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Cheap flights from St Louis (STL) to London (LON)

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The best prices from St Louis to London are usually found in April or January, booked 53 days in advance, depart on a Tuesday or Wednesday and return on a Friday

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

STL - LON
Price
$675 - $1217
LON
Temperature
48.2 - 73.4 °F
LON
Rainfall
1.4 - 2.8 inches
Popular in December High demand for flights, 29% potential price rise
Cheapest in April Best time to find cheap flights, 22% potential price drop
Round-trip from $675 From St Louis to London
One-way from $591 One-way flight from St Louis to London
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 round-trip from St Louis to London?

Thursday flights are found to be more expensive to fly from St Louis to London. 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 London.

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

To save up to 38% on this flight, we recommend booking at least 51 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St Louis to London from $813 1-2 weeks out and tickets from $886 for flights departing within the next 72 hours.

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

February can be a great time to fly to London from St Louis with a flight ticket averaging about $634. Cheapflights users have found deals in the month of February for as cheap as $394. The most expensive prices can be found in the month of June.

Cheap flights from St Louis to London in July, August 2020

The best prices found for STL to LON flights for July, August
7 Jul - 16 Jul
$860pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
6 Jul - 1 Sep
$896pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
20 Jul - 31 Jul
$970pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis

St Louis to London 2020 flight deals

Cheap flights to London from St Louis found for this year
15 Sep - 29 Sep
$593pp
STL
Lambert-St Louis
Multiple Airlines
     
3 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
     
3 STOPS
STL
Lambert-St Louis
4 Nov - 20 Nov
$660pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
4 Nov - 20 Nov
$664pp
STL
Lambert-St Louis
Air India
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Air India
 
1 STOP
STL
Lambert-St Louis

One-way flights to London from St Louis

The cheapest one-way flights from St Louis to London
8:00 am - 4:10 am
Gulf Air
1 Stop
14h 10m
STL - LHR
Gulf Air
$591
Ovago
11:30 am - 12:00 pm
SAS
2 Stops
18h 30m
STL - LHR
SAS
$608
Ovago
7:30 am - 5:05 am
Aer Lingus
2 Stops
15h 35m
STL - LHR
Aer Lingus
$649
Fareboom

Related info for your journey

Useful info, stats and facts about St Louis to London flights.

Flight FAQs

From St Louis to London

Are flight prices decreasing from St Louis to London 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 St Louis and London 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 St Louis to London for under $600 on Cheapflights?

Yes, there are multiple flights from St Louis to London for under $600. The cheapest flight booked recently is on Multiple Airlines for just $593, but on average you can expect to pay $763.

Are there nonstop flights from St Louis to London for under $600 on Cheapflights?

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

Is St Louis weather warmer or cooler than London?

Our data indicates that the weather will be 90 °F on average in the month of July. The temperature in London is typically colder than in St Louis. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

Alternative routes for St Louis to London

Destination information for London

Things to know before you go. Useful info for your trip from St Louis to London
Today's exchange rate
$1 = £0.81
Average temperature for July in London
73.4 °F
Avg rainfall for July in London
1.6 ″

Airports servicing St. Louis

Airports servicing London

Heathrow (LHR)
Luton (LTN)
Stansted (STN)
City (LCY)
Southend (SEN)