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 £606 on this airline. Additional options worth looking into are British Airways and Lufthansa, starting at £658 and £727 round-trip. These flights start at 15% 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 £403. TAP AIR PORTUGAL flights start at £665 while deals on British Airways start at £686 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 11 days early can save you up to 20% on average compared to booking a flight this week. If booking 11 days before your flight isn’t an option for you, users have found flights from London to St. Louis for as little as £575 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 £1,091 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 £716 on average during January, but can be found for as low as £500.

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.

£278+ Flights from London to St. Louis

The best prices from London to Lambert-St Louis are usually found in January or February, booked 80 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	£598
One-way from	£278
Popular in	December
Cheapest in	January
Average price	£1,020

26/1-2/2
3 total stops
35h 09m total
London to St. Louis

Search Deals

1/3
1 total stop
15h 43m total
London to St. Louis

Search Deals

High demand for flights, 4% potential price rise

Search Deals

Best time to find cheap flights, 4% potential price drop

Search Deals

Average for round-trip flights in December 2024

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 30 December 2024.

Mon 30/1211:55LGW - STL

3 stops29h 50mMultiple Airlines

Thu 2/109:20STL - LGW

3 stops26h 30mMultiple Airlines

Deal found 29/12£1,292

Mon 30/1208:00LHR - STL

1 stop18h 11mLufthansa

Thu 2/117:30STL - LHR

1 stop11h 45mLufthansa

Deal found 29/12£1,893

Mon 30/1213:35LHR - STL

1 stop14h 10mMultiple Airlines

Thu 2/111:30STL - LHR

2 stops13h 00mMultiple Airlines

Deal found 29/12£2,017

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 30 December 2024.

Sun 26/110:50LHR - STL

2 stops18h 41mMultiple Airlines

Sun 2/208:22STL - LHR

1 stop16h 28mMultiple Airlines

Deal found 29/12£598

Sat 18/110:05LHR - STL

1 stop19h 41mFinnair

Fri 28/216:33STL - LHR

1 stop13h 47mFinnair

Deal found 29/12£606

Sun 26/110:15LHR - STL

1 stop16h 26mBritish Airways

Sun 2/218:00STL - LHR

1 stop11h 30mBritish Airways

Deal found 29/12£658

Wed 22/106:30LHR - STL

1 stop13h 25mLufthansa

Thu 20/213:03STL - LHR

1 stop12h 52mLufthansa

Deal found 30/12£727

Wed 22/106:30LHR - STL

1 stop13h 25mUnited Airlines

Thu 20/208:05STL - LHR

2 stops17h 05mUnited Airlines

Deal found 30/12£730

Sun 26/112:05LHR - STL

2 stops41h 25mAustrian Airlines

Sun 2/211:28STL - LHR

1 stop27h 07mAustrian Airlines

Deal found 30/12£732

Mon 13/116:10LHR - STL

1 stop32h 35mVirgin Atlantic

Sun 26/119:07STL - LHR

1 stop29h 13mVirgin Atlantic

Deal found 30/12£746

Mon 13/114:30LHR - STL

1 stop30h 36mAir Canada

Sun 26/115:50STL - LHR

2 stops33h 20mAir Canada

Deal found 30/12£781

Mon 13/110:05LHR - STL

1 stop13h 17mAmerican Airlines

Sun 26/111:38STL - LHR

1 stop12h 42mAmerican Airlines

Deal found 30/12£797

Sun 23/316:20LHR - STL

2 stops33h 28mIberia

Sun 20/419:25STL - LHR

1 stop29h 55mIberia

Deal found 30/12£901

Sun 26/105:50LGW - STL

2 stops39h 48mTurkish Airlines

Sun 2/217:30STL - LGW

2 stops22h 00mTurkish Airlines

Deal found 29/12£1,053

Mon 13/114:00LGW - STL

1 stop15h 27mMultiple Airlines

Sun 26/108:22STL - LGW

2 stops20h 33mMultiple Airlines

Deal found 30/12£627

Last-minute flights from London to St. Louis
Discover last-minute flight deals from London to St. Louis. Data last updated 30 December 2024 and is based on user searches.

Sat 4/106:40LHR - STL

2 stops23h 00mScandinavian Airlines

Fri 10/114:00STL - LHR

2 stops20h 00mScandinavian Airlines

Deal found 30/12£1,629

Sat 4/114:00LGW - STL

1 stop15h 28mMultiple Airlines

Fri 10/117:05STL - LGW

1 stop34h 55mMultiple Airlines

Deal found 29/12£1,637

Sun 5/111:55LHR - STL

1 stop12h 03mBritish Airways

Sat 11/117:12STL - LHR

1 stop31h 08mBritish Airways

Deal found 29/12£1,136

Sun 5/109:30LHR - STL

2 stops35h 36mMultiple Airlines

Sun 12/115:50STL - LHR

1 stop32h 40mMultiple Airlines

Deal found 30/12£1,208

Sun 5/114:30LHR - STL

1 stop30h 36mLufthansa

Sat 11/116:36STL - LHR

2 stops35h 34mLufthansa

Deal found 29/12£1,355

Sun 5/112:35LHR - STL

1 stop17h 16mFinnair

Sat 11/107:18STL - LHR

1 stop17h 42mFinnair

Deal found 30/12£1,404

Sun 5/112:20LHR - STL

1 stop15h 15mKLM

Fri 10/117:00STL - LHR

1 stop11h 35mKLM

Deal found 30/12£2,350

Sun 5/110:15LGW - STL

2 stops35h 32mTurkish Airlines

Fri 10/117:30STL - LGW

2 stops40h 30mTurkish Airlines

Deal found 30/12£2,352

Sun 5/113:45LCY - STL

2 stops15h 55mMultiple Airlines

Fri 10/106:00STL - LCY

2 stops20h 10mMultiple Airlines

Deal found 29/12£2,495

Mon 6/114:30LHR - STL

1 stop30h 36mUnited Airlines

Tue 28/113:02STL - LHR

2 stops13h 23mUnited Airlines

Deal found 30/12£748

Mon 6/114:30LHR - STL

1 stop30h 36mAir Canada

Sun 12/115:50STL - LHR

1 stop32h 40mAir Canada

Deal found 30/12£761

Mon 6/116:10LHR - STL

1 stop25h 37mDelta

Sun 12/111:04STL - LHR

2 stops14h 51mDelta

Deal found 30/12£955

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 30 December 2024.

Sat 1/314:00LGW - STL

1 stop15h 43mMultiple Airlines

Deal found 30/12£278

Sat 18/114:50LHR - STL

3 stops48h 26mMultiple Airlines

Deal found 29/12£385

Wed 19/214:50LHR - STL

2 stops37h 27mWestJet

Deal found 30/12£403

Sat 22/319:55LHR - STL

2 stops47h 28mTAP AIR PORTUGAL

Deal found 30/12£665

Sat 22/314:10LHR - STL

1 stop32h 49mBritish Airways

Deal found 30/12£686

Sun 5/114:10STN - STL

2 stops55h 02mMultiple Airlines

Deal found 29/12£737

Sun 5/109:00LTN - STL

3 stops44h 40mMultiple Airlines

Deal found 29/12£754

Sat 1/319:30LHR - STL

1 stop24h 25mLufthansa

Deal found 30/12£763

Sun 23/314:10LHR - STL

1 stop12h 30mIberia

Deal found 30/12£816

Sat 1/311:25LCY - STL

2 stops16h 49mAer Lingus

Deal found 30/12£834

Tue 25/216:55LGW - STL

2 stops27h 41mTurkish Airlines

Deal found 29/12£854

Sat 22/308:40LCY - STL

2 stops17h 01mBritish Airways

Deal found 30/12£1,029

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

Sun 26/1

10:50-23:31

2 stops18h 41m

Lambert-St Louis

Sun 2/2

08:22-06:50

1 stop16h 28m

£598

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sat 18/1

10:05-23:46

1 stop19h 41m

Lambert-St Louis

Fri 28/2

16:33-12:20

1 stop13h 47m

£606

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 13/1

14:00-23:27

1 stop15h 27m

Lambert-St Louis

Sun 26/1

08:22-10:55

2 stops20h 33m

£627

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 26/1

10:15-20:41

1 stop16h 26m

Lambert-St Louis

Sun 2/2

18:00-11:30

1 stop11h 30m

£658

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 22/1

06:30-13:55

1 stop13h 25m

Lambert-St Louis

Thu 20/2

13:03-07:55

1 stop12h 52m

£727

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Wed 22/1

06:30-13:55

1 stop13h 25m

Lambert-St Louis

Thu 20/2

08:05-07:10

2 stops17h 05m

£730

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Sun 26/1

12:05-23:30

2 stops41h 25m

Lambert-St Louis

Sun 2/2

11:28-20:35

1 stop27h 07m

£732

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 13/1

16:10-18:45

1 stop32h 35m

Lambert-St Louis

Sun 26/1

19:07-06:20

1 stop29h 13m

£746

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 11/2

09:15-15:06

2 stops35h 51m

Lambert-St Louis

Tue 18/2

15:50-12:50

2 stops15h 00m

£760

LondonSt. Louis

LCY - STL

LCYSTL

London City

Tue 11/2

18:15-13:55

1 stop25h 40m

Lambert-St Louis

Tue 18/2

13:03-09:25

2 stops14h 22m

£761

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 30 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 80 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 British Airways, Lufthansa and United Airlines 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.

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

Finnair

7.7

Good

1,282 reviews

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

Austrian Airlines

7.6

Good

788 reviews

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

Virgin Atlantic

7.5

Good

664 reviews

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

United Airlines

7.4

Good

8,985 reviews

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

Turkish Airlines

7.3

Good

3,899 reviews

Finnair

7.7

Good

1,282 reviews

Check prices

Reviews

1 / 10

Flight attendants were amazing. You aren’t lacking for anything when you fly business class.

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 £606 on this airline. Additional options worth looking into are British Airways and Lufthansa, starting at £658 and £727 round-trip. These flights start at 15% 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 £403. TAP AIR PORTUGAL flights start at £665 while deals on British Airways start at £686 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

Central West End car hire

Soulard car hire

Midtown car hire

Direct flights to United States

Top 7 airlines flying from London to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest£464	Average£859	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest£496	Average£900	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£505	Average£665	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£563	Average£774	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£643	Average£862	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£677	Average£922	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Lufthansa	Cheapest£723	Average£857	FlexibilityNo cancel fee	On-time76%	Search Lufthansa 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.

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

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to St. Louis from £278

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. 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 February, booked 80 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 30 December 2024.

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 30 December 2024.

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 27 December 2024.

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 30 December 2024.

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 British Airways, Lufthansa and United Airlines 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 30 December 2024.

Top 7 airlines flying from London to St. Louis

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 30 December 2024.