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Uncover the best deals on St Louis to London flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest STL - LHR Flights
Useful information for finding best airline tickets from Lambert St Louis International to London Heathrow on your next trip.
Cheapest Round Trip Flight
$1331
Delta Airlines
• 1 stop
• 25h 36m
Aug 30 – Sep 06
The cheapest round trip flight from St Louis to London (STL-LHR-STL) is currently $1331
Cheapest Direct Flight
$1262
British Airways
• nonstop
• 13h 20m
Aug 30
The cheapest nonstop flight from St Louis to London (STL-LHR) is currently $1262
Fastest Flight
13h 20m
The fastest nonstop flight from St Louis to London (STL-LHR) takes 13h 20m
Top Airlines Flying from St Louis to London
Latest Flight Deals from St Louis (STL) to London (LHR)
Compare and book low fare round-trip air tickets from St Louis to London. Ideal for travelers with confirmed return itineraries.
Aug 30 - Sep 06, Economy
St Louis → London
25h 36m
3:39 PM - 1:15 PM • 1 stop
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
23h 57m
10:33 AM - 7:10 AM • 1 stop
St Louis → London
25h 47m
6:30 AM - 4:17 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
18h 53m
12:52 PM - 6:25 AM • 1 stop
St Louis → London
30h 2m
8:40 AM - 8:42 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
25h 30m
9:15 AM - 6:45 AM • 2 stops
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
27h 7m
8:48 AM - 7:15 AM • 2 stops
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Flying to London soon? We've surfaced some of the most affordable last-minute flights from St Louis to London, ideal for urgent plans or spontaneous trips.
Aug 30 - Sep 06, Economy
St Louis → London
25h 36m
3:39 PM - 1:15 PM • 1 stop
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
23h 57m
10:33 AM - 7:10 AM • 1 stop
St Louis → London
25h 47m
6:30 AM - 4:17 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
18h 53m
12:52 PM - 6:25 AM • 1 stop
St Louis → London
30h 2m
8:40 AM - 8:42 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
25h 30m
9:15 AM - 6:45 AM • 2 stops
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Aug 30 - Sep 06, Economy
St Louis → London
27h 7m
8:48 AM - 7:15 AM • 2 stops
St Louis → London
23h 37m
6:30 AM - 2:47 PM • 2 stops
Delta Airlines
Looking for the fastest way to London? These direct flight options from STL to LHR offer both convenience and value—no layovers, just straight to your destination.
Aug 30 - Sep 06, Economy
St Louis → London
13h 20m
9:40 PM - 11:40 AM • nonstop
St Louis → London
15h 5m
4:25 PM - 7:30 PM • nonstop
British Airways
Aug 30 - Sep 06, Economy
St Louis → London
13h 20m
9:40 PM - 11:40 AM • nonstop
St Louis → London
15h 5m
4:25 PM - 7:30 PM • nonstop
American Airlines
Aug 30 - Sep 06, Economy
St Louis → London
13h 20m
9:40 PM - 11:40 AM • nonstop
St Louis → London
15h 5m
4:25 PM - 7:30 PM • nonstop
Iberia Airlines
Aug 30 - Sep 06, Economy
St Louis → London
13h 20m
9:40 PM - 11:40 AM • nonstop
St Louis → London
15h 5m
4:25 PM - 7:30 PM • nonstop
Aer Lingus
FAQs on St Louis to London Flights
What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to LHR?
The most popular airline flying from St Louis to London are
Can I fly from STL to LHR non-stop?
Yes, you can fly STL to LHR non-stop on
Which airlines fly nonstop between St Louis and London?
The non-stop flights between St Louis and London are .
What’s the earliest departure time from STL to LHR Airport?
The earliest flight leaves STL at 8:48 am and lands in LHR - London Heathrow
What are the airports in London?
LHR
Can I make changes to my St Louis to London flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from STL to LHR?
Read the fare rules of the St Louis to London air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from St Louis and London?
operate flights between St Louis and London
How long does a flight from St Louis to London take?
It takes approximately 9 hour to fly non-stop from STL to LHR, which is 4200.25 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to London (LHR) ?
In the past couple of days, the cheapest tickets to LHR from STL were found on DL : USD 1391
Do I need a passport to fly between STL and LHR?
Yes
What’s the latest departure time from STL to LHR ?
The last flight leaves STL at 9:40 pm
St Louis (STL) to London (LHR): Airport Information
| Origin Airport | Lambert St Louis International , St Louis, US |
| Destination Airport | London Heathrow , London, GB |
| Distance | 4200 miles |
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