Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

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

How to find the cheapest flight from St Louis (STL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from St Louis to London in July , August 2026

26 Jul - 26 Aug $ 1,492.00
STL
St Louis
Air Canada
1 STOPS
LCY
London
LCY
London
Air Canada
3 STOPS
STL
St Louis
Pick dates
26 Jul - 27 Aug $ 1,505.00
STL
St Louis
Air Canada
1 STOPS
LCY
London
LCY
London
Air Canada
3 STOPS
STL
St Louis
Pick dates
26 Jul - 04 Aug $ 2,501.00
STL
St Louis
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to London

26 Jul - 01 Aug $ 2,265.00
STL
St Louis
Air Canada
1 STOPS
LCY
London
LCY
London
Air Canada
3 STOPS
STL
St Louis
Pick dates
27 Jul - 01 Aug $ 3,006.00
STL
St Louis
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates
27 Jul - 31 Jul $ 3,297.00
STL
St Louis
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates

One-way flights to London from St Louis

3:30 PM - 5:30 PM
Lufthansa
1 Stops
20h 25m
STL - LCY
$ 750
Kiwi
Pick dates
7:05 PM - 11:55 AM
United Airlines
2 Stops
35h 30m
STL - LCY
$ 924
Kiwi
Pick dates
1:13 PM - 11:00 AM
Swiss International Air Lines
2 Stops
16h 27m
STL - LCY
$ 1,075
Kiwi
Pick dates

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

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.