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Cheap flights from Chicago (CHI) to London (LCY)

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How to find the cheapest flight from Chicago (CHI) to London (LCY)

How to find the cheapest flight from Chicago (CHI) to London (LCY)
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How to find the cheapest flight from Chicago (CHI) to London (LCY)
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How to find the cheapest flight from Chicago (CHI) to London (LCY)
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Cheap flights from Chicago to London in December 2025 , January 2026

31 Dec - 28 Jan $ 934.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
LCY
London
LCY
London
Swiss International Air Lines
1 STOPS
CHI
Chicago
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16 Dec - 15 Jan $ 1,312.00
CHI
Chicago
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
CHI
Chicago
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21 Dec - 01 Jan $ 2,685.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
LCY
London
LCY
London
Swiss International Air Lines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to London

25 Dec - 31 Dec $ 1,518.00
CHI
Chicago
United Airlines
1 STOPS
LCY
London
LCY
London
United Airlines
1 STOPS
CHI
Chicago
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25 Dec - 01 Jan $ 1,539.00
CHI
Chicago
United Airlines
1 STOPS
LCY
London
LCY
London
United Airlines
1 STOPS
CHI
Chicago
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21 Dec - 31 Dec $ 2,646.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
LCY
London
LCY
London
Swiss International Air Lines
1 STOPS
CHI
Chicago
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One-way flights to London from Chicago

4:10 PM - 8:35 AM
Swiss International Air Lines
1 Stops
11h 15m
CHI - LCY
$ 414
Kiwi
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4:10 PM - 12:10 PM
Swiss International Air Lines
1 Stops
14h 45m
CHI - LCY
$ 689
Kiwi
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4:10 PM - 12:10 PM
Swiss International Air Lines
1 Stops
14h 45m
CHI - LCY
$ 699
Kiwi
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How to find the cheapest flight from Chicago (CHI) to London (LCY)

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