April is by far the best month, wherein you can get cheapest flights for St Louis to London. Meanwhile, 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.
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.

St Louis
13:11
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
13:05
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
08:50
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
13:11
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
16:43
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
11:20
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
11:43
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
13:11
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
13:11
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
09:40
St Louis
St Louis Lambert International Airport
Sun , 26 Apr 2026

London
06:25
London
London Heathrow Airport
Mon, 27 Apr 2026

St Louis
14:29
St Louis
St Louis Lambert International Airport
Wed , 22 Apr 2026

London
06:50
London
London Heathrow Airport
Thu, 23 Apr 2026

St Louis
18:11
St Louis
St Louis Lambert International Airport
Wed , 22 Apr 2026

London
12:10
London
London Heathrow Airport
Thu, 23 Apr 2026










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 18:18.
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 | 18:18 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 | Delta Airlines, Virgin Atlantic Airways, Air France, KLM Royal Dutch Airlines |
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.