Which airlines fly to St. Louis?

Finnair, British Airways and Lufthansa are the top three most popular airlines that fly to St. Louis from London according to our data. Finnair is the first choice among our users, with 55% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 10 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to Lambert-St Louis?

Lufthansa, British Airways, and United Airlines are the most popular carriers operating from London to Lambert-St Louis

Which stopover airport has the shortest travel time from London to St. Louis?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 15m.

Which airport is the most popular for stopovers for flights between London and St. Louis?

Chicago (ORD) was the most common stop: 44% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London to St. Louis?

Flights via Reykjavik (KEF) offer the lowest average return price of £443.

Which stopover airport has the shortest connection time from London to St. Louis?

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 03m.

What is the best way to get in and out of airports in London and St Louis?

Among the three most popular airports in London, the London Heathrow Airport (LHR) is the busiest. All London airports are connected to the airport terminals by train. If you depart from London Heathrow Airport (LHR), you can also use the bus, coach, or taxi. The Tube is one of the cheapest options, as it serves all terminals at London Heathrow Airport (LHR). For those who live in London’s outskirts, the bus will conveniently get you to Terminals 2 and 3. The TfL Rail and the Heathrow Express are the two primary train operators serving the London Heathrow Airport (LHR). The TfL Rail accesses all Terminals, while Heathrow Express serves Terminals 4 and 5. In St Louis, you will land at Lambert-St Louis Airport (STL). You can get to and from Lambert-St Louis Airport (STL) by bus, taxi, train, or car hire. Public buses are operated by the Greyhound Bus Service and MetroBus service. Buses operate regularly from Terminals 1 and 2 and take about 30min to get to the city centre. Taxis at Terminals 1 and 2 are the quickest way to get to and from the airport, taking about 20min. The MetroLink leaves the airport approximately every 10 to 30min, taking approximately 33min to get to the city centre, and operates from early morning to midnight. Which cities can you get to from St Louis? Flights from London to St Louis land at Lambert-St Louis Airport (STL). Passengers can then travel to the city centre by taxi, bus, or train. Some cities near St. Louis include Chesterfield, Wildwood, and Ellisville. You can travel to these cities by car, taxi, bus, or train. Taking a bus is one of the easiest, cheapest, and most popular ways to travel between the cities, taking one to a few hours. You can also use car hire services to travel around the country in your own time.

Which airlines fly direct from London to St Louis?

Unfortunately, no airlines offer direct flights from London to St Louis. The fastest flight from London to St. Louis takes approximately 13h 14min depending on flying conditions and air traffic around both airports. Airlines offering one-way flights from London to St Louis with one or two stopovers are Aer Lingus and Air Canada. Finnair and Delta Airlines offer the cheapest flights, while United Airlines and Air France offer the quickest flights from London to St Louis. Enjoy cheap flights from London to St Louis by booking your flight 56 days to take off. Some airlines that may not charge you when you cancel your flight if you provide a valid reason are Finnair, United Airlines, and American Airlines. Passengers can choose to fly from London City Airport (LCY), London Heathrow Airport (LHR) or London Gatwick Airport (LGW) to Lambert-St Louis Airport (STL).

What are the benefits of the different airports in London and St Louis?

While there are other efficient airports in London, most London to St Louis flights depart from London Heathrow Airport (LHR). London Heathrow Airport (LHR) terminals are numerous and a substantial distance apart, so plan ahead so that you arrive on time. Enjoy excellent hospitality in the restaurants, lounges or cafes spread throughout the airport. Children can have fun at the play areas in Terminals 2, 3, 4, and 5. There are also numerous charging ports where you can work and boost your devices before departure. Lambert-St Louis Airport (STL) has an interfaith chapel at both terminals. Enjoy great food, snacks, and drinks at the Wingtips and USO Lounges. The airport also offers cash machines and Banking services, duty-free shops, disability services, baby-feeding suites, eateries, massage centres, animal rest areas, medical services, and device charging ports. Remember that both airports have a no smoking policy.

When did momondo last update prices for flights from London to Lambert-St Louis Airport?

Prices for flights from London to Lambert-St Louis Airport are updated daily.

How many operators does momondo search for flights from London to Lambert-St Louis Airport?

As of October 2025, there are 10 operators available to choose from for flights from London to Lambert-St Louis Airport.

How old do you have to be to fly from London to Lambert-St Louis Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£189 Cheap Flights from London to St. Louis in 2025/26

Q: What is the typical price of a round-trip flight between London and St. Louis?

Prices are currently low for flights on this route. Typical prices usually range from £622 to £820. The lowest price recently found on this route was £541.

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11:30 - 16:07LHR-STL

34h 37m2 stops

13:57 - 07:50STL-LHR

11h 53m1 stop

£541Virgin Atlantic

Find Deal

Mon, 24 Nov - Mon, 8 Dec

09:55 - 18:25LHR-STL

14h 30m1 stop

18:45 - 09:15STL-LHR

32h 30m1 stop

£546British Airways

Find Deal

Mon, 24 Nov - Sun, 30 Nov

17:35 - 21:57LHR-STL

34h 22m2 stops

19:02 - 07:50STL-LHR

30h 48m1 stop

£547Virgin Atlantic

Find Deal

Mon, 8 Dec - Tue, 23 Dec

11:45 - 20:46LHR-STL

15h 01m2 stops

12:49 - 07:05STL-LHR

12h 16m1 stop

£550KLM

Find Deal

Mon, 24 Nov - Mon, 1 Dec

12:30 - 18:08LGW-STL

35h 38m2 stops

05:30 - 09:00STL-LGW

22h 30m2 stops

£551American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

11:20 - 19:30LGW-STL

38h 10m2 stops

05:30 - 07:30STL-LGW

21h 00m2 stops

£551American Airlines

Find Deal

Fri, 6 Mar - Tue, 10 Mar

10:05 - 19:29LHR-STL

15h 24m1 stop

18:02 - 12:20STL-LHR

12h 18m1 stop

£554Finnair

Find Deal

Tue, 13 Jan - Fri, 23 Jan

10:20 - 19:29LHR-STL

39h 09m2 stops

11:55 - 06:50STL-LHR

12h 55m1 stop

£557Finnair

Find Deal

Tue, 13 Jan - Fri, 23 Jan

06:30 - 16:49LHR-STL

16h 19m2 stops

12:49 - 07:05STL-LHR

12h 16m1 stop

£581KLM

Find Deal

Thu, 27 Nov - Thu, 4 Dec

10:45 - 09:03LHR-STL

28h 18m2 stops

09:34 - 06:50STL-LHR

15h 16m1 stop

£612Iberia

Find Deal

Thu, 8 Jan - Fri, 16 Jan

British Airways flights from London to St. Louis

Our best British Airways deals on London to St. Louis flight tickets

British Airways

24 Nov

LHR09:55London Heathrow

14h 30m

1 stop

STL18:25Lambert-St Louis

30 Nov

STL18:45Lambert-St Louis

32h 30m

1 stop

LHR09:15London Heathrow

£546

Find similar

British Airways

22 Jan

LHR09:55London Heathrow

14h 39m

1 stop

STL18:34Lambert-St Louis

12 Feb

STL14:19Lambert-St Louis

12h 16m

1 stop

LHR08:35London Heathrow

£564

Find similar

British Airways

13 Jan

LHR11:45London Heathrow

12h 49m

1 stop

STL18:34Lambert-St Louis

23 Jan

STL11:55Lambert-St Louis

12h 55m

1 stop

LHR06:50London Heathrow

£566

Find similar

American Airlines flights from London to St. Louis

Our best American Airlines deals on London to St. Louis flight tickets

American Airlines

5 Mar

LGW12:30London Gatwick

35h 38m

2 stops

STL18:08Lambert-St Louis

9 Mar

STL05:30Lambert-St Louis

22h 30m

2 stops

LGW09:00London Gatwick

£550

Find similar

American Airlines

6 Mar

LGW11:20London Gatwick

38h 10m

2 stops

STL19:30Lambert-St Louis

10 Mar

STL05:30Lambert-St Louis

21h 00m

2 stops

LGW07:30London Gatwick

£551

Find similar

American Airlines

5 Mar

LHR11:55London Heathrow

13h 31m

1 stop

STL19:26Lambert-St Louis

9 Mar

STL14:36Lambert-St Louis

11h 44m

1 stop

LHR07:20London Heathrow

£582

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 24/11

11:30-16:07

2 stops34h 37m

Lambert-St Louis

Mon 8/12

13:57-07:50

1 stop11h 53m

£541

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

£546

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 8/12

17:35-21:57

2 stops34h 22m

Lambert-St Louis

Tue 23/12

19:02-07:50

1 stop30h 48m

£547

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

£550

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 5/3

12:30-18:08

2 stops35h 38m

Lambert-St Louis

Mon 9/3

05:30-09:00

2 stops22h 30m

£550

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 6/3

11:20-19:30

2 stops38h 10m

Lambert-St Louis

Tue 10/3

05:30-07:30

2 stops21h 00m

£551

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 13/1

10:05-19:29

1 stop15h 24m

Lambert-St Louis

Fri 23/1

18:02-12:20

1 stop12h 18m

£554

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 13/1

10:20-19:29

2 stops39h 09m

Lambert-St Louis

Fri 23/1

11:55-06:50

1 stop12h 55m

£557

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 27/11

06:30-16:49

2 stops16h 19m

Lambert-St Louis

Thu 4/12

12:49-07:05

1 stop12h 16m

£581

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 8/1

10:45-09:03

2 stops28h 18m

Lambert-St Louis

Fri 16/1

09:34-06:50

1 stop15h 16m

£612

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Stopovers

What is the typical price of a round-trip flight between London and St. Louis?

What is the cheapest month to fly to St. Louis?

The month of March is, on average, the cheapest month to fly to St. Louis from London, with most prices found around £560. If you’re not able to fly to St. Louis in March, then January is your next best option. Flight prices from London to St. Louis during January average around £569.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Sunday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as £463. Flights from London to St. Louis on a Saturday will generally be more expensive and average around £696. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to St. Louis?

Our data shows that the cheapest London to St. Louis flights are usually those with departure times in the afternoon. Our users have found flights to St. Louis in the afternoon for as low as £463. In contrast, the most expensive time of day to depart to St. Louis is in the morning when prices are around £669.

What is the cheapest London to Lambert-St Louis flight route?

Fly from London Heathrow to Lambert-St Louis for the best London - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from London when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around £739 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from London for as low as £662 on momondo.

What cabin class options are available on London to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on London to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to St. Louis flights?

You could potentially save up to 27% on your flight if you consider stops on a London to St. Louis flight.

How have London to St. Louis flight prices changed over time?

As of October 2025, prices for London to St. Louis flights are approximately 27% more expensive when compared to flights at the same time last year.

When to book flights from London to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from London to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to St. Louis (LON to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to St. Louis

Best price found	£463
Fastest flight time	9h 05m
Direct flights	Sat
Airports in St. Louis	1 airport

The best flight deal from London to St. Louis found on momondo in the last 72 hours is £463

The fastest flight from London to St. Louis takes 9h 05m

Direct flights go from London to St. Louis on Saturday. There are no airlines offering direct flights..

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

How far is London to Lambert-St Louis by plane?
The distance between London and Lambert-St Louis is about 4197.7 mi. Flights usually cover this in 9h 05m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Lambert-St Louis Airport?
Prices for flights from London to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from London to Lambert-St Louis Airport?
As of October 2025, there are 10 operators available to choose from for flights from London to Lambert-St Louis Airport.
How old do you have to be to fly from London to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to St. Louis?
Based on momondo bookings for flights between London and St. Louis, the leading plane model is Boeing 787-8 Dreamliner, making up 100.00% of the total bookings.
What is the most popular airline from London to St. Louis?
momondo data reveals that the most frequently booked airline on the route from London to St. Louis is Finnair, representing 36% of all bookings. The subsequent popular airlines are British Airways at 20%, Iberia at 9%, and Lufthansa at 8%.

Best airlines flying from London to St. Louis

Compare and see reviews for airlines that fly from London to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom £89	Free Cancellation	Rating 7.2 11,030 reviews	Search American Airlines flights
Scandinavian Airlines	PriceFrom £486	Free Cancellation	Rating 7.4 1,545 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom £510	Free Cancellation	Rating 7.7 1,406 reviews	Search KLM flights
Finnair	PriceFrom £516	Free Cancellation	Rating 7.6 1,333 reviews	Search Finnair flights
Air Canada	PriceFrom £613	Free Cancellation	Rating 7.1 10,377 reviews	Search Air Canada flights
British Airways	PriceFrom £620	Free Cancellation	Rating 6.7 7,487 reviews	Search British Airways flights
United Airlines	PriceFrom £634	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights
Iberia	PriceFrom £635	Free Cancellation	Rating 7.0 3,001 reviews	Search Iberia flights
Lufthansa	PriceFrom £702	Free Cancellation	Rating 6.8 7,541 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom £707	Free Cancellation	Rating 7.5 670 reviews	Search Virgin Atlantic flights

St. Charles

Collinsville

Why use momondo?

Why should I use momondo to find a flight deal from London to St. Louis?

Finding the right flight to St. Louis from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from London to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from London to St. Louis?

Once you have performed a search for London to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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Cheap flights from London to St. Louis from £189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to St. Louis departing on 15/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from London to St. Louis

Our best British Airways deals on London to St. Louis flight tickets

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Our best American Airlines deals on London to St. Louis flight tickets

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How to get the cheapest flight ticket from London to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and St. Louis?

What is the cheapest month to fly to St. Louis?

The month of March is, on average, the cheapest month to fly to St. Louis from London, with most prices found around £560. If you’re not able to fly to St. Louis in March, then January is your next best option. Flight prices from London to St. Louis during January average around £569.

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

What is the cheapest London to Lambert-St Louis flight route?

Fly from London Heathrow to Lambert-St Louis for the best London - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

What cabin class options are available on London to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on London to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to St. Louis flights?

You could potentially save up to 27% on your flight if you consider stops on a London to St. Louis flight.

How have London to St. Louis flight prices changed over time?

As of October 2025, prices for London to St. Louis flights are approximately 27% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London to Lambert-St Louis?

Lufthansa, British Airways, and United Airlines are the most popular carriers operating from London to Lambert-St Louis

Which airlines fly to St. Louis?

Which airport is the most popular for stopovers for flights between London and St. Louis?

Chicago (ORD) was the most common stop: 44% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London to St. Louis?

Flights via Reykjavik (KEF) offer the lowest average return price of £443.

Which stopover airport has the shortest travel time from London to St. Louis?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 15m.

Which stopover airport has the shortest connection time from London to St. Louis?

Reykjavik (KEF) has the shortest average stopover time for this route: 1h 03m.

When to book flights from London to St. Louis

Cheap London to St. Louis (LON to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to St. Louis

Best price found

Fastest flight time

Direct flights

Airports in St. Louis

How far is London to Lambert-St Louis by plane?

When did momondo last update prices for flights from London to Lambert-St Louis Airport?

How many operators does momondo search for flights from London to Lambert-St Louis Airport?

How old do you have to be to fly from London to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from London to St. Louis?

What is the most popular airline from London to St. Louis?

Best airlines flying from London to St. Louis

Compare and see reviews for airlines that fly from London to St. Louis with momondo

Travelling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from London to St. Louis?

Can I find flights from London to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from London to St. Louis?

I’m not ready to book a flight from London to St. Louis right now. Can momondo alert me if prices change?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri