Good to Know: LHR to STL Flights
Useful information for finding cheap flights from London Heathrow to Lambert St Louis International and booking your next trip
Cheapest Round Trip Flight
£1746
Finnair• nonstop • 15h 5mOct 13 – Oct 20
The cheapest round trip flight from London Heathrow to Lambert St Louis International is currently £1746
Cheapest Direct Flight
£1738
British Airways• nonstop• 54h 11mOct 13
The cheapest nonstop flight from London Heathrow to Lambert St Louis International is currently £1738
Fastest Flight
15h 5m
The fastest nonstop flight from London Heathrow to Lambert St Louis International takes 15h 5m
Best Flight Deals from London to St Louis
Explore the lowest round-trip fares from London to St Louis. We've compared hundreds of airlines and travel sites so you don't have to.
Oct 13 - Oct 20, Economy
London → St Louis
15h 5m
4:25 PM - 7:30 PM • nonstop
London → St Louis
13h 20m
9:35 PM - 11:35 AM • nonstop
Finnair
Oct 13 - Oct 20, Economy
London → St Louis
54h 11m
7:30 PM - 1:25 PM • 1 stop
London → St Louis
32h 30m
2:40 PM - 6:35 AM • 1 stop
Lufthansa Airlines
Oct 13 - Oct 20, Economy
London → St Louis
18h 33m
9:20 AM - 4:28 PM • 1 stop
London → St Louis
15h 2m
2:38 PM - 7:10 AM • 1 stop
Scandinavian Airlines
Oct 13 - Oct 20, Economy
London → St Louis
54h 11m
3:15 PM - 12:19 AM • 1 stop
London → St Louis
32h 30m
9:35 PM - 11:35 AM • nonstop
British Airways
Oct 13 - Oct 20, Economy
London → St Louis
54h 11m
8:10 PM - 6:41 PM • 2 stops
London → St Louis
32h 30m
2:40 PM - 6:35 AM • 1 stop
Easyjet
Whether you're moving or just visiting, here are some of the best one-way flight options from LHR to STL—searched and filtered with flexibility in mind.
Need to fly soon? We've surfaced some of the most affordable last-minute flights from London to St Louis, ideal for urgent plans or spontaneous trips.
Looking for the fastest way to St Louis? These direct flight options from LHR to STL offer both convenience and value—no layovers, just straight to your destination.
Oct 13 - Oct 20, Economy
London → St Louis
54h 11m
4:25 PM - 7:30 PM • nonstop
London → St Louis
32h 30m
9:35 PM - 11:35 AM • nonstop
British Airways
Oct 13 - Oct 20, Economy
London → St Louis
15h 5m
4:25 PM - 7:30 PM • nonstop
London → St Louis
13h 20m
9:35 PM - 11:35 AM • nonstop
Finnair
Oct 13 - Oct 20, Economy
London → St Louis
54h 11m
4:25 PM - 7:30 PM • nonstop
London → St Louis
32h 30m
9:35 PM - 11:35 AM • nonstop
Iberia Airlines
Flights from London to St Louis
| Origin Airport | London Heathrow , London, GB |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | miles |
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