August is by far the best month, wherein you can get cheapest flights for St Louis to London. Meanwhile, August is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
August- During this month the footfall is less so, the flight is gradually inexpensive.
August - is the cheapest month to book round trip flights.
Disclaimer - All the above-mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.
STL
13:27
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
05:55
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
16:15
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
08:30
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
17:45
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
08:50
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
19:05
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
11:40
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
16:45
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
10:45
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
16:15
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
08:30
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
16:45
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
09:45
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
20:01
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
11:30
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
14:40
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
07:50
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
14:40
St Louis
St Louis Lambert International Airport
Wed , 29 Oct 2025
LHR
06:35
London
London Heathrow Airport
Thu, 30 Oct 2025
STL
07:30
St Louis
St Louis Lambert International Airport
Wed , 21 May 2025
LHR
11:50
London
London Heathrow Airport
Thu, 22 May 2025
Flying from St Louis to London has never been easier. Whether you’re planning a short business trip, a weekend getaway, or reconnecting with family and friends, Easemytrip brings you the best deals, seamless booking, and flexible options for this popular flight route. Our platform is built to help travellers like you compare flight prices, explore direct and connecting options, and find the perfect departure time — all within a few clicks.
The air route between St Louis to London is one of the most frequently travelled, offering reliable services from top airlines and excellent connectivity between St Louis Lambert International Airport (STL) and London Heathrow Airport (LHR). You can expect a flight distance of approximately 6741 km, and most direct services cover it in around 20:44.
Let’s take a closer look at everything you need to know before booking your flight from St Louis to London.
Flight Details | Information |
---|---|
Route Distance | 6741 km |
Average Flight Time | 20:44 hrs |
Departure Airport | St Louis Lambert International Airport (STL) |
Arrival Airport | London Heathrow Airport (LHR) |
Cabin Classes Available | Economy Class, Premium Economy, Business Class, First Class |
Direct Flights | NO |
Common Airlines | United Airlines, Delta Airlines, Virgin Atlantic Airways, Lufthansa |
The route is serviced regularly by both full-service and budget airlines, catering to all types of travellers — from those looking for no-frills budget options to those preferring business and first-class comfort. If you're flying for business, early morning weekday flights are a great choice, while leisure travellers often opt for weekend and evening departures.