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

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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)
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How to find the cheapest flight from St Louis (STL) to London (LCY)
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How to find the cheapest flight from St Louis (STL) to London (LCY)
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Cheap flights from St Louis to London in December 2025 , January 2026

31 Dec - 29 Jan $ 1,209.00
STL
St Louis
Frontier Airlines
3 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
STL
St Louis
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30 Dec - 29 Jan $ 1,285.00
STL
St Louis
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
2 STOPS
STL
St Louis
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17 Dec - 09 Jan $ 2,611.00
STL
St Louis
Lufthansa
2 STOPS
LCY
London
LCY
London
Lufthansa
1 STOPS
STL
St Louis
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Last minute flights from St Louis to London

30 Dec - 01 Jan $ 1,763.00
STL
St Louis
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
STL
St Louis
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17 Dec - 31 Dec $ 4,052.00
STL
St Louis
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
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21 Dec - 31 Dec $ 4,517.00
STL
St Louis
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
STL
St Louis
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One-way flights to London from St Louis

3:50 PM - 7:30 PM
KLM Royal Dutch Airlines
3 Stops
21h 45m
STL - LCY
$ 674
Kiwi
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8:05 AM - 4:25 PM
Swiss International Air Lines
2 Stops
27h
STL - LCY
$ 792
Kiwi
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3:50 PM - 8:35 AM
Lufthansa
1 Stops
11h 15m
STL - LCY
$ 1,106
Kiwi
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How to find the cheapest flight from St Louis (STL) to London (LCY)

Related info for your journey
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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.