Find Deals on Flights from Chicago to United Kingdom

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Chicago to United Kingdom

(Round-trip)
Depart: Fri Jan 20 2017 Return: Sun Jan 22 2017 Trip spans 3 days
British Airways
British Airways
ORD
LHR
7h 35m
nonstop
LHR
ORD
14h 05m
1 stop
Depart: Thu Mar 9 2017 Return: Fri Mar 10 2017 Trip spans 2 days
Finnair
Finnair
ORD
LHR
7h 35m
nonstop
LHR
ORD
55h 10m
2 stops
Depart: Wed Feb 8 2017 Return: Sat Feb 11 2017 Trip spans 4 days
Major Airline
Major Airline
ORD
LHR
19h 35m
1 stop
LHR
ORD
13h 05m
1 stop
Depart: Thu Feb 9 2017 Return: Sat Feb 11 2017 Trip spans 3 days
Iberia
Iberia
ORD
LGW
30h 45m
1 stop
LGW
ORD
24h 10m
1 stop
Depart: Fri Jan 20 2017 Return: Sun Feb 5 2017 Trip spans 17 days
Icelandair
Icelandair
ORD
LGW
10h 45m
1 stop
LGW
ORD
26h 20m
1 stop
Depart: Fri Dec 9 2016 Return: Sun Dec 11 2016 Trip spans 3 days
Aer Lingus
Aer Lingus
ORD
LHR
13h 00m
1 stop
LHR
ORD
11h 20m
1 stop
Depart: Fri Mar 3 2017 Return: Sun Mar 5 2017 Trip spans 3 days
KLM
KLM
MDW
LHR
16h 35m
1 stop
LHR
MDW
15h 22m
2 stops
Depart: Fri Jan 27 2017 Return: Fri Feb 3 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
MDW
LHR
12h 16m
1 stop
LHR
MDW
12h 20m
1 stop
Depart: Fri Mar 10 2017 Return: Sun Mar 19 2017 Trip spans 9 days
American Airlines
American Airlines
ORD
LGW
15h 50m
1 stop
LGW
ORD
21h 14m
1 stop
Depart: Thu Mar 2 2017 Return: Fri Mar 17 2017 Trip spans 15 days
Delta
Delta
MDW
LHR
15h 00m
1 stop
LHR
MDW
13h 15m
1 stop
Depart: Mon Feb 20 2017 Return: Wed Mar 1 2017 Trip spans 10 days
Austrian Airlines
Austrian Airlines
ORD
STN
20h 40m
1 stop
STN
ORD
24h 15m
1 stop
Depart: Thu Mar 30 2017 Return: Tue Apr 11 2017 Trip spans 13 days
SWISS
SWISS
ORD
LCY
15h 30m
1 stop
LCY
ORD
13h 50m
1 stop
Depart: Sat Apr 8 2017 Return: Sat Apr 15 2017 Trip spans 8 days
Air Canada
Air Canada
ORD
LHR
14h 40m
2 stops
LHR
ORD
11h 00m
1 stop
Depart: Wed Dec 28 2016 Return: Sat Jan 7 2017 Trip spans 11 days
United
United
ORD
BFS
11h 40m
1 stop
BFS
ORD
16h 41m
1 stop
Depart: Fri Jan 27 2017 Return: Sun Jan 29 2017 Trip spans 3 days
Air France
Air France
ORD
SOU
13h 11m
2 stops
SOU
ORD
19h 09m
2 stops
Depart: Sat Apr 8 2017 Return: Sat Apr 15 2017 Trip spans 8 days
Turkish Airlines
Turkish Airlines
ORD
LGW
36h 20m
1 stop
LGW
ORD
30h 35m
1 stop
Depart: Thu Mar 9 2017 Return: Sat Mar 11 2017 Trip spans 3 days
Finnair
Finnair
ORD
LHR
7h 35m
nonstop
LHR
ORD
37h 20m
2 stops
Depart: Thu Feb 16 2017 Return: Sat Feb 18 2017 Trip spans 3 days
Iberia
Iberia
ORD
LGW
32h 35m
1 stop
LGW
ORD
24h 10m
1 stop
Depart: Sat Mar 11 2017 Return: Mon Mar 20 2017 Trip spans 9 days
SAS
SAS
ORD
MAN
16h 10m
1 stop
MAN
ORD
14h 00m
1 stop
Depart: Fri Feb 3 2017 Return: Sun Feb 5 2017 Trip spans 3 days
Finnair
Finnair
ORD
LHR
7h 50m
nonstop
LHR
ORD
9h 10m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Chicago
only $393
only $485
Destination

Belfast
$617
Southampton
$617
London
only $393
only $577
only $451
only $564
Manchester
$910