Cheap flights from London to St Louis

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St. Louis (STL)
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The best prices from London to 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
£491 - £742
STL
Temperature
7 - 32 °C
STL
Rainfall
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

Round-trip from

£491

From London to St Louis

One-way from

£343

One-way flight from London to 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?

Flights from London to St Louis are generally found to be more expensive on Saturday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St Louis.

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

Travellers have found it’s best to book a flight 57 days in advance to save up to 14% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to St Louis 1-2 weeks in advance for as low as £609, or £652 for flights within the next 24 hours.

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 April, May 2021

The best prices found for LON to STL flights in April, May
30 May - 9 Jun
£371pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
30 May - 9 Jun
£372pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
   
2 STOPS
LHR
London Heathrow
17 May - 27 May
£391pp
LHR
London Heathrow
United Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
LHR
London Heathrow

London to St Louis 2021 flight deals

Cheap flights to St Louis from London found for this year
9 Sep - 28 Oct
£336pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
13 Sep - 20 Oct
£337pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
9 Sep - 28 Oct
£338pp
LHR
London Heathrow
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
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
30 Apr - 7 May
£493pp
LHR
London Heathrow
Austrian Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Austrian Airlines
 
1 STOP
LHR
London Heathrow
29 Apr - 7 Jul
£494pp
LHR
London Heathrow
Lufthansa
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Lufthansa
 
1 STOP
LHR
London Heathrow
29 Apr - 21 Jul
£495pp
LHR
London Heathrow
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
LHR
London Heathrow

One-way flights to St Louis from London

The cheapest one-way flights from London to St Louis
10:05 - 15:27
Air Canada
2 stops
35h 22m
LHR - STL
Air Canada
£343
Air Canada
14:20 - 04:11
Multiple Airlines
3 stops
43h 51m
LCY - STL
Multiple Airlines
£346
Kiwi.com
06:00 - 11:52
Lufthansa
1 stop
11h 52m
LHR - STL
Lufthansa
£350
Lufthansa

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

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.

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.

Can I find flights from London to St Louis for under £359 on Cheapflights?

Yes, there are multiple flights from London to St Louis for under £359. The cheapest flight booked recently is on Multiple Airlines for just £336, but on average you can expect to pay £359.

Are there direct flights from London to St Louis for under £359 on Cheapflights?

There are no direct flights from London to St Louis, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from London to St Louis for under £503?

There are currently 12+ open flights from London to St Louis within the next 7 days for less than £503.

Is London weather warmer or cooler than St Louis?

Temperatures around the 32 °Cs can be experienced in July. The weather in St Louis is hotter than in London. Plan for potential changes in flight availability as peak weather approaches in this location.

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

There are many flights that can get you from London to St Louis in 11h 30m. Fly via SWISS, United Airlines, or Lufthansa to get the fastest option. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Flying on Air Canada is currently your cheapest option to St Louis, with prices starting at £339. Additional return tickets that might be worth considering are offered by Lufthansa and Austrian Airlines, with the lowest prices starting at £368 and £370, respectively. Air Canada is priced at 42% lower than the current average price of a flight leaving 3 months from now.

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

£303 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from £323 and £343, respectively.

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 = $1.40
Average temperature for April in St Louis
21.0 °C
Avg rainfall for April in St Louis
104.0 mm

Airports servicing London

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

Airports servicing St. Louis

Top 7 airlines flying from London to 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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