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 April , May 2026

29 Apr - 19 May $ 1,592.00
STL
St Louis
WestJet
3 STOPS
LCY
London
LCY
London
WestJet
3 STOPS
STL
St Louis
Pick dates
28 Apr - 05 May $ 2,489.00
STL
St Louis
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates
28 Apr - 08 May $ 2,490.00
STL
St Louis
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates

Last minute flights from St Louis to London

28 Apr - 02 May $ 2,200.00
STL
St Louis
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
Pick dates
28 Apr - 30 Apr $ 3,382.00
STL
St Louis
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
Pick dates
28 Apr - 01 May $ 3,391.00
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

4:59 PM - 5:30 PM
Lufthansa
3 Stops
42h 56m
STL - LCY
$ 829
Kiwi
Pick dates
1:29 PM - 8:45 AM
Aer Lingus
2 Stops
14h 51m
STL - LCY
$ 1,199
Kiwi
Pick dates
5:21 PM - 3:45 PM
Aer Lingus
2 Stops
17h 59m
STL - LCY
$ 1,199
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.