSTL - LGW
2 stops18h 00mAmerican Airlines
Deal found 12/17$1,978
This StudentUniverse deal was found by Cheapflights users on 12/17. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/228:05 pmLCY - STL
2 stops27h 19mKLM
Sun 12/2910:13 amSTL - LCY
2 stops15h 02mKLM
Deal found 12/17$2,094

Find flights from London to St. Louis within your budget

Customize your flight search to find flights from London to St. Louis 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 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/15

12:35 pm-10:28 pm

1 stop15h 53m

Lambert-St Louis

Wed 1/22

2:15 pm-7:00 am

1 stop10h 45m

$746

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Sat 2/1

2:00 pm-2:43 pm

2 stops30h 43m

Lambert-St Louis

Sun 2/9

12:15 pm-10:55 am

3 stops16h 40m

$755

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 1/23

1:00 pm-9:16 am

2 stops26h 16m

Lambert-St Louis

Sun 1/26

8:22 am-6:50 am

1 stop16h 28m

$845

LondonSt. Louis

LCY - STL

LCYSTL

London City

Thu 1/23

9:25 am-11:45 am

3 stops32h 20m

Lambert-St Louis

Sun 1/26

12:15 pm-6:40 pm

3 stops24h 25m

$922

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/15

6:40 am-11:37 pm

2 stops22h 57m

Lambert-St Louis

Wed 1/22

2:00 pm-4:00 pm

2 stops20h 00m

$923

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 1/14

2:30 pm-3:06 pm

1 stop30h 36m

Lambert-St Louis

Tue 1/21

11:30 am-6:55 am

2 stops13h 25m

$983

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/22

6:30 am-1:55 pm

1 stop13h 25m

Lambert-St Louis

Thu 2/20

3:32 pm-11:05 am

2 stops13h 33m

$1,009

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 1/23

12:30 pm-11:46 pm

2 stops17h 16m

Lambert-St Louis

Sun 1/26

9:43 am-7:30 am

2 stops15h 47m

$1,024

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

7:25 pm-11:30 pm

2 stops34h 05m

Lambert-St Louis

Mon 1/20

11:28 am-6:20 am

1 stop12h 52m

$1,030

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 3/18

9:50 am-11:57 pm

1 stop19h 07m

Lambert-St Louis

Wed 4/16

6:25 pm-10:20 am

1 stop9h 55m

$1,038

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 37 results
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Compare providers for flights from London to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to St. Louis in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CombigoPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from London 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 London to St. Louis

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

How far ahead should I book a flight from London to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from London to St. Louis. Price data was last updated on December 13, 2024.

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to St. Louis?

Currently, August is the cheapest month in which you can book a flight from London to St. Louis (average of $311). Flying from London to St. Louis in March is currently the most expensive (average of $356). 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 LON to STL?

Find hourly flight availability from London to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

A simple way to save on the total cost of your ticket is to fly from London to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 18, 2024.
See what other customers who have flown with Virgin Atlantic, British Airways and Aer Lingus from London to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
787 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
668 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from London to St. Louis. 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 into for flights to St. Louis from London?

    If you book a flight to St. Louis from London, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from London to Lambert-St Louis per day from 3 different airlines.

  • What are the cheapest airlines flying from London to St. Louis round-trip?

    Our cheapest airline available from London to St. Louis is Iberia. Our recent data shows that you can find tickets from as low as $746 on this airline. Additional options worth looking into are Scandinavian Airlines and Lufthansa, starting at $923 and $983 round-trip. Iberia is currently priced 16% below the average price you’ll pay for this route.

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

    $504 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Iberia and Aer Lingus, with prices starting from $865 and $1,027, respectively.

  • What are the most popular routes from London to St. Louis?

    While some choose either London City - Lambert-St Louis or London Gatwick - Lambert-St Louis, London Heathrow - Lambert-St Louis is the most popular route from London to St. Louis.

  • Can I find deals for flights from London to St. Louis that include hotel bookings?

    Yes. In addition to deals on London to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to St. Louis.

  • Can I find deals for business class flights from London to St. Louis?

    Yes. Cheapflights offers flight deals from London to St. Louis 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 London to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from London to St. Louis (average of $311). Flying from London to St. Louis in March is currently the most expensive (average of $356). 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 3 airlines flying from London to St. Louis

Discover the top 3 airlines that operate flights from London to St. Louis. 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 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$1,357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$867Average$1,108FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$961Average$1,259FlexibilityNo cancel feeOn-time70%
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