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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £377.

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

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 11h 05m.

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 0h 55m.

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

Chicago (ORD) – chosen by Cheapflights users on 60% of one-stop itineraries from London Heathrow Airport to St. Louis on Cheapflights.

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

Departing from London Heathrow Airport to St. Louis will take you 14h 30m. London Heathrow Airport and St. Louis are separated by a distance of 4186 mi. This flight may include one or multiple stops.

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 £88. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from £483, and KLM, from £507. American Airlines is priced at 87% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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

While on average a flight from London Heathrow Airport to St. Louis is generally £460, our data shows the cheapest flight currently is £458. When looking at the most popular route, (London Heathrow - Lambert-St Louis), you can expect to pay £521 for that flight.

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

Before booking your flight from London Heathrow Airport to St. Louis check out the most popular airlines for this route: Finnair, British Airways or Lufthansa.

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

For a flight from London Heathrow to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from London Heathrow per day. 10 airlines have flights to Lambert-St Louis from London Heathrow on a regular basis.

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 holiday 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.

£394+ Flights from London Heathrow Airport to St. Louis

Cheapflights Tip: The best prices from London Heathrow to Lambert-St Louis are usually found in February or March, booked 58 days in advance, depart on a Saturday or Monday and return on a Tuesday

Cheap flight deals from Heathrow to St. Louis

Round-trip from	£538
One-way from	£394
Popular in	December
Cheapest in	February
Average price	£737
Good round-trip deal	£460 or less

Virgin Atlantic
24/11-8/12
3 total stops
46h 30m total
London to St. Louis

Search Deals

10/12
3 total stops
35h 07m total
London to St. Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£13 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

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

Search Deals

Find flight deals from Heathrow to St. Louis

Enter your travel dates to find the best prices.

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 29 October 2025.

Mon 24/1111:30LHR - STL

2 stops34h 37mVirgin Atlantic

Mon 8/1213:57STL - LHR

1 stop11h 53mVirgin Atlantic

Deal found 27/10£538

Mon 24/1109:55LHR - STL

1 stop14h 30mBritish Airways

Sun 30/1118:45STL - LHR

1 stop32h 30mBritish Airways

Deal found 27/10£542

Mon 8/1217:35LHR - STL

2 stops34h 22mVirgin Atlantic

Tue 23/1219:02STL - LHR

1 stop30h 48mVirgin Atlantic

Deal found 28/10£543

Mon 24/1109:55LHR - STL

1 stop13h 10mMultiple Airlines

Mon 8/1214:54STL - LHR

1 stop10h 06mMultiple Airlines

Deal found 27/10£544

Mon 24/1111:45LHR - STL

2 stops15h 01mKLM

Mon 1/1212:49STL - LHR

1 stop12h 16mKLM

Deal found 27/10£546

Wed 3/1211:45LHR - STL

2 stops15h 02mKLM

Wed 10/1214:02STL - LHR

1 stop11h 48mKLM

Deal found 28/10£547

Mon 24/1111:30LHR - STL

2 stops16h 28mVirgin Atlantic

Sun 30/1109:04STL - LHR

1 stop16h 01mVirgin Atlantic

Deal found 27/10£558

Thu 27/1117:05LHR - STL

1 stop22h 18mFinnair

Thu 4/1214:54STL - LHR

1 stop10h 06mFinnair

Deal found 28/10£563

Thu 27/1110:45LHR - STL

1 stop13h 50mVirgin Atlantic

Thu 4/1217:12STL - LHR

1 stop12h 28mVirgin Atlantic

Deal found 28/10£567

Mon 24/1114:45LHR - STL

1 stop14h 22mBritish Airways

Mon 1/1215:43STL - LHR

1 stop10h 32mBritish Airways

Deal found 28/10£570

Wed 12/1112:10LHR - STL

1 stop15h 09mFinnair

Thu 20/1111:42STL - LHR

1 stop14h 53mFinnair

Deal found 27/10£573

Thu 27/1106:30LHR - STL

2 stops16h 19mKLM

Thu 4/1212:49STL - LHR

1 stop12h 16mKLM

Deal found 28/10£577

Best flights from Heathrow to St. Louis
Discover carefully curated flight deals from Heathrow to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 October 2025.

Mon 24/1109:55LHR - STL

1 stop14h 30mBritish Airways

Sun 30/1118:45STL - LHR

1 stop32h 30mBritish Airways

Deal found 27/10£542

Mon 8/1211:45LHR - STL

1 stop12h 58mMultiple Airlines

Tue 23/1211:41STL - LHR

1 stop16h 19mMultiple Airlines

Deal found 28/10£544

Mon 24/1110:00LHR - STL

2 stops16h 46mDelta

Mon 8/1211:40STL - LHR

2 stops15h 05mDelta

Deal found 27/10£546

Mon 24/1111:45LHR - STL

2 stops15h 01mKLM

Mon 1/1212:49STL - LHR

1 stop12h 16mKLM

Deal found 27/10£546

Tue 25/1106:30LHR - STL

2 stops15h 37mVirgin Atlantic

Tue 2/1214:11STL - LHR

2 stops14h 39mVirgin Atlantic

Deal found 27/10£546

Tue 25/1106:30LHR - STL

2 stops15h 37mKLM

Tue 2/1214:38STL - LHR

1 stop12h 07mKLM

Deal found 27/10£546

Wed 3/1208:40LHR - STL

2 stops18h 07mDelta

Wed 10/1209:30STL - LHR

2 stops17h 15mDelta

Deal found 28/10£547

Thu 22/109:55LHR - STL

1 stop14h 39mBritish Airways

Thu 12/214:19STL - LHR

1 stop12h 16mBritish Airways

Deal found 27/10£560

Thu 27/1106:30LHR - STL

2 stops16h 19mMultiple Airlines

Thu 4/1219:02STL - LHR

1 stop10h 38mMultiple Airlines

Deal found 28/10£577

Wed 3/1211:45LHR - STL

2 stops15h 02mKLM

Wed 10/1214:02STL - LHR

1 stop11h 48mKLM

Deal found 28/10£547

Mon 24/1114:45LHR - STL

1 stop14h 22mBritish Airways

Mon 1/1215:43STL - LHR

1 stop10h 32mBritish Airways

Deal found 28/10£570

Tue 13/111:45LHR - STL

2 stops17h 54mDelta

Fri 23/109:59STL - LHR

2 stops14h 56mDelta

Deal found 27/10£582

Last-minute flights from Heathrow to St. Louis
Discover last-minute flight deals from Heathrow to St. Louis. Data last updated 29 October 2025 and is based on user searches.

Wed 12/1112:10LHR - STL

1 stop15h 09mFinnair

Thu 20/1111:42STL - LHR

1 stop14h 53mFinnair

Deal found 27/10£573

Wed 12/1106:30LHR - STL

2 stops15h 37mVirgin Atlantic

Thu 20/1109:04STL - LHR

1 stop16h 01mVirgin Atlantic

Deal found 27/10£589

Mon 24/1111:30LHR - STL

2 stops34h 37mVirgin Atlantic

Mon 8/1213:57STL - LHR

1 stop11h 53mVirgin Atlantic

Deal found 27/10£538

Mon 24/1109:55LHR - STL

1 stop14h 30mBritish Airways

Sun 30/1118:45STL - LHR

1 stop32h 30mBritish Airways

Deal found 27/10£542

Mon 24/1109:55LHR - STL

1 stop13h 10mMultiple Airlines

Mon 8/1214:54STL - LHR

1 stop10h 06mMultiple Airlines

Deal found 27/10£544

Mon 24/1110:00LHR - STL

2 stops16h 46mDelta

Mon 8/1211:40STL - LHR

2 stops15h 05mDelta

Deal found 27/10£546

Mon 24/1111:30LHR - STL

2 stops16h 28mVirgin Atlantic

Sun 30/1109:04STL - LHR

1 stop16h 01mVirgin Atlantic

Deal found 27/10£558

Mon 24/1114:45LHR - STL

1 stop14h 22mBritish Airways

Mon 1/1215:43STL - LHR

1 stop10h 32mBritish Airways

Deal found 28/10£570

Thu 27/1117:05LHR - STL

1 stop22h 18mFinnair

Thu 4/1214:54STL - LHR

1 stop10h 06mFinnair

Deal found 28/10£563

Thu 27/1110:45LHR - STL

1 stop13h 50mVirgin Atlantic

Thu 4/1217:12STL - LHR

1 stop12h 28mVirgin Atlantic

Deal found 28/10£567

Thu 27/1106:30LHR - STL

2 stops16h 19mKLM

Thu 4/1212:49STL - LHR

1 stop12h 16mKLM

Deal found 28/10£577

One-way flights from Heathrow to St. Louis
Search for one-way flight options from Heathrow to St. Louis. Find affordable one-way fares based on user searches. Data last updated 29 October 2025.

Wed 10/1206:00LHR - STL

3 stops35h 07mMultiple Airlines

Deal found 28/10£394

Thu 13/1114:50LHR - STL

2 stops31h 11mMultiple Airlines

Deal found 27/10£397

Mon 3/1107:50LHR - STL

2 stops22h 06mAer Lingus

Deal found 27/10£437

Sat 22/1114:50LHR - STL

2 stops29h 39mMultiple Airlines

Deal found 26/10£458

Sun 2/1108:50LHR - STL

2 stops21h 06mAer Lingus

Deal found 27/10£459

Tue 4/1115:15LHR - STL

3 stops56h 42mMultiple Airlines

Deal found 27/10£461

Thu 11/1209:50LHR - STL

3 stops29h 57mMultiple Airlines

Deal found 28/10£482

Thu 11/1212:10LHR - STL

2 stops17h 28mAer Lingus

Deal found 28/10£482

Sun 30/1115:15LHR - STL

3 stops49h 30mMultiple Airlines

Deal found 28/10£484

Fri 12/1220:35LHR - STL

3 stops43h 12mMultiple Airlines

Deal found 28/10£510

Sat 13/1219:30LHR - STL

3 stops34h 08mMultiple Airlines

Deal found 28/10£530

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

09:55-18:25

1 stop14h 30m

Lambert-St Louis

Sun 30/11

18:45-09:15

1 stop32h 30m

£542

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/12

11:45-18:43

1 stop12h 58m

Lambert-St Louis

Tue 23/12

11:41-10:00

1 stop16h 19m

£544

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

10:00-20:46

2 stops16h 46m

Lambert-St Louis

Mon 8/12

11:40-08:45

2 stops15h 05m

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

11:45-20:46

2 stops15h 01m

Lambert-St Louis

Mon 1/12

12:49-07:05

1 stop12h 16m

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 25/11

06:30-16:07

2 stops15h 37m

Lambert-St Louis

Tue 2/12

14:11-10:50

2 stops14h 39m

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 25/11

06:30-16:07

2 stops15h 37m

Lambert-St Louis

Tue 2/12

14:38-08:45

1 stop12h 07m

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 3/12

08:40-20:47

2 stops18h 07m

Lambert-St Louis

Wed 10/12

09:30-08:45

2 stops17h 15m

£547

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 3/12

11:45-20:47

2 stops15h 02m

Lambert-St Louis

Wed 10/12

14:02-07:50

1 stop11h 48m

£547

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 22/1

09:55-18:34

1 stop14h 39m

Lambert-St Louis

Thu 12/2

14:19-08:35

1 stop12h 16m

£560

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

14:45-23:07

1 stop14h 22m

Lambert-St Louis

Mon 1/12

15:43-08:15

1 stop10h 32m

£570

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 23 results

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 return 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 London Heathrow Airport to St. Louis

Prices

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

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to St. Louis, you should look to book at least 58 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 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 £409). Flying from London Heathrow Airport to St. Louis in July is currently the most expensive (average of £622). 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?

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the morning.

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

Travellers seeking maximum savings on their London Heathrow Airport to St. Louis flight should consider departing on Sunday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Louis

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

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,333 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

United Airlines

7.4

Good

9,001 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Iberia

7.0

Good

3,001 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,535 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,483 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

What airport do you fly into for flights to St. Louis from London Heathrow?
For a flight from London Heathrow to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from London Heathrow per day. 10 airlines have flights to Lambert-St Louis from London Heathrow on a regular basis.
How long is the flight from London Heathrow Airport to St. Louis?
Departing from London Heathrow Airport to St. Louis will take you 14h 30m. London Heathrow Airport and St. Louis are separated by a distance of 4186 mi. This flight may include one or multiple stops.
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 £88. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from £483, and KLM, from £507. American Airlines is priced at 87% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest flights from London Heathrow Airport to St. Louis?
While on average a flight from London Heathrow Airport to St. Louis is generally £460, our data shows the cheapest flight currently is £458. When looking at the most popular route, (London Heathrow - Lambert-St Louis), you can expect to pay £521 for that flight.
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 holiday 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 £409). Flying from London Heathrow Airport to St. Louis in July is currently the most expensive (average of £622). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to St. Louis

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Complete your trip

St. Louis car hire

Lambert-St Louis Airport car hire

Springfield Capital Airport car hire

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Central West End car hire

Midtown car hire

Soulard car hire

Direct flights to United States

Top 10 airlines flying from Heathrow to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest£88	Average£772	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Scandinavian Airlines	Cheapest£483	Average£625	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
KLM	Cheapest£507	Average£848	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	Cheapest£513	Average£660	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air Canada	Cheapest£609	Average£760	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£616	Average£816	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£630	Average£768	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£631	Average£726	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Lufthansa	Cheapest£698	Average£816	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£702	Average£862	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to St. Louis?

Cheapflights makes it easy to find Heathrow to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to St. Louis?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Heathrow.

Can Cheapflights find flights from Heathrow to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London Heathrow Airport to St. Louis from £394

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to Lambert-St Louis are usually found in February or March, booked 58 days in advance, depart on a Saturday or Monday and return on a Tuesday

Cheap flight deals from Heathrow to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from Heathrow to St. Louis

Cheapest flights from Heathrow to St. LouisExplore 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 29 October 2025.

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 29 October 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

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

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

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

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

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

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

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

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

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Finnair, United Airlines, andIberia from London Heathrow Airport to St. Louis 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 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?

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Heathrow to St. Louis

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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 29 October 2025.