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St. Louis

$493+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — STL
Dec 7 — Dec 141
Sat 12/7
Sat 12/14
1 adult, Economy
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The best prices from London Heathrow to Lambert-St Louis are usually found in February or April, booked 15 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

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 December 2, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

August

Cheapest in

February

Round-trip from

$757
(ChecknFly)

One-way from

$493
(Mytrip)
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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High demand for flights, 27% potential price rise
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Best time to find cheap flights, 17% potential price drop
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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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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 December 2, 2024.

This ChecknFly deal was found by Cheapflights users on 12/1. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3112:35 pmLHR - STL
1 stop16h 13mIberia
Tue 1/76:29 pmSTL - LHR
1 stop30h 31mIberia
Deal found 12/1$813
This The Travel House deal was found by Cheapflights users on 12/1. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3011:45 amLHR - STL
1 stop18h 06mFinnair
Mon 1/65:58 pmSTL - LHR
1 stop31h 02mFinnair
Deal found 12/1$907
This CrystalTravel deal was found by Cheapflights users on 12/1. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:50 amLHR - STL
1 stop15h 53mVirgin Atlantic
Tue 1/75:00 pmSTL - LHR
2 stops31h 25mVirgin Atlantic
Deal found 12/1$1,054
This United Airlines deal was found by Cheapflights users on 12/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:40 amLHR - STL
2 stops18h 17mUnited Airlines
Tue 1/71:02 pmSTL - LHR
2 stops15h 13mUnited Airlines
Deal found 12/1$1,096
This ChecknFly deal was found by Cheapflights users on 12/2. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/145:00 pmLHR - STL
2 stops36h 43mScandinavian Airlines
Wed 1/222:00 pmSTL - LHR
2 stops22h 30mScandinavian Airlines
Deal found 12/2$1,115
This Air Canada deal was found by Cheapflights users on 12/1. 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 12/303:00 pmLHR - STL
2 stops30h 06mAir Canada
Mon 1/63:50 pmSTL - LHR
2 stops33h 20mAir Canada
Deal found 12/1$1,121
This The Travel House deal was found by Cheapflights users on 12/1. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:00 pmLHR - STL
2 stops24h 26mLufthansa
Mon 1/65:30 pmSTL - LHR
1 stop32h 25mLufthansa
Deal found 12/1$1,124
This KLM deal was found by Cheapflights users on 12/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/319:10 amLHR - STL
1 stop18h 56mKLM
Tue 1/710:22 amSTL - LHR
1 stop14h 43mKLM
Deal found 12/1$1,128
This Mytrip deal was found by Cheapflights users on 11/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1112:15 pmLHR - STL
3 stops29h 30mMultiple Airlines
Wed 1/1512:15 pmSTL - LHR
3 stops25h 15mMultiple Airlines
Deal found 11/30$1,165
This British Airways deal was found by Cheapflights users on 12/1. 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.
Sun 12/152:10 pmLHR - STL
1 stop14h 03mBritish Airways
Sun 12/222:00 pmSTL - LHR
1 stop13h 20mBritish Airways
Deal found 12/1$1,279
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/98:40 amLHR - STL
2 stops18h 14mDelta
Mon 12/1610:28 amSTL - LHR
1 stop13h 52mDelta
Deal found 12/2$1,344
This Turkish Airlines deal was found by Cheapflights users on 12/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/87:55 pmLHR - STL
2 stops25h 39mTurkish Airlines
Thu 12/125:40 pmSTL - LHR
2 stops21h 25mTurkish Airlines
Deal found 12/2$2,111

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 2,650,959 searches. Data last updated December 2, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/8

12:35 pm-4:08 pm

1 stop33h 33m

Lambert-St Louis

Wed 5/14

6:23 pm-10:20 am

1 stop9h 57m

$757

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/29

6:10 pm-10:28 pm

2 stops34h 18m

Lambert-St Louis

Fri 2/28

11:25 am-8:15 am

1 stop14h 50m

$763

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

12:15 pm-11:45 am

3 stops29h 30m

Lambert-St Louis

Mon 1/20

9:20 am-10:50 am

3 stops19h 30m

$784

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

6:00 pm-3:06 pm

1 stop27h 06m

Lambert-St Louis

Sun 1/19

4:36 pm-8:35 pm

2 stops21h 59m

$934

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

3:00 pm-3:38 pm

2 stops30h 38m

Lambert-St Louis

Sun 1/26

4:36 pm-7:30 am

1 stop32h 54m

$969

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 1/16

3:00 pm-3:06 pm

2 stops30h 06m

Lambert-St Louis

Thu 1/23

3:50 pm-11:50 am

1 stop14h 00m

$970

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 1/29

6:40 am-11:37 pm

2 stops22h 57m

Lambert-St Louis

Fri 2/28

12:52 pm-4:00 pm

2 stops21h 08m

$976

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/13

10:00 am-11:30 pm

1 stop19h 30m

Lambert-St Louis

Sun 1/26

11:28 am-8:35 pm

1 stop27h 07m

$981

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 2/3

6:30 am-4:37 pm

2 stops16h 07m

Lambert-St Louis

Mon 5/5

7:20 am-1:15 pm

1 stop23h 55m

$982

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 1/6

8:05 pm-6:45 pm

2 stops28h 40m

Lambert-St Louis

Tue 6/3

7:10 pm-6:55 am

2 stops29h 45m

$1,068

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 19 results
1
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 December.
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*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CombigoPrice 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 November 22, 2024.

The best time to book flights from London Heathrow Airport to St. Louis is 15 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of $308). 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 December 2, 2024.

It’s optimal to fly from London Heathrow Airport to St. Louis in the afternoon. By choosing this option you can save up to 25% 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 December 2, 2024.
Peruse reviews from past customers who have flown with Iberia, Lufthansa and Air Canada 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
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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
8,698 reviews
Delta
8.0
Very good
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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
1,343 reviews
Delta
8.0
Very good
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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
1,297 reviews
Delta
8.0
Very good
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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
7.6
Good
664 reviews
Delta
8.0
Very good
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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
800 reviews
Delta
8.0
Very good
8,698 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

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 $757. Other airlines that can offer you cheap pricing are Finnair, from $763, and Lufthansa, from $934. You may be able to fly from London Heathrow Airport to St. Louis for 12% 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 $516 on WestJet. Other airlines that offer cheap prices include British Airways from $862 and Iberia from $866 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to St. Louis (average of $308). 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 St. Louis 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 2,650,959 searches. Data last updated December 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$1,357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$583Average$1,000FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$961Average$1,259FlexibilityNo cancel feeOn-time70%
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