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St. Louis

$464+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Jan 8 — Jan 151
Wed 1/8
Wed 1/15
1 adult, Economy
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The best prices from London Heathrow to Lambert-St Louis are usually found in April or February, booked 56 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 January 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$750
(The Travel House)

One-way from

$464
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$820
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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High demand for flights, 11% 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 January 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 January 3, 2025.

This The Travel House deal was found by Cheapflights users on 1/2. 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.
Sat 3/1510:00 amLHR - STL
1 stop18h 09mFinnair
Sat 3/225:37 pmSTL - LHR
1 stop13h 28mFinnair
Deal found 1/2$750
This Trip.com deal was found by Cheapflights users on 1/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/151:00 pmLHR - STL
1 stop15h 49mMultiple Airlines
Sat 3/225:24 pmSTL - LHR
2 stops55h 56mMultiple Airlines
Deal found 1/2$907
This Lufthansa deal was found by Cheapflights users on 1/2. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/226:30 amLHR - STL
1 stop13h 25mLufthansa
Thu 2/201:03 pmSTL - LHR
1 stop12h 52mLufthansa
Deal found 1/2$909
This United Airlines deal was found by Cheapflights users on 1/2. 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 1/226:30 amLHR - STL
1 stop13h 25mUnited Airlines
Thu 2/2010:18 amSTL - LHR
2 stops13h 37mUnited Airlines
Deal found 1/2$914
This lastminute.com deal was found by Cheapflights users on 1/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/205:35 pmLHR - STL
2 stops31h 10mVirgin Atlantic
Mon 2/32:00 pmSTL - LHR
1 stop10h 20mVirgin Atlantic
Deal found 1/2$936
This Delta deal was found by Cheapflights users on 1/1. 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.
Mon 1/138:40 amLHR - STL
2 stops19h 09mDelta
Mon 1/2711:04 amSTL - LHR
2 stops14h 51mDelta
Deal found 1/1$944
This British Airways deal was found by Cheapflights users on 1/1. 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.
Sat 7/59:15 amLHR - STL
1 stop12h 43mBritish Airways
Wed 7/166:15 pmSTL - LHR
1 stop10h 15mBritish Airways
Deal found 1/1$1,123
This Air Canada deal was found by Cheapflights users on 1/1. 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 7/79:30 amLHR - STL
1 stop16h 30mAir Canada
Wed 7/161:30 pmSTL - LHR
1 stop11h 00mAir Canada
Deal found 1/1$1,130
This Scandinavian Airlines deal was found by Cheapflights users on 1/2. 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.
Thu 4/106:40 amLHR - STL
2 stops22h 51mScandinavian Airlines
Thu 4/174:00 pmSTL - LHR
2 stops19h 40mScandinavian Airlines
Deal found 1/2$1,230
This Voliamo deal was found by Cheapflights users on 1/2. 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 Voliamo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/137:45 pmLHR - STL
2 stops32h 24mAer Lingus
Fri 1/176:00 pmSTL - LHR
2 stops19h 50mAer Lingus
Deal found 1/2$1,459
This American Airlines deal was found by Cheapflights users on 1/2. 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 1/1211:50 amLHR - STL
1 stop17h 56mAmerican Airlines
Sun 5/114:34 pmSTL - LHR
1 stop34h 51mAmerican Airlines
Deal found 1/2$1,651
This Austrian Airlines deal was found by Cheapflights users on 1/2. 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 1/46:00 amLHR - STL
2 stops17h 51mAustrian Airlines
Sat 1/1112:41 pmSTL - LHR
2 stops35h 59mAustrian Airlines
Deal found 1/2$1,740

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 January 3, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 3/15

10:00 am-11:09 pm

1 stop18h 09m

Lambert-St Louis

Sat 3/22

5:37 pm-12:05 pm

1 stop13h 28m

$750

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 3/15

1:00 pm-11:49 pm

1 stop15h 49m

Lambert-St Louis

Sat 3/22

5:24 pm-6:20 am

2 stops55h 56m

$907

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

1:03 pm-7:55 am

1 stop12h 52m

$909

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

10:18 am-5:55 am

2 stops13h 37m

$914

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/20

5:35 pm-6:45 pm

2 stops31h 10m

Lambert-St Louis

Mon 2/3

2:00 pm-6:20 am

1 stop10h 20m

$936

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

8:40 am-9:49 pm

2 stops19h 09m

Lambert-St Louis

Mon 1/27

11:04 am-7:55 am

2 stops14h 51m

$944

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 4/10

6:40 am-11:31 pm

2 stops22h 51m

Lambert-St Louis

Thu 4/17

4:00 pm-5:40 pm

2 stops19h 40m

$1,230

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

7:45 pm-10:09 pm

2 stops32h 24m

Lambert-St Louis

Fri 1/17

6:00 pm-7:50 pm

2 stops19h 50m

$1,459

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

8:20 am-4:23 pm

1 stop14h 03m

Lambert-St Louis

Mon 5/5

6:23 pm-10:55 am

1 stop10h 32m

$1,614

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 1/12

11:50 am-11:46 pm

1 stop17h 56m

Lambert-St Louis

Sun 5/11

4:34 pm-9:25 am

1 stop34h 51m

$1,651

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/1

Showing 1-10 of 19 results
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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 January.
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*3 stars
MytripPrice Accuracy3 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 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 December 27, 2024.

The best time to book flights from London Heathrow Airport to St. Louis is 56 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 January 3, 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 January 3, 2025.
Peruse reviews from past customers who have flown with Delta, Scandinavian Airlines and British Airways from London to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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
8,536 reviews
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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
1,338 reviews
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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
1,282 reviews
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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
785 reviews
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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
664 reviews
Delta
8.0
Very good
8,536 reviews

Comfort

8.0

Entertainment

7.9

Boarding

8.2

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 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 3 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 $750. Other airlines that can offer you cheap pricing are Lufthansa, from $909, and United Airlines, from $914. You may be able to fly from London Heathrow Airport to St. Louis for 15% 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 $507 on WestJet. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $811 and Iberia from $863 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

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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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Gatwick to Kansas City flights
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Stansted to Kansas City flights

Top 3 airlines flying from Heathrow to St. Louis

Discover the top 3 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 January 3, 2025.
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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