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

For as low as £540, British Airways can have you in St. Louis from London in 14h 07m. Airlines will cover a distance of 4186 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Our cheapest airline available from London to St. Louis is American Airlines. Our recent data shows that you can find tickets from as low as £88 on this airline. Additional options worth looking into are Scandinavian Airlines and Finnair, starting at £479 and £509 round-trip. These flights start at 88% 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 Delta, which is currently one of the cheapest options available, starting at £376. British Airways flights start at £380 while deals on Virgin Atlantic start at £562 one-way.

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 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 cheapest flights from London to St. Louis?

The cheapest flight price from London to St. Louis is £453. On average you can expect to pay £456. The most popular route, (London Heathrow - Lambert-St Louis), can usually be booked for £514.

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

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

Where are the most common stopover locations when flying from London to St. Louis?

The most popular stopover on flights from London to St. Louis is Chicago.

Where are the least popular stopover locations for London to St. Louis flights?

London to St. Louis flights have a stopover in Philadelphia the least frequently.

What are some popular things to do or see while on a stopover in Chicago?

Magnificent Mile, Grant Park, and River North are currently the most popular points of interest in Chicago at the moment. Magnificent Mile, Grant Park, and River North are located about 15.5 mi, 16.2 mi, and 15.0 mi, respectively from Chicago O'Hare Intl. Travellers in need of a car in Chicago can hire one for about £37 per day.

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 10 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.

£248+ Cheap Flights from London to St. Louis

Cheapflights Tip: The best prices from London to Lambert-St Louis are usually found in March or January, booked 13 days in advance, depart on a Saturday or Monday and return on a Wednesday

Find flight deals from London to St. Louis

Enter your travel dates to find the best prices.

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 17 October 2025.

Mon 17/1117:35LHR - STL

2 stops28h 32mVirgin Atlantic

Mon 1/1219:02STL - LHR

1 stop31h 58mVirgin Atlantic

Deal found 16/10£536

Mon 17/1108:20LHR - STL

1 stop14h 07mBritish Airways

Mon 1/1214:08STL - LHR

1 stop11h 12mBritish Airways

Deal found 16/10£540

Fri 7/1114:00LGW - STL

1 stop31h 38mMultiple Airlines

Thu 13/1111:07STL - LGW

2 stops36h 53mMultiple Airlines

Deal found 16/10£545

Thu 20/1114:45LHR - STL

1 stop15h 20mBritish Airways

Mon 8/1211:50STL - LHR

1 stop12h 40mBritish Airways

Deal found 16/10£553

Mon 17/1106:30LHR - STL

2 stops16h 39mDelta

Mon 1/1218:09STL - LHR

2 stops13h 36mDelta

Deal found 16/10£555

Wed 5/1110:45LHR - STL

1 stop13h 17mVirgin Atlantic

Wed 19/1110:45STL - LHR

1 stop16h 00mVirgin Atlantic

Deal found 16/10£561

Thu 20/1108:55LHR - STL

1 stop15h 02mVirgin Atlantic

Mon 8/1211:40STL - LHR

2 stops17h 10mVirgin Atlantic

Deal found 16/10£564

Sun 30/1120:35LHR - STL

2 stops32h 29mMultiple Airlines

Sun 7/1218:53STL - LHR

1 stop30h 27mMultiple Airlines

Deal found 16/10£565

Thu 20/1106:30LHR - STL

2 stops15h 37mDelta

Mon 8/1211:40STL - LHR

2 stops15h 05mDelta

Deal found 16/10£573

Sat 1/1114:10LHR - STL

1 stop12h 58mBritish Airways

Thu 6/1118:45STL - LHR

1 stop11h 15mBritish Airways

Deal found 16/10£596

Sat 15/1108:55LHR - STL

1 stop13h 12mVirgin Atlantic

Thu 20/1109:04STL - LHR

1 stop16h 01mVirgin Atlantic

Deal found 16/10£597

Mon 10/1114:00LGW - STL

2 stops25h 07mMultiple Airlines

Sun 14/1215:30STL - LGW

1 stop12h 30mMultiple Airlines

Deal found 16/10£597

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 17 October 2025.

Mon 17/1108:20LHR - STL

1 stop14h 07mBritish Airways

Mon 1/1214:08STL - LHR

1 stop11h 12mBritish Airways

Deal found 16/10£540

Thu 5/312:30LGW - STL

2 stops49h 36mAmerican Airlines

Mon 9/319:05STL - LGW

2 stops56h 55mAmerican Airlines

Deal found 15/10£544

Fri 7/1114:00LGW - STL

1 stop31h 38mMultiple Airlines

Thu 13/1111:07STL - LGW

2 stops36h 53mMultiple Airlines

Deal found 16/10£545

Thu 20/1106:30LHR - STL

2 stops15h 37mDelta

Mon 8/1211:40STL - LHR

2 stops15h 05mDelta

Deal found 16/10£573

Tue 13/111:45LHR - STL

2 stops14h 54mKLM

Fri 23/111:51STL - LHR

2 stops12h 59mKLM

Deal found 16/10£579

Thu 5/311:45LHR - STL

2 stops14h 54mVirgin Atlantic

Mon 9/315:50STL - LHR

1 stop10h 15mVirgin Atlantic

Deal found 16/10£581

Tue 13/106:45LHR - STL

2 stops21h 59mBritish Airways

Fri 23/111:55STL - LHR

1 stop12h 55mBritish Airways

Deal found 16/10£567

Thu 5/313:10LHR - STL

1 stop13h 08mAmerican Airlines

Mon 9/314:48STL - LHR

1 stop12h 02mAmerican Airlines

Deal found 16/10£578

Mon 10/1114:00LGW - STL

2 stops25h 07mMultiple Airlines

Sun 14/1215:30STL - LGW

1 stop12h 30mMultiple Airlines

Deal found 16/10£597

Mon 10/1111:45LHR - STL

2 stops15h 02mDelta

Sun 14/1210:45STL - LHR

2 stops17h 30mDelta

Deal found 16/10£616

Thu 27/1110:00LCY - STL

2 stops17h 58mVirgin Atlantic

Tue 2/1211:40STL - LCY

2 stops13h 35mVirgin Atlantic

Deal found 15/10£616

Mon 30/311:10STN - STL

2 stops33h 08mTurkish Airlines

Mon 27/417:18STL - STN

2 stops34h 57mTurkish Airlines

Deal found 15/10£1,258

Thu 25/1211:55LHR - STL

1 stop17h 01mBritish Airways

Sun 18/117:20STL - LHR

1 stop12h 20mBritish Airways

Deal found 15/10£615

Tue 11/1111:45LHR - STL

2 stops15h 01mDelta

Sun 14/1209:30STL - LHR

2 stops17h 15mDelta

Deal found 15/10£616

Thu 27/1114:00LGW - STL

1 stop15h 57mMultiple Airlines

Tue 2/1215:30STL - LGW

2 stops32h 30mMultiple Airlines

Deal found 15/10£627

Mon 24/1108:40LCY - STL

2 stops19h 18mVirgin Atlantic

Mon 1/1219:02STL - LCY

2 stops15h 33mVirgin Atlantic

Deal found 15/10£649

Sat 1/1108:40LHR - STL

2 stops16h 53mDelta

Thu 6/1111:36STL - LHR

2 stops15h 09mDelta

Deal found 16/10£616

Sat 15/1108:40LCY - STL

2 stops18h 20mBritish Airways

Thu 20/1110:49STL - LCY

2 stops21h 01mBritish Airways

Deal found 16/10£655

Thu 25/1208:40LHR - STL

2 stops18h 01mDelta

Sun 18/110:00STL - LHR

1 stop14h 25mDelta

Deal found 15/10£617

Thu 22/114:00LGW - STL

1 stop14h 33mMultiple Airlines

Sun 25/115:50STL - LGW

2 stops21h 55mMultiple Airlines

Deal found 15/10£696

Sat 8/1108:40LCY - STL

2 stops18h 20mBritish Airways

Sat 22/1118:45STL - LCY

2 stops37h 50mBritish Airways

Deal found 15/10£655

Thu 22/107:50LCY - STL

2 stops16h 44mMultiple Airlines

Sun 25/115:50STL - LCY

1 stop11h 25mMultiple Airlines

Deal found 15/10£717

Fri 14/1114:00LGW - STL

1 stop31h 38mMultiple Airlines

Fri 21/1106:15STL - LGW

2 stops29h 55mMultiple Airlines

Deal found 15/10£735

Fri 14/1118:55LCY - STL

2 stops32h 05mBritish Airways

Fri 21/1118:45STL - LCY

2 stops41h 45mBritish Airways

Deal found 15/10£757

Tue 11/1109:00LGW - STL

1 stop39h 00mMultiple Airlines

Sun 14/1215:30STL - LGW

1 stop12h 30mMultiple Airlines

Deal found 15/10£775

Sun 30/1118:05LCY - STL

2 stops31h 22mMultiple Airlines

Sun 7/1214:54STL - LCY

2 stops35h 56mMultiple Airlines

Deal found 16/10£781

Fri 7/1119:20LCY - STL

2 stops26h 26mMultiple Airlines

Thu 13/1113:10STL - LCY

2 stops14h 10mMultiple Airlines

Deal found 16/10£831

Thu 4/1209:40LCY - STL

2 stops18h 18mMultiple Airlines

Sun 7/1212:55STL - LCY

2 stops17h 55mMultiple Airlines

Deal found 16/10£844

Sat 29/1119:40LGW - STL

2 stops29h 50mMultiple Airlines

Sat 6/1213:20STL - LGW

2 stops39h 30mMultiple Airlines

Deal found 15/10£888

Mon 10/1119:10LCY - STL

2 stops26h 37mMultiple Airlines

Sun 14/1210:00STL - LCY

2 stops17h 15mMultiple Airlines

Deal found 16/10£919

Last-minute flights from London to St. Louis
Discover last-minute flight deals from London to St. Louis. Data last updated 17 October 2025 and is based on user searches.

Sat 1/1114:10LHR - STL

1 stop12h 58mBritish Airways

Thu 6/1118:45STL - LHR

1 stop11h 15mBritish Airways

Deal found 16/10£596

Wed 5/1110:45LHR - STL

1 stop13h 17mVirgin Atlantic

Wed 19/1110:45STL - LHR

1 stop16h 00mVirgin Atlantic

Deal found 16/10£561

Fri 7/1114:00LGW - STL

1 stop31h 38mMultiple Airlines

Thu 13/1111:07STL - LGW

2 stops36h 53mMultiple Airlines

Deal found 16/10£545

Mon 10/1114:00LGW - STL

2 stops25h 07mMultiple Airlines

Sun 14/1215:30STL - LGW

1 stop12h 30mMultiple Airlines

Deal found 16/10£597

Sat 15/1108:55LHR - STL

1 stop13h 12mVirgin Atlantic

Thu 20/1109:04STL - LHR

1 stop16h 01mVirgin Atlantic

Deal found 16/10£597

Mon 17/1117:35LHR - STL

2 stops28h 32mVirgin Atlantic

Mon 1/1219:02STL - LHR

1 stop31h 58mVirgin Atlantic

Deal found 16/10£536

Mon 17/1108:20LHR - STL

1 stop14h 07mBritish Airways

Mon 1/1214:08STL - LHR

1 stop11h 12mBritish Airways

Deal found 16/10£540

Mon 17/1106:30LHR - STL

2 stops16h 39mDelta

Mon 1/1218:09STL - LHR

2 stops13h 36mDelta

Deal found 16/10£555

Thu 20/1114:45LHR - STL

1 stop15h 20mBritish Airways

Mon 8/1211:50STL - LHR

1 stop12h 40mBritish Airways

Deal found 16/10£553

Thu 20/1108:55LHR - STL

1 stop15h 02mVirgin Atlantic

Mon 8/1211:40STL - LHR

2 stops17h 10mVirgin Atlantic

Deal found 16/10£564

Thu 20/1106:30LHR - STL

2 stops15h 37mDelta

Mon 8/1211:40STL - LHR

2 stops15h 05mDelta

Deal found 16/10£573

Sun 30/1120:35LHR - STL

2 stops32h 29mMultiple Airlines

Sun 7/1218:53STL - LHR

1 stop30h 27mMultiple Airlines

Deal found 16/10£565

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 17 October 2025.

Thu 13/1114:00LGW - STL

1 stop26h 20mMultiple Airlines

Deal found 15/10£248

Thu 13/1121:55LTN - STL

3 stops41h 12mMultiple Airlines

Deal found 15/10£300

Fri 7/1114:00LGW - STL

2 stops25h 07mMultiple Airlines

Deal found 16/10£301

Mon 10/1114:00LGW - STL

3 stops49h 07mMultiple Airlines

Deal found 15/10£305

Sun 7/1209:15LTN - STL

3 stops30h 37mMultiple Airlines

Deal found 15/10£307

Sun 7/1213:00LGW - STL

2 stops26h 52mMultiple Airlines

Deal found 15/10£325

Sat 15/1108:30LGW - STL

3 stops31h 42mMultiple Airlines

Deal found 15/10£340

Wed 15/413:30LHR - STL

1 stop12h 33mMultiple Airlines

Deal found 16/10£367

Wed 15/406:30LHR - STL

2 stops16h 19mDelta

Deal found 16/10£376

Fri 24/1010:55LGW - STL

2 stops28h 12mMultiple Airlines

Deal found 14/10£377

Sat 14/307:30LHR - STL

2 stops19h 18mBritish Airways

Deal found 15/10£380

Wed 15/407:45LCY - STL

2 stops18h 46mDelta

Deal found 16/10£383

Cheap flight deals from London to St. Louis

Round-trip from	£536
One-way from	£248
Popular in	December
Cheapest in	March
Average price	£748
Good round-trip deal	£456 or less

Virgin Atlantic
17/11-1/12
3 total stops
60h 30m total
London to St. Louis

Search Deals

13/11
1 total stop
26h 20m total
London to St. Louis

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (£31 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£23 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 (LON) to Lambert-St Louis.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Mon 17/11

08:20-16:27

1 stop14h 07m

Lambert-St Louis

Mon 1/12

14:08-07:20

1 stop11h 12m

£540

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Thu 5/3

12:30-08:06

2 stops49h 36m

Lambert-St Louis

Mon 9/3

19:05-09:00

2 stops56h 55m

£544

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Fri 7/11

14:00-15:38

1 stop31h 38m

Lambert-St Louis

Thu 13/11

11:07-06:00

2 stops36h 53m

£545

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 13/1

06:45-22:44

2 stops21h 59m

Lambert-St Louis

Fri 23/1

11:55-06:50

1 stop12h 55m

£567

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 20/11

06:30-16:07

2 stops15h 37m

Lambert-St Louis

Mon 8/12

11:40-08:45

2 stops15h 05m

£573

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/3

13:10-20:18

1 stop13h 08m

Lambert-St Louis

Mon 9/3

14:48-07:50

1 stop12h 02m

£578

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Tue 13/1

11:45-20:39

2 stops14h 54m

Lambert-St Louis

Fri 23/1

11:51-06:50

2 stops12h 59m

£579

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 5/3

11:45-20:39

2 stops14h 54m

Lambert-St Louis

Mon 9/3

15:50-07:05

1 stop10h 15m

£581

LondonSt. Louis

LGW - STL

LGWSTL

London Gatwick

Mon 10/11

14:00-09:07

2 stops25h 07m

Lambert-St Louis

Sun 14/12

15:30-10:00

1 stop12h 30m

£597

LondonSt. Louis

LHR - STL

LHRSTL

London Heathrow

Thu 25/12

11:55-22:56

1 stop17h 01m

Lambert-St Louis

Sun 18/1

17:20-11:40

1 stop12h 20m

£615

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 60 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.

Cheapflights Insights

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

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 13 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, September is the cheapest month in which you can book a flight from London to St. Louis (average of £406). Flying from London to St. Louis in July is currently the most expensive (average of £616). 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 36% on the flight price compared to flying at midday, 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 Wednesday at midday when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

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

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £374.

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

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

Reviews of airlines servicing St. Louis

See what other customers who have flown with Finnair, Air Canada, andIberia from London to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,332 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

1,332 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Air Canada

7.1

Good

10,305 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Iberia

7.0

Good

2,992 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,494 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,456 reviews

Finnair

7.6

Good

1,332 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?
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 10 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.
How long is the flight from London to St. Louis?
For as low as £540, British Airways can have you in St. Louis from London in 14h 07m. Airlines will cover a distance of 4186 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to St. Louis round-trip?
Our cheapest airline available from London to St. Louis is American Airlines. Our recent data shows that you can find tickets from as low as £88 on this airline. Additional options worth looking into are Scandinavian Airlines and Finnair, starting at £479 and £509 round-trip. These flights start at 88% 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 Delta, which is currently one of the cheapest options available, starting at £376. British Airways flights start at £380 while deals on Virgin Atlantic start at £562 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 cheapest flights from London to St. Louis?
The cheapest flight price from London to St. Louis is £453. On average you can expect to pay £456. The most popular route, (London Heathrow - Lambert-St Louis), can usually be booked for £514.
Where are the most common stopover locations when flying from London to St. Louis?
The most popular stopover on flights from London to St. Louis is Chicago.
What are some popular things to do or see while on a stopover in Chicago?
Magnificent Mile, Grant Park, and River North are currently the most popular points of interest in Chicago at the moment. Magnificent Mile, Grant Park, and River North are located about 15.5 mi, 16.2 mi, and 15.0 mi, respectively from Chicago O'Hare Intl. Travellers in need of a car in Chicago can hire one for about £37 per day.
Where are the least popular stopover locations for London to St. Louis flights?
London to St. Louis flights have a stopover in Philadelphia the least frequently.
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, September is the cheapest month in which you can book a flight from London to St. Louis (average of £406). Flying from London to St. Louis in July is currently the most expensive (average of £616). 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

Midtown car hire

Soulard car hire

Direct flights to United States

Top 10 airlines flying from London to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest£88	Average£765	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Scandinavian Airlines	Cheapest£479	Average£619	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Finnair	Cheapest£509	Average£698	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Air Canada	Cheapest£604	Average£755	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest£625	Average£764	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£625	Average£721	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£633	Average£812	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£691	Average£808	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	Cheapest£701	Average£857	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£717	Average£880	FlexibilityNo cancel fee	On-time75%	Search KLM flights

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Cheap flights from London to St. Louis from £248

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

Cheapflights Tip: The best prices from London to Lambert-St Louis are usually found in March or January, booked 13 days in advance, depart on a Saturday or Monday and return on a Wednesday

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 17 October 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 17 October 2025.

Cheap flight deals from London to St. Louis

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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.

Cheapflights Insights

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

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 10 October 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 17 October 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 16 December 2024.

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

Share of one-stop return flights from London to St. Louis chosen by Cheapflights users in the past 12 months, using the same stopover each way.

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

Average return fare for one-stop flights from London to St. Louis, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

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

Shortest average travel time for one-stop one-way flights from London to St. Louis, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

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

Average stopover duration for one-stop one-way flights from London to St. Louis, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Finnair, Air Canada, andIberia from London to St. Louis have to say. You can also see how each airline compares 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?

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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?

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

Where are the most common stopover locations when flying from London to St. Louis?

What are some popular things to do or see while on a stopover in Chicago?

Where are the least popular stopover locations for London to St. Louis flights?

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

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

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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 17 October 2025.

Top 10 airlines flying from London to St. Louis

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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?

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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 17 October 2025.