Earn point on your loyalty program!arrow arc left

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

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.
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.
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.

Cheap flights from Chicago to London in January , February 2026

28 Jan - 04 Feb $ 605.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
LCY
London
LCY
London
Swiss International Air Lines
1 STOPS
CHI
Chicago
Pick dates
21 Jan - 10 Feb $ 1,076.00
CHI
Chicago
Swiss International Air Lines
1 STOPS
LCY
London
LCY
London
Swiss International Air Lines
1 STOPS
CHI
Chicago
Pick dates
21 Jan - 01 Feb $ 1,716.00
CHI
Chicago
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
CHI
Chicago
Pick dates

Last minute flights from Chicago to London

21 Jan - 31 Jan $ 989.00
CHI
Chicago
Aer Lingus
2 STOPS
LCY
London
LCY
London
Aer Lingus
2 STOPS
CHI
Chicago
Pick dates
21 Jan - 31 Jan $ 1,716.00
CHI
Chicago
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
CHI
Chicago
Pick dates
12 Jan - 31 Jan $ 1,770.00
CHI
Chicago
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
CHI
Chicago
Pick dates

One-way flights to London from Chicago

6:50 PM - 12:10 PM
United Airlines
1 Stops
12h 5m
CHI - LCY
$ 420
Kiwi
Pick dates
4:05 PM - 8:35 AM
Lufthansa
1 Stops
11h
CHI - LCY
$ 421
Kiwi
Pick dates
4:25 PM - 8:05 AM
KLM Royal Dutch Airlines
1 Stops
9h 45m
CHI - LCY
$ 470
Kiwi
Pick dates

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