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St. Louis

$356+ Cheap flights from Heathrow (LHR) 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Feb 11 — Feb 181
Tue 2/11
Tue 2/18
1 adult, Economy
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The best prices from London Heathrow to Lambert-St Louis are usually found in March or February, booked 26 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Heathrow to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$710
(The Travel House)

One-way from

$356
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$783
Provider with most accurate pricing for London Heathrow-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Lambert-St Louis flights.
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From London Heathrow to Lambert-St Louis
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One-way flight from London Heathrow to Lambert-St Louis
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Highest demand for flights based on searches. 10% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Heathrow to St. Louis

Cheapest flights from Heathrow to St. Louis
Explore the most affordable flight options available from Heathrow to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2025.

This The Travel House deal was found by Cheapflights users on 2/5. 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.
Mon 4/146:05 pmLHR - STL
2 stops24h 44mFinnair
Mon 4/283:47 pmSTL - LHR
1 stop12h 43mFinnair
Deal found 2/5$710
This Netflights deal was found by Cheapflights users on 2/5. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1010:15 amLHR - STL
1 stop15h 26mBritish Airways
Mon 3/3111:39 amSTL - LHR
1 stop12h 46mBritish Airways
Deal found 2/5$833
This SmartFares deal was found by Cheapflights users on 2/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/205:00 pmLHR - STL
2 stops36h 37mScandinavian Airlines
Wed 3/510:26 amSTL - LHR
2 stops23h 34mScandinavian Airlines
Deal found 2/5$852
This Scandinavian Airlines deal was found by Cheapflights users on 2/5. 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 5/286:40 amLHR - STL
2 stops19h 03mMultiple Airlines
Thu 6/127:30 amSTL - LHR
2 stops26h 30mMultiple Airlines
Deal found 2/5$858
This TravelJunction deal was found by Cheapflights users on 2/5. 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 TravelJunction is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/101:50 pmLHR - STL
1 stop13h 28mIberia
Mon 3/312:05 pmSTL - LHR
1 stop12h 00mIberia
Deal found 2/5$861
This CrystalTravel deal was found by Cheapflights users on 2/5. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/256:20 amLHR - STL
2 stops21h 29mVirgin Atlantic
Wed 3/121:06 pmSTL - LHR
1 stop12h 14mVirgin Atlantic
Deal found 2/5$914
This TravelUp deal was found by Cheapflights users on 2/5. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/109:30 amLHR - STL
2 stops19h 02mLufthansa
Mon 3/315:35 pmSTL - LHR
1 stop12h 10mLufthansa
Deal found 2/5$915
This United Airlines deal was found by Cheapflights users on 2/6. 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 5/59:30 amLHR - STL
1 stop16h 31mUnited Airlines
Mon 5/121:30 pmSTL - LHR
1 stop14h 30mUnited Airlines
Deal found 2/6$942
This Delta deal was found by Cheapflights users on 2/5. 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 3/46:30 amLHR - STL
2 stops16h 07mDelta
Tue 3/1110:30 amSTL - LHR
2 stops15h 45mDelta
Deal found 2/5$958
This Austrian Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 3/228:00 amLHR - STL
1 stop20h 32mAustrian Airlines
Sat 3/2911:35 amSTL - LHR
1 stop13h 40mAustrian Airlines
Deal found 2/5$959
This Air Canada deal was found by Cheapflights users on 2/5. 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.
Sun 3/2311:10 amLHR - STL
1 stop32h 56mAir Canada
Sun 3/303:50 pmSTL - LHR
2 stops36h 10mAir Canada
Deal found 2/5$969
This Cheapflightsfares deal was found by Cheapflights users on 2/5. 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 4/111:25 pmLHR - STL
2 stops15h 59mAer Lingus
Fri 4/2510:15 amSTL - LHR
2 stops20h 25mAer Lingus
Deal found 2/5$1,349

Find flights from Heathrow to St. Louis within your budget

Customize your flight search to find flights from Heathrow 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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 4/14

6:05 pm-12:49 pm

2 stops24h 44m

Lambert-St Louis

Mon 4/28

3:47 pm-10:30 am

1 stop12h 43m

$710

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 3/10

10:15 am-8:41 pm

1 stop15h 26m

Lambert-St Louis

Mon 3/31

11:39 am-6:25 am

1 stop12h 46m

$833

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 2/20

5:00 pm-11:37 pm

2 stops36h 37m

Lambert-St Louis

Wed 3/5

10:26 am-4:00 pm

2 stops23h 34m

$852

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 3/10

1:50 pm-10:18 pm

1 stop13h 28m

Lambert-St Louis

Mon 3/31

2:05 pm-8:05 am

1 stop12h 00m

$861

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 5/5

10:30 am-8:01 pm

2 stops15h 31m

Lambert-St Louis

Mon 5/12

1:30 pm-10:00 am

1 stop14h 30m

$913

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 2/25

6:20 am-9:49 pm

2 stops21h 29m

Lambert-St Louis

Wed 3/12

1:06 pm-6:20 am

1 stop12h 14m

$914

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 3/10

9:30 am-11:32 pm

2 stops19h 02m

Lambert-St Louis

Mon 3/31

5:35 pm-11:45 am

1 stop12h 10m

$915

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 5/5

9:30 am-8:01 pm

1 stop16h 31m

Lambert-St Louis

Mon 5/12

1:30 pm-10:00 am

1 stop14h 30m

$942

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 3/4

11:45 am-11:36 pm

2 stops17h 51m

Lambert-St Louis

Tue 3/11

1:06 pm-10:35 am

1 stop16h 29m

$958

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 3/22

8:00 am-11:32 pm

1 stop20h 32m

Lambert-St Louis

Sat 3/29

11:35 am-6:15 am

1 stop13h 40m

$959

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 18 results
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2

Compare providers for flights from Heathrow 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 Heathrow to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 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 Heathrow Airport-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 Heathrow Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-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 Heathrow Airport-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 Heathrow to St. Louis

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to St. Louis. Price data was last updated on January 31, 2025.

The best time to book flights from London Heathrow Airport to St. Louis is 26 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 London Heathrow Airport to St. Louis?

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of $311). Flying from London Heathrow Airport 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 LHR to STL?

Find hourly flight availability from Heathrow 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 February 6, 2025.

It’s optimal to fly from London Heathrow Airport to St. Louis at noon. By choosing this option you can save up to 15% on the cost of your flight, compared to 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 February 6, 2025.
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,388 reviews
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Finnair
7.6
Good
1,284 reviews
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Austrian Airlines
7.5
Good
785 reviews
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Virgin Atlantic
7.5
Good
659 reviews
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

United Airlines
7.4
Good
8,879 reviews
Delta
8.0
Very good
8,388 reviews

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 Heathrow 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 Heathrow?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from London Heathrow to St. Louis. You should not have trouble finding flights to Lambert-St Louis from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the St. Louis airport from London Heathrow. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    Cheapflights users have booked flights from London Heathrow Airport to St. Louis round-trip from $710. Other airlines that can offer you cheap pricing are British Airways, from $833, and Scandinavian Airlines, from $852. You may be able to fly from London Heathrow Airport to St. Louis for 20% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $517 on WestJet. Other airlines that offer cheap prices include Lufthansa from $809 and British Airways from $860 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of $311). Flying from London Heathrow Airport 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Heathrow to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Stansted to Kansas City flights

Top 4 airlines flying from Heathrow to St. Louis

Discover the top 4 airlines that operate flights from Heathrow 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 February 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$1,357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$867Average$1,142FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$925Average$928FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$961Average$1,259FlexibilityNo cancel feeOn-time70%
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