Which airport typically offers the quickest layover for flights from St. Louis to London Heathrow Airport?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 31m.

What’s the fastest layover option from St. Louis to London Heathrow Airport?

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 10h 06m.

What’s the cheapest layover airport for flights from St. Louis to London Heathrow Airport?

Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $797.

What’s the top layover airport for flights from St. Louis to London Heathrow Airport?

Chicago (ORD) – chosen by Cheapflights users on 57% of 1-stop itineraries from St. Louis to London Heathrow Airport on Cheapflights.

How long is the flight from St. Louis to London Heathrow Airport?

United Airlines can get you from St. Louis to London Heathrow Airport in just under 11h 51m. Your travel time can differ by up to . Airlines will cover a distance of 4186 mi.

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

According to our current data, KLM ($529), Air Canada ($573), and Delta ($580) offers the cheapest pricing from St. Louis to London Heathrow Airport. KLM is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

If weather is an important factor for your trip to London Heathrow Airport, 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).

What are the cheapest flights from St. Louis to London Heathrow Airport?

While on average a flight from St. Louis to London Heathrow Airport is generally $634, our data shows the cheapest flight currently is $403. When looking at the most popular route, (Lambert-St Louis - London Heathrow), you can expect to pay $598 for that flight.

What are the most popular airlines that fly from St. Louis to London Heathrow Airport?

The most popular airlines flying from St. Louis to London Heathrow Airport are British Airways, American Airlines and United Airlines. Something to consider prior to booking your flight.

Most accurate provider : When it comes to deals on St. Louis-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from St. Louis to London Heathrow?

Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to London Heathrow from St. Louis. Booking flights from Lambert-St Louis (STL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 11 different airlines.

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

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

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

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

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

Yes. Cheapflights offers flight deals from St. Louis to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$293+ Flights from St. Louis to London Heathrow Airport

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Lambert-St Louis to London Heathrow are usually found in October or September, booked 34 days in advance, depart on a Friday or Monday and return on a Thursday

Find flight deals from St. Louis to Heathrow

Cheapest flights from St. Louis to Heathrow
Explore the most affordable flight options available from St. Louis to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

Wed 11/123:50 pmSTL - LHR

1 stop11h 55mLufthansa

Wed 11/196:30 amLHR - STL

1 stop13h 25mLufthansa

Deal found 10/29

$598

Wed 11/266:43 pmSTL - LHR

2 stops15h 07mLufthansa

Wed 12/36:30 amLHR - STL

1 stop13h 25mLufthansa

Deal found 10/30

$618

Wed 11/264:05 pmSTL - LHR

1 stop13h 15mMultiple Airlines

Wed 12/36:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/29

$622

Wed 11/124:05 pmSTL - LHR

1 stop13h 15mMultiple Airlines

Wed 11/196:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/29

$623

Mon 11/31:35 pmSTL - LHR

1 stop14h 05mUnited Airlines

Wed 11/196:30 amLHR - STL

1 stop13h 25mUnited Airlines

Deal found 10/30

$624

Tue 11/115:24 pmSTL - LHR

1 stop11h 51mUnited Airlines

Tue 11/186:50 amLHR - STL

2 stops14h 57mUnited Airlines

Deal found 10/28

$629

Wed 11/197:00 amSTL - LHR

1 stop20h 10mMultiple Airlines

Wed 11/266:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/29

$630

Wed 11/194:05 pmSTL - LHR

1 stop13h 15mMultiple Airlines

Fri 12/56:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/30

$631

Best flights from St. Louis to Heathrow
Discover carefully curated flight deals from St. Louis to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2025.

Tue 11/115:24 pmSTL - LHR

1 stop11h 51mUnited Airlines

Tue 11/186:50 amLHR - STL

2 stops14h 57mUnited Airlines

Deal found 10/28

$629

Wed 1/711:23 amSTL - LHR

1 stop13h 42mKLM

Wed 1/146:30 amLHR - STL

2 stops16h 09mKLM

Deal found 10/29

$638

Mon 11/2410:00 amSTL - LHR

2 stops15h 10mUnited Airlines

Wed 12/36:50 amLHR - STL

2 stops14h 50mUnited Airlines

Deal found 10/29

$629

Wed 11/196:30 amSTL - LHR

2 stops18h 40mUnited Airlines

Wed 11/266:50 amLHR - STL

2 stops14h 56mUnited Airlines

Deal found 10/29

$629

Wed 11/1911:37 amSTL - LHR

1 stop12h 43mUnited Airlines

Fri 12/56:30 amLHR - STL

1 stop13h 25mUnited Airlines

Deal found 10/29

$630

Sun 3/16:30 amSTL - LHR

1 stop17h 25mUnited Airlines

Fri 3/136:50 amLHR - STL

2 stops15h 54mUnited Airlines

Deal found 10/30

$637

Last-minute flights from St. Louis to Heathrow
Discover last-minute flight deals from St. Louis to Heathrow. Data last updated October 31, 2025 and is based on user searches.

Mon 11/31:35 pmSTL - LHR

1 stop14h 05mUnited Airlines

Wed 11/196:30 amLHR - STL

1 stop13h 25mUnited Airlines

Deal found 10/30

$624

Tue 11/117:00 amSTL - LHR

2 stops18h 10mUnited Airlines

Tue 11/186:50 amLHR - STL

2 stops14h 57mUnited Airlines

Deal found 10/28

$629

Wed 11/123:50 pmSTL - LHR

1 stop11h 55mLufthansa

Wed 11/196:30 amLHR - STL

1 stop13h 25mLufthansa

Deal found 10/29

$598

Wed 11/124:05 pmSTL - LHR

1 stop13h 15mMultiple Airlines

Wed 11/196:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/29

$623

Wed 11/197:00 amSTL - LHR

1 stop20h 10mMultiple Airlines

Wed 11/266:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/29

$630

Wed 11/194:05 pmSTL - LHR

1 stop13h 15mMultiple Airlines

Fri 12/56:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/30

$631

Wed 11/266:43 pmSTL - LHR

2 stops15h 07mLufthansa

Wed 12/36:30 amLHR - STL

1 stop13h 25mLufthansa

Deal found 10/30

$618

Wed 11/264:05 pmSTL - LHR

1 stop10h 25mMultiple Airlines

Wed 12/36:30 amLHR - STL

1 stop13h 25mMultiple Airlines

Deal found 10/30

$622

One-way flights from St. Louis to Heathrow
Search for one-way flight options from St. Louis to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 31, 2025.

Thu 11/1311:07 amSTL - LHR

3 stops41h 43mMultiple Airlines

Deal found 10/29

$293

Mon 2/95:11 pmSTL - LHR

3 stops37h 29mMultiple Airlines

Deal found 10/30

$308

Sun 2/15:44 pmSTL - LHR

2 stops37h 06mMultiple Airlines

Deal found 10/29

$313

Sun 2/152:55 pmSTL - LHR

2 stops39h 55mMultiple Airlines

Deal found 10/29

$380

Thu 2/1210:42 amSTL - LHR

2 stops20h 08mMultiple Airlines

Deal found 10/29

$405

Wed 1/711:22 amSTL - LHR

1 stop15h 03mAustrian Airlines

Deal found 10/30

$406

Wed 1/78:05 amSTL - LHR

2 stops17h 05mAir Canada

Deal found 10/30

$408

Fri 4/104:05 pmSTL - LHR

2 stops46h 55mUnited Airlines

Deal found 10/29

$410

Fri 4/104:05 pmSTL - LHR

1 stop11h 30mAir Canada

Deal found 10/29

$452

Cheap flight deals from St. Louis to Heathrow

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$598 (Kiwi.com)
One-way from	$293 (Kiwi.com)
Popular in	June
Cheapest in	October
Average price	$709
Good round-trip deal	$597 or less
Good one-way deal	$418 or less

Provider with most accurate pricing for Lambert-St Louis-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-London Heathrow flights.

Search Deals

From Lambert-St Louis to London Heathrow

Search Deals

One-way flight from Lambert-St Louis to London Heathrow

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($194 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to London Heathrow.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to London Heathrow.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Tue 11/11

5:24 pm-11:15 am

1 stop11h 51m

London Heathrow

Tue 11/18

6:50 am-3:47 pm

2 stops14h 57m

$629

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 11/24

10:00 am-7:10 am

2 stops15h 10m

London Heathrow

Wed 12/3

6:50 am-3:40 pm

2 stops14h 50m

$629

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 11/19

6:30 am-7:10 am

2 stops18h 40m

London Heathrow

Wed 11/26

6:50 am-3:46 pm

2 stops14h 56m

$629

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 11/19

11:37 am-6:20 am

1 stop12h 43m

London Heathrow

Fri 12/5

6:30 am-1:55 pm

1 stop13h 25m

$630

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 3/1

6:30 am-5:55 am

1 stop17h 25m

London Heathrow

Fri 3/13

6:50 am-5:44 pm

2 stops15h 54m

$637

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Wed 1/7

11:23 am-7:05 am

1 stop13h 42m

London Heathrow

Wed 1/14

6:30 am-4:39 pm

2 stops16h 09m

$638

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 11/13

11:07 am-10:50 am

3 stops41h 43m

$293

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Mon 2/9

5:44 pm-12:50 pm

2 stops37h 06m

$313

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Sun 2/1

5:44 pm-12:50 pm

2 stops37h 06m

$313

St. LouisLondon

STL - LHR

STLLHR

Lambert-St Louis

Thu 2/12

10:42 am-12:50 pm

2 stops20h 08m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 16 results

Compare providers for flights from St. Louis to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Heathrow in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*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 Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Heathrow Airport 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 Heathrow

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

Cheapflights Insights

Everything you need to know about your flight from St. Louis to London Heathrow Airport

Prices

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

To ensure you get the cheapest price possible for a flight from St. Louis to London Heathrow Airport, you should look to book at least 34 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of $530). Flying from St. Louis to London Heathrow Airport in June is currently the most expensive (average of $1,001). 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 LHR?

One of the essential ways to save on airfare from St. Louis to London Heathrow Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 24% on airfare.

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

Travelers seeking maximum savings on their St. Louis to London Heathrow Airport flight should consider departing on Thursday 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.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with United Airlines, American Airlines, and Air Canada from St. Louis to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

8,998 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

American Airlines

7.2

Good

11,033 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Air Canada

7.1

Good

10,378 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Iberia

7.0

Good

3,001 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

British Airways

6.7

Okay

7,487 reviews

United Airlines

7.4

Good

8,998 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

What airport do you fly from for flights from St. Louis to London Heathrow?
Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to London Heathrow from St. Louis. Booking flights from Lambert-St Louis (STL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 11 different airlines.
How long is the flight from St. Louis to London Heathrow Airport?
United Airlines can get you from St. Louis to London Heathrow Airport in just under 11h 51m. Your travel time can differ by up to . Airlines will cover a distance of 4186 mi.
What are the cheapest airlines flying from St. Louis to London Heathrow Airport round-trip?
According to our current data, KLM ($529), Air Canada ($573), and Delta ($580) offers the cheapest pricing from St. Louis to London Heathrow Airport. KLM is 41% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest flights from St. Louis to London Heathrow Airport?
While on average a flight from St. Louis to London Heathrow Airport is generally $634, our data shows the cheapest flight currently is $403. When looking at the most popular route, (Lambert-St Louis - London Heathrow), you can expect to pay $598 for that flight.
Can I find deals for flights from St. Louis to Heathrow that include hotel bookings?
Yes. In addition to deals on St. Louis to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Heathrow.
Can I find deals for business class flights from St. Louis to Heathrow?
Yes. Cheapflights offers flight deals from St. Louis to Heathrow 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 Heathrow Airport?
Currently, September is the cheapest month in which you can book a flight from St. Louis to London Heathrow Airport (average of $530). Flying from St. Louis to London Heathrow Airport in June is currently the most expensive (average of $1,001). 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 10 airlines flying from St. Louis to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest$529	Average$745	FlexibilityNo cancel fee	On-time75%
Air Canada	Cheapest$573	Average$929	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$580	Average$925	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$580	Average$889	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$580	Average$884	FlexibilityNo cancel fee	On-time70%
Iberia	Cheapest$597	Average$960	FlexibilityNo cancel fee	On-time77%
Scandinavian Airlines	Cheapest$602	Average$1,102	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$637	Average$898	FlexibilityNo cancel fee	On-time71%
Lufthansa	Cheapest$670	Average$888	FlexibilityNo cancel fee	On-time76%
Virgin Atlantic	Cheapest$747	Average$947	FlexibilityNo cancel fee	On-time72%

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$293+ Cheap flights from St. Louis (STL) to Heathrow (LHR)

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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to London Heathrow are usually found in October or September, booked 34 days in advance, depart on a Friday or Monday and return on a Thursday

Find flight deals from St. Louis to Heathrow

Cheapest flights from St. Louis to HeathrowExplore the most affordable flight options available from St. Louis to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

Explore the most affordable flight options available from St. Louis to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

Cheap flight deals from St. Louis to Heathrow

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to London Heathrow Airport that are best for you.

Compare providers for flights from St. Louis to Heathrow

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 Heathrow in October.

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

Have a flexible travel schedule? Discover the best time to fly to Heathrow from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to London Heathrow Airport

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

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

What is the cheapest time of day to fly from STL to LHR?

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

What’s the top layover airport for flights from St. Louis to London Heathrow Airport?

What’s the fastest layover option from St. Louis to London Heathrow Airport?

What’s the fastest layover option from St. Louis to London Heathrow Airport?

Which airport typically offers the quickest layover for flights from St. Louis to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with United Airlines, American Airlines, and Air Canada from St. Louis to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Heathrow. 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 Heathrow?

How long is the flight from St. Louis to London Heathrow Airport?

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

What are the cheapest flights from St. Louis to London Heathrow Airport?

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

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

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

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

Traveling to a place near London Heathrow Airport?

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Alternative routes for St. Louis to Heathrow

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Top 10 airlines flying from St. Louis to Heathrow

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Cheapest flights from St. Louis to Heathrow
Explore the most affordable flight options available from St. Louis to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.