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 January , February 2026

21 Jan - 25 Feb $ 982.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
25 Jan - 25 Feb $ 982.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
18 Jan - 25 Feb $ 1,000.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to London

21 Jan - 02 Feb $ 1,245.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
21 Jan - 01 Feb $ 1,289.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
25 Jan - 01 Feb $ 1,289.00
STL
St Louis
Frontier Airlines
1 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates

One-way flights to London from St Louis

3:50 PM - 8:35 AM
Lufthansa
1 Stops
11h 15m
STL - LCY
$ 421
Kiwi
Pick dates
3:50 PM - 8:35 AM
Lufthansa
1 Stops
11h 15m
STL - LCY
$ 429
Kiwi
Pick dates
3:11 PM - 12:10 PM
United Airlines
2 Stops
15h 44m
STL - LCY
$ 443
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.