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$285+ Cheap flights from St. Louis (STL) to London (LON)

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LON
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Lambert-St Louis to London are usually found in February or April, booked 2 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to London

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to London (LON). 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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

February

Round-trip from

$733
(Kiwi.com)

One-way from

$285
(Kiwi.com)
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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High demand for flights, 35% potential price rise
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Best time to find cheap flights, 22% potential price drop
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From Lambert-St Louis to London (LON)
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One-way flight from Lambert-St Louis to London (LON)
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Find flight deals from St. Louis to London

Cheapest flights from St. Louis to London
Explore the most affordable flight options available from St. Louis to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Gurufare deal was found by Cheapflights users on 11/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/241:09 pmSTL - LHR
2 stops22h 31mScandinavian Airlines
Sat 12/76:40 amLHR - STL
2 stops22h 40mScandinavian Airlines
Deal found 11/19$740
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/46:46 pmSTL - LGW
2 stops33h 49mMultiple Airlines
Thu 12/122:00 pmLGW - STL
1 stop15h 24mMultiple Airlines
Deal found 11/20$788
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Wed 12/43:45 pmSTL - LHR
2 stops23h 20mMultiple Airlines
Sat 12/77:35 pmLHR - STL
2 stops24h 20mMultiple Airlines
Deal found 11/19$809
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Sat 12/143:50 pmSTL - LHR
1 stop32h 40mAir Canada
Fri 12/273:00 pmLHR - STL
2 stops30h 06mAir Canada
Deal found 11/19$829
This Delta deal was found by Cheapflights users on 11/19. 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 12/1010:28 amSTL - LHR
1 stop13h 52mDelta
Fri 12/279:10 amLHR - STL
1 stop14h 14mDelta
Deal found 11/19$876
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Wed 12/43:45 pmSTL - LTN
2 stops18h 40mMultiple Airlines
Sat 12/76:25 amLTN - STL
3 stops38h 56mMultiple Airlines
Deal found 11/19$881
This British Airways deal was found by Cheapflights users on 11/19. 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.
Fri 12/131:36 pmSTL - LHR
1 stop11h 44mBritish Airways
Fri 12/272:10 pmLHR - STL
1 stop14h 09mBritish Airways
Deal found 11/19$892
This United Airlines deal was found by Cheapflights users on 11/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/101:05 pmSTL - LHR
1 stop12h 50mUnited Airlines
Thu 5/89:30 amLHR - STL
2 stops32h 50mUnited Airlines
Deal found 11/18$905
This Iberia deal was found by Cheapflights users on 11/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:51 amSTL - LHR
1 stop12h 29mIberia
Fri 12/272:10 pmLHR - STL
1 stop14h 09mIberia
Deal found 11/19$926
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/35:45 amSTL - LGW
2 stops19h 45mAmerican Airlines
Fri 12/1311:20 amLGW - STL
2 stops27h 34mAmerican Airlines
Deal found 11/19$958
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/103:50 pmSTL - LCY
2 stops15h 00mMultiple Airlines
Thu 5/87:05 pmLCY - STL
2 stops30h 56mMultiple Airlines
Deal found 11/18$959
This KLM deal was found by Cheapflights users on 11/19. 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.
Fri 12/611:25 amSTL - LHR
1 stop13h 25mKLM
Wed 12/182:30 pmLHR - STL
1 stop15h 13mKLM
Deal found 11/19$970

Find flights from St. Louis to London within your budget

Customize your flight search to find flights from St. Louis to London 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLondon

STL - LGW

STLLGW

Lambert-St Louis

Sun 2/16

5:20 pm-10:00 am

1 stop34h 40m

London Gatwick

Sun 2/23

12:00 pm-10:08 pm

1 stop16h 08m

$733

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sat 2/15

12:52 pm-4:00 pm

2 stops21h 08m

London Heathrow

Mon 2/24

6:40 am-11:38 pm

2 stops22h 58m

$738

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sat 1/11

3:50 pm-7:10 am

2 stops33h 20m

London Heathrow

Fri 1/24

6:30 am-1:55 pm

1 stop13h 25m

$757

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 2/25

5:36 pm-11:15 am

1 stop11h 39m

London Heathrow

Fri 3/14

6:30 am-2:55 pm

1 stop13h 25m

$779

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sat 4/19

3:50 pm-6:30 am

2 stops32h 40m

London Heathrow

Tue 4/29

8:30 am-3:06 pm

1 stop12h 36m

$803

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 1/7

2:00 pm-7:55 am

1 stop11h 55m

London Heathrow

Tue 1/14

2:30 pm-11:37 pm

1 stop15h 07m

$805

St. LouisLondon

STL - LCY

STLLCY

Lambert-St Louis

Tue 1/28

3:50 pm-12:50 pm

2 stops15h 00m

London City

Tue 2/4

9:15 am-3:06 pm

2 stops35h 51m

$832

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Fri 3/14

7:20 am-6:20 am

1 stop18h 00m

London Heathrow

Fri 3/21

6:30 am-4:51 pm

2 stops15h 21m

$840

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 2/19

3:45 pm-10:45 am

1 stop13h 00m

London Heathrow

Mon 2/24

7:15 pm-1:55 pm

2 stops48h 40m

$842

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 4/17

6:25 pm-10:20 am

1 stop9h 55m

London Heathrow

Thu 4/24

10:30 am-6:20 pm

1 stop13h 50m

$850

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 42 results
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Compare providers for flights from St. Louis to London

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 St. Louis to London in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust 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 St. Louis-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-London 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 St. Louis-London 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 St. Louis to London

Have a flexible travel schedule? Discover the best time to fly to London 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 London

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to London. Price data was last updated on November 15, 2024.

The best time to book flights from St. Louis to London is 2 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to London (average of $648). Flying from St. Louis to London in June is currently the most expensive (average of $1,089). 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 LON?

Find hourly flight availability from St. Louis to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

It’s optimal to fly from St. Louis to London in the afternoon. By choosing this option you can save up to 5% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to London. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their St. Louis to London flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in London by month

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

In terms of precipitation, rainfall in London 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 London when rainfall is around 1.6 in.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated November 20, 2024.
Read reviews from past customers who have flown United Airlines, British Airways and Iberia from St. Louis to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

Delta
8.0
Very good
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
805 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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 London. 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 London?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to London. You should not have trouble finding flights to London from Lambert-St Louis; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 10 airlines have flights from the St. Louis airport to London. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    According to our current data, Scandinavian Airlines ($738), United Airlines ($779), and Air Canada ($803) offers the cheapest pricing from St. Louis to London. These flights start at 19% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as $374. However, be on the lookout for offers from Air Canada and KLM, as they are both options that can get you from St. Louis to London for a low price.

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

    The most popular flight routes from St. Louis to London are Lambert-St Louis - London Heathrow, Lambert-St Louis - London Gatwick and Lambert-St Louis - London City.

  • Where are the most common layover locations when flying from St. Louis to London?

    Flights departing from St. Louis and landing in London layover in Chicago most frequently.

  • What are some popular things to do or see while on a layover in Chicago?

    Chicago travelers tend to visit Magnificent Mile, Grant Park, and River North more than anywhere else. Magnificent Mile, Grant Park, and River North are located about 15.5 mi, 16.2 mi, and 15.0 mi, respectively from Chicago O'Hare Intl. Travelers can rent a car at Chicago O'Hare Intl for an average daily rate of $57 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for St. Louis to London flights?

    Flights departing from St. Louis and landing in London layover in Detroit least frequently.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from St. Louis to London (average of $648). Flying from St. Louis to London in June is currently the most expensive (average of $1,089). 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 London

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 London

Discover the top 10 airlines that operate flights from St. Louis to London. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$617Average$765FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$635Average$968FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$653Average$931FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$654Average$814FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$663Average$854FlexibilityNo cancel feeOn-time69%
DeltaCheapest$664Average$895FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$707Average$1,021FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$716Average$1,025FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$769Average$841FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$802Average$1,259FlexibilityNo cancel feeOn-time76%
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