Cheap flights from London to St. Louis

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The best prices from London to Lambert-St Louis are usually found in January or September, booked 56 days in advance, depart on a Tuesday or Friday and return on a Monday

How to find the cheapest flight from
London (LON) to St. Louis (STL)

All the information you need to plan the best LON to STL flight in 2021: compare London to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
LON - STL
Price
£495 - £747
STL
Temperature
7 - 32 °C
STL
Precipitation
57 - 130 mm

Popular in

July

High demand for flights, 21% potential price rise

Cheapest in

January

Best time to find cheap flights, 16% potential price drop

Average price

£505

Average for round-trip flights in September 2021

Round-trip from

£495

From London to Lambert-St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to St. Louis?

Monday is generally a great day to depart. Flying on this day could help you save up to 11%.

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 57 days early can save you up to 14% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from London to St. Louis for as little as £613 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 £656 for flights departing within the next 3 days.

When is the cheapest time to fly from London to St. Louis (LON - 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 at midday, which is usually more expensive.

Cheap flights from London to St. Louis in September, October 2021

The best prices found for LON to STL flights in September, October
14 Oct - 21 Oct
£511pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
14 Oct - 21 Oct
£536pp
LGW
London Gatwick
Multiple airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
LGW
London Gatwick
24 Sep - 14 Oct
£544pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow

London to St. Louis 2021 flight deals

Cheap flights to St. Louis from London found for this year
11 Nov - 15 Nov
£396pp
LGW
London Gatwick
Multiple airlines
     
3 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
LGW
London Gatwick
11 Nov - 15 Nov
£412pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
LHR
London Heathrow
5 Nov - 21 Nov
£459pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow

Last-minute flights from London to St. Louis

Late deals on return flights to St. Louis from London, departing today and this week
24 Sep - 14 Oct
£544pp
LHR
London Heathrow
Finnair
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Finnair
 
1 STOP
LHR
London Heathrow
24 Sep - 14 Oct
£550pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Virgin Atlantic
   
2 STOPS
LHR
London Heathrow
24 Sep - 14 Oct
£779pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Iberia
   
2 STOPS
LHR
London Heathrow

One-way flights to Lambert-St Louis from London

The cheapest one-way flights from London to St. Louis
02:30 - 11:54
Lufthansa
2 stops
15h 24m
LHR - STL
Lufthansa
£655
Lufthansa
09:05 - 10:11
Air Canada
3 stops
31h 06m
LHR - STL
Air Canada
£685
Air Canada
08:20 - 16:22
British Airways
1 stop
14h 02m
LHR - STL
British Airways

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From London to St. Louis

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 8 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 centre.

Which airlines flying from London to Lambert-St Louis have flexible cancellations due to COVID-19?

Finnair, American Airlines, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Are flight prices decreasing from London to St. Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and St. Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from London to St. Louis for under £400 on Cheapflights?

Yes, there are multiple flights from London to St. Louis for under £400. The cheapest flight booked recently is on Multiple Airlines for just £388, but on average you can expect to pay £503.

Are there last-minute flights available from London to St. Louis for under £600?

There are currently 13+ open flights from London to St. Louis within the next 7 days for less than £600.

What are the cheapest airlines flying from London to St. Louis return?

Currently priced at £459, Finnair will fly you from London to St. Louis and back. In addition to Finnair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and American Airlines - these airlines can fly you to your destination from £472 and £600, respectively. Users have found that Finnair is 22% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with Virgin Atlantic, which is currently one of the cheapest options available, starting at £600. Lufthansa flights start at £655 while deals on KLM start at £676 one-way.

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from London?

Information is based on travel restrictions from London to Lambert-St Louis

Most visitors from London will not be allowed to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from London are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to London from St. Louis?

Returning to London from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering London.

Hide COVID Travel Restrictions for St. Louis, MO

Alternative routes for London to St. Louis

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

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from London to St. Louis.
Today's exchange rate
£1 = $1.39
Average temperature for September in St. Louis
28.0 °C
Avg rainfall for September in St. Louis
76.0 mm

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
Luton (LTN)
Southend (SEN)

Airports servicing St. Louis

Top 7 airlines flying from London to Lambert-St Louis

The chart below displays the airlines Cheapflights users travelling from London to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Iberia
£451 £687 No cancel fee 77%
Search Iberia flights
Finnair
£526 £743 No cancel fee 76%
Search Finnair flights
United Airlines
£563 £854 No cancel fee 69%
Search United Airlines flights
American Airlines
£492 £865 No cancel fee 71%
Search American Airlines flights
British Airways
£475 £1,024 No cancel fee 70%
Search British Airways flights
Virgin Atlantic
£849 £1,106 No cancel fee 72%
Search Virgin Atlantic flights
Air Canada
£691 £1,191 No cancel fee 67%
Search Air Canada flights
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