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

Our cheapest airline available from London to St. Louis is Finnair. Our recent data shows that you can find tickets from as low as £540 on this airline. Additional options worth looking into are Scandinavian Airlines and Lufthansa, starting at £721 and £734 round-trip. These flights start at 25% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from London to St. Louis one-way?

To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £451. Aer Lingus flights start at £627 while deals on Lufthansa start at £630 one-way.

What are the most popular routes from London to St. Louis?

When deciding which route to take from London to St. Louis consider London Heathrow - Lambert-St Louis, London Gatwick - Lambert-St Louis or London City - Lambert-St Louis as they are the most popular.

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

Air Canada, Finnair and British Airways are the most popular airlines when flying from London to St. Louis.

What is the cheapest day to fly round-trip from London to St. Louis?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 19%.

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

Users have found that booking a flight from London to St. Louis at least 20 days early can save you up to 50% on average compared to booking a flight this week. If booking 20 days before your flight isn’t an option for you, users have found flights from London to St. Louis for as little as £568 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £1,172 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to St. Louis. Flights to St. Louis from London in January are about £726 on average during January, but can be found for as low as £531.

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

Lambert-St Louis (STL) is the airport you will fly into if you book a flight from London to St. Louis. You should not have trouble finding flights to Lambert-St Louis from London; the airport handles an average of 0 inbound flights from London per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the St. Louis airport from London. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from London 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.

£255+ Flights from London to St. Louis

The best prices from London to Lambert-St Louis are usually found in January or March, booked 19 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from London to St. Louis

Round-trip from	£540
One-way from	£255
Popular in	December
Cheapest in	January
Average price	£600

Finnair
4/3-11/3
2 total stops
30h 29m total
London to St. Louis

Search Deals

6/3
1 total stop
15h 49m total
London to St. Louis

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£39 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from London to St. Louis

Cheapest flights from London to St. Louis
Explore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Tue 4/311:45LHR - STL

1 stop17h 55mFinnair

Tue 11/316:26STL - LHR

1 stop12h 34mFinnair

Deal found 20/2£540

Sat 1/314:00LGW - STL

1 stop15h 43mMultiple Airlines

Wed 5/318:43STL - LGW

1 stop33h 52mMultiple Airlines

Deal found 20/2£589

Tue 13/506:40LHR - STL

2 stops19h 03mMultiple Airlines

Tue 20/507:30STL - LHR

2 stops28h 10mMultiple Airlines

Deal found 20/2£687

Wed 5/307:45LTN - STL

3 stops38h 57mMultiple Airlines

Sun 9/316:45STL - LTN

2 stops24h 15mMultiple Airlines

Deal found 20/2£706

Wed 5/309:25LCY - STL

3 stops32h 45mMultiple Airlines

Sun 9/312:15STL - LCY

3 stops19h 35mMultiple Airlines

Deal found 20/2£717

Wed 26/306:40LHR - STL

2 stops21h 51mScandinavian Airlines

Mon 31/313:06STL - LHR

2 stops23h 24mScandinavian Airlines

Deal found 19/2£721

Fri 14/308:30LHR - STL

2 stops37h 41mLufthansa

Mon 7/409:39STL - LHR

1 stop14h 41mLufthansa

Deal found 20/2£734

Thu 6/307:40LHR - STL

2 stops15h 31mUnited Airlines

Thu 3/415:40STL - LHR

2 stops13h 45mUnited Airlines

Deal found 19/2£743

Fri 18/412:30LHR - STL

1 stop14h 57mBritish Airways

Fri 25/405:45STL - LHR

1 stop19h 35mBritish Airways

Deal found 19/2£753

Tue 4/306:30LHR - STL

2 stops17h 31mDelta

Tue 11/310:30STL - LHR

2 stops14h 55mDelta

Deal found 20/2£768

Wed 5/311:00STN - STL

3 stops35h 42mMultiple Airlines

Sun 9/316:45STL - STN

2 stops24h 50mMultiple Airlines

Deal found 20/2£789

Fri 14/310:00LCY - STL

2 stops18h 32mLufthansa

Mon 7/417:35STL - LCY

2 stops16h 50mLufthansa

Deal found 20/2£800

Best flights from London to St. Louis
Discover carefully curated flight deals from London to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Tue 4/311:45LHR - STL

1 stop17h 55mFinnair

Tue 11/316:26STL - LHR

1 stop12h 34mFinnair

Deal found 20/2£540

Sat 1/314:00LGW - STL

1 stop15h 43mMultiple Airlines

Wed 5/318:43STL - LGW

1 stop33h 52mMultiple Airlines

Deal found 20/2£589

Wed 26/306:40LHR - STL

2 stops21h 51mScandinavian Airlines

Mon 31/313:06STL - LHR

2 stops23h 24mScandinavian Airlines

Deal found 19/2£721

Fri 14/308:30LHR - STL

2 stops37h 41mLufthansa

Mon 7/409:39STL - LHR

1 stop14h 41mLufthansa

Deal found 20/2£734

Thu 6/307:40LHR - STL

2 stops15h 31mUnited Airlines

Thu 3/415:40STL - LHR

2 stops13h 45mUnited Airlines

Deal found 19/2£743

Fri 18/412:30LHR - STL

1 stop14h 57mBritish Airways

Fri 25/405:45STL - LHR

1 stop19h 35mBritish Airways

Deal found 19/2£753

Tue 4/306:30LHR - STL

2 stops17h 31mDelta

Tue 11/310:30STL - LHR

2 stops14h 55mDelta

Deal found 20/2£768

Fri 14/307:45LCY - STL

2 stops18h 55mVirgin Atlantic

Mon 7/410:30STL - LCY

2 stops14h 45mVirgin Atlantic

Deal found 20/2£819

Tue 18/310:00LHR - STL

2 stops41h 18mIberia

Sat 22/315:48STL - LHR

1 stop34h 32mIberia

Deal found 19/2£831

Sat 1/310:00LCY - STL

2 stops19h 36mKLM

Wed 5/310:26STL - LCY

2 stops14h 49mKLM

Deal found 20/2£875

Fri 11/411:05LHR - STL

1 stop12h 18mAustrian Airlines

Fri 25/407:25STL - LHR

1 stop22h 00mAustrian Airlines

Deal found 20/2£890

Fri 11/414:05LHR - STL

2 stops30h 44mAir Canada

Fri 25/415:30STL - LHR

2 stops12h 30mAir Canada

Deal found 19/2£894

Last-minute flights from London to St. Louis
Discover last-minute flight deals from London to St. Louis. Data last updated 21 February 2025 and is based on user searches.

Sat 1/311:45LHR - STL

1 stop17h 55mFinnair

Wed 5/311:55STL - LHR

1 stop15h 20mFinnair

Deal found 20/2£565

Sat 1/314:00LGW - STL

1 stop15h 43mMultiple Airlines

Wed 5/318:43STL - LGW

1 stop33h 52mMultiple Airlines

Deal found 20/2£589

Sat 1/310:00LHR - STL

2 stops15h 15mLufthansa

Wed 5/308:40STL - LHR

2 stops15h 15mLufthansa

Deal found 20/2£748

Sat 1/310:00LCY - STL

2 stops19h 36mKLM

Wed 5/310:26STL - LCY

2 stops14h 49mKLM

Deal found 20/2£875

Sat 1/310:00LCY - STL

2 stops19h 36mMultiple Airlines

Wed 5/315:45STL - LCY

1 stop11h 40mMultiple Airlines

Deal found 20/2£2,930

Tue 4/311:45LHR - STL

1 stop17h 55mFinnair

Tue 11/316:26STL - LHR

1 stop12h 34mFinnair

Deal found 20/2£540

Tue 4/306:30LHR - STL

2 stops17h 31mDelta

Tue 11/310:30STL - LHR

2 stops14h 55mDelta

Deal found 20/2£768

Wed 5/307:45LTN - STL

3 stops38h 57mMultiple Airlines

Sun 9/316:45STL - LTN

2 stops24h 15mMultiple Airlines

Deal found 20/2£706

Wed 5/309:25LCY - STL

3 stops32h 45mMultiple Airlines

Sun 9/312:15STL - LCY

3 stops19h 35mMultiple Airlines

Deal found 20/2£717

Wed 5/311:00STN - STL

3 stops35h 42mMultiple Airlines

Sun 9/316:45STL - STN

2 stops24h 50mMultiple Airlines

Deal found 20/2£789

Fri 14/308:30LHR - STL

2 stops37h 41mLufthansa

Mon 7/409:39STL - LHR

1 stop14h 41mLufthansa

Deal found 20/2£734

Fri 14/306:30LHR - STL

1 stop13h 25mUnited Airlines

Mon 7/413:12STL - LHR

2 stops15h 28mUnited Airlines

Deal found 20/2£740

One-way flights from London to St. Louis
Search for one-way flight options from London to St. Louis. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Thu 6/314:00LGW - STL

1 stop15h 49mMultiple Airlines

Deal found 20/2£255

Thu 3/418:20STN - STL

3 stops59h 26mMultiple Airlines

Deal found 19/2£274

Thu 6/317:50LTN - STL

3 stops59h 59mMultiple Airlines

Deal found 20/2£351

Fri 28/214:50LHR - STL

3 stops35h 02mMultiple Airlines

Deal found 20/2£374

Fri 28/214:50LHR - STL

2 stops38h 46mWestJet

Deal found 20/2£451

Mon 12/506:45LCY - STL

2 stops18h 58mMultiple Airlines

Deal found 19/2£561

Tue 25/212:10LHR - STL

2 stops15h 52mAer Lingus

Deal found 19/2£627

Wed 26/206:30LHR - STL

1 stop13h 25mLufthansa

Deal found 19/2£630

Fri 18/414:25LHR - STL

1 stop13h 47mBritish Airways

Deal found 19/2£687

Tue 25/209:25LHR - STL

1 stop16h 04mFinnair

Deal found 19/2£755

Thu 6/318:15LCY - STL

1 stop25h 40mLufthansa

Deal found 20/2£821

Fri 14/316:55LGW - STL

2 stops27h 36mTurkish Airlines

Deal found 20/2£848

Find flights from London to St. Louis within your budget

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 4/3

11:45-23:40

1 stop17h 55m

Lambert-St Louis

Tue 11/3

16:26-10:00

1 stop12h 34m

£540

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Wed 23/4

11:40-17:16

3 stops35h 36m

Lambert-St Louis

Tue 29/4

18:11-10:40

3 stops34h 29m

£578

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Wed 23/4

14:00-00:04

1 stop16h 04m

Lambert-St Louis

Tue 29/4

17:41-10:00

1 stop34h 19m

£585

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 23/4

13:30-20:58

1 stop13h 28m

Lambert-St Louis

Tue 29/4

15:29-07:20

1 stop9h 51m

£670

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 13/5

06:40-19:43

2 stops19h 03m

Lambert-St Louis

Tue 20/5

07:30-17:40

2 stops28h 10m

£687

LondonSt. Louis

LTN - STL

LTNSTL

London Luton

Wed 5/3

07:45-16:42

3 stops38h 57m

Lambert-St Louis

Sun 9/3

16:45-22:00

2 stops24h 15m

£706

LondonSt. Louis

LCY - STL

LCYSTL

London City

Wed 5/3

09:25-12:10

3 stops32h 45m

Lambert-St Louis

Sun 9/3

12:15-12:50

3 stops19h 35m

£717

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Fri 14/3

08:30-17:11

2 stops37h 41m

Lambert-St Louis

Mon 7/4

09:39-06:20

1 stop14h 41m

£734

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 8/3

07:40-21:49

2 stops20h 09m

Lambert-St Louis

Sat 15/3

16:29-07:30

1 stop34h 01m

£743

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 4/3

06:30-18:01

2 stops17h 31m

Lambert-St Louis

Tue 11/3

10:30-06:25

2 stops14h 55m

£768

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 42 results

...

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from London 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.

Travel insights for flights from London to St. Louis

Get recent, data-driven insights about flights from London to St. Louis including ideal travel times, pricing trends, and more.

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

To ensure you get the cheapest price possible for a flight from London to St. Louis, you should look to book at least 19 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 to St. Louis?

Currently, February is the cheapest month in which you can book a flight from London to St. Louis (average of £722). Flying from London to St. Louis in December is currently the most expensive (average of £1,033). 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 LON to STL?

It’s typically best to fly out from London to St. Louis in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.

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

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

Rainfall in St. Louis by month

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.

Temperature in St. Louis 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 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).

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Delta, KLM and Finnair from London 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.

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

8,217 reviews

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines

7.6

Good

773 reviews

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very Good

8,217 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What airport do you fly into for flights to St. Louis from London?
Lambert-St Louis (STL) is the airport you will fly into if you book a flight from London to St. Louis. You should not have trouble finding flights to Lambert-St Louis from London; the airport handles an average of 0 inbound flights from London per day. You should also have plenty of airline options to choose from since 7 airlines have flights to the St. Louis airport from London. 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 to St. Louis round-trip?
Our cheapest airline available from London to St. Louis is Finnair. Our recent data shows that you can find tickets from as low as £540 on this airline. Additional options worth looking into are Scandinavian Airlines and Lufthansa, starting at £721 and £734 round-trip. These flights start at 25% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to St. Louis one-way?
To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £451. Aer Lingus flights start at £627 while deals on Lufthansa start at £630 one-way.
What are the most popular routes from London to St. Louis?
When deciding which route to take from London to St. Louis consider London Heathrow - Lambert-St Louis, London Gatwick - Lambert-St Louis or London City - Lambert-St Louis as they are the most popular.
Can I find deals for flights from London to St. Louis that include hotel bookings?
Yes. In addition to deals on London to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to St. Louis.
Can I find deals for business class flights from London to St. Louis?
Yes. Cheapflights offers flight deals from London 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 to St. Louis?
Currently, February is the cheapest month in which you can book a flight from London to St. Louis (average of £722). Flying from London to St. Louis in December is currently the most expensive (average of £1,033). 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

Fly from London to St. Louis on these airlines

Finnair flights from London to Lambert-St Louis

British Airways flights from London to Lambert-St Louis

Virgin Atlantic flights from London to Lambert-St Louis

Alternative routes for London to St. Louis

Complete your trip

St. Louis car hire

Lambert-St Louis Airport car hire

Springfield Capital Airport car hire

Belleville Airport car hire

Marion Williamson County Airport car hire

Kansas City car hire

Springfield car hire

Downtown car hire

Central West End car hire

The Hill car hire

Midtown car hire

Soulard car hire

Direct flights to United States

Top 7 airlines flying from London to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£525	Average£671	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£627	Average£753	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£660	Average£860	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£675	Average£906	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
United Airlines	Cheapest£678	Average£932	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£719	Average£866	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air Canada	Cheapest£770	Average£869	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from London to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from London to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to St. Louis flexibly with Cheapflights today.

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Not ready to book yet? You can track prices for flights from London to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London to St. Louis from £255

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from London to Lambert-St Louis are usually found in January or March, booked 19 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from London to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to St. Louis

Cheapest flights from London to St. LouisExplore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from London to St. Louis within your budget

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

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

Travel insights for flights from London to St. Louis

Get recent, data-driven insights about flights from London to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from London to St. Louis. Price data was last updated on 14 February 2025.

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

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

Find hourly flight availability from London 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 21 February 2025.

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

Use this chart to determine the cheapest time to fly return from London to St. Louis. Price data was last updated on 11 February 2024.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Get a feel of what it's like to fly with Delta, KLM and Finnair from London 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 London 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?

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

What are the cheapest airlines to fly from London to St. Louis one-way?

What are the most popular routes from London to St. Louis?

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

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

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

What is the cheapest month to book a flight from London 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.

Fly from London to St. Louis on these airlines

Choose from the following airlines for your flight from London to St. Louis. Flights are based on user searches made on Cheapflights and were last updated on 21 February 2025.

Top 7 airlines flying from London to St. Louis

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Cheapest flights from London to St. Louis
Explore the most affordable flight options available from London to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.