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Find Flight Deals from United States to Chicago O'Hare International

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights to Chicago O'Hare International

(Round-trip)
Depart: Thu Dec 25 2014 Return: Wed Dec 31 2014 Trip spans 7 days
Spirit Airlines
Spirit Airlines
MSP
1:50p
ORD
3:22p
1h 32m
nonstop
ORD
2:48p
MSP
4:14p
1h 26m
nonstop
Depart: Thu Jan 29 2015 Return: Sat Jan 31 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
DEN
1:00a
ORD
3:26a
2h 26m
nonstop
ORD
4:40p
DEN
7:22p
2h 42m
nonstop
Depart: Sun Jan 4 2015 Return: Wed Jan 7 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
MCI
11:25a
ORD
12:51p
1h 26m
nonstop
ORD
9:11a
MCI
10:41a
1h 30m
nonstop
Depart: Wed Jan 21 2015 Return: Tue Jan 27 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
MCO
12:35p
ORD
3:37p
3h 02m
nonstop
ORD
5:06a
MCO
7:43a
2h 37m
nonstop
Depart: Wed Feb 25 2015 Return: Sun Mar 1 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
TPA
9:20a
ORD
12:12p
2h 52m
nonstop
ORD
1:46a
TPA
4:23a
2h 37m
nonstop
Depart: Fri Feb 27 2015 Return: Mon Mar 2 2015 Trip spans 4 days
Frontier
Frontier
IAD
3:30a
ORD
5:35a
2h 05m
nonstop
ORD
7:50a
IAD
9:40a
1h 50m
nonstop
Depart: Sun Dec 28 2014 Return: Sat Jan 3 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
ATL
4:26a
ORD
6:25a
1h 59m
nonstop
ORD
6:05a
ATL
7:55a
1h 50m
nonstop
Depart: Sun May 17 2015 Return: Wed May 20 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
BOS
10:00a
ORD
12:43p
2h 43m
nonstop
ORD
9:38a
BOS
12:04p
2h 26m
nonstop
Depart: Tue May 19 2015 Return: Wed May 27 2015 Trip spans 9 days
Spirit Airlines
Spirit Airlines
PHL
2:05a
ORD
4:23a
2h 18m
nonstop
ORD
4:45p
PHL
6:41p
1h 56m
nonstop
Depart: Fri Dec 26 2014 Return: Mon Jan 5 2015 Trip spans 11 days
Spirit Airlines
Spirit Airlines
DFW
1:16a
ORD
3:35a
2h 19m
nonstop
ORD
4:15a
DFW
6:46a
2h 31m
nonstop
Depart: Sun Mar 22 2015 Return: Thu Mar 26 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
HOU
2:16a
ORD
4:51a
2h 35m
nonstop
ORD
4:17p
HOU
7:00p
2h 43m
nonstop
Depart: Mon May 25 2015 Return: Wed May 27 2015 Trip spans 3 days
United
United
CLE
4:30p
ORD
5:59p
1h 29m
nonstop
ORD
3:30a
CLE
4:48a
1h 18m
nonstop
Depart: Sun Jun 7 2015 Return: Wed Jun 10 2015 Trip spans 4 days
United
United
CMH
3:30a
ORD
4:50a
1h 20m
nonstop
ORD
10:30a
CMH
11:50a
1h 20m
nonstop
Depart: Sun Apr 26 2015 Return: Sat May 2 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
BWI
2:30a
ORD
4:32a
2h 02m
nonstop
ORD
4:05a
BWI
5:57a
1h 52m
nonstop
Depart: Fri Jun 19 2015 Return: Tue Jun 23 2015 Trip spans 5 days
Delta
Delta
EWR
7:00a
ORD
1:22p
6h 22m
1 stop
ORD
2:55a
EWR
8:50a
5h 55m
1 stop
Depart: Tue Jun 23 2015 Return: Tue Jun 30 2015 Trip spans 8 days
Delta
Delta
JFK
2:45a
ORD
5:15a
2h 30m
nonstop
ORD
2:40p
JFK
4:53p
2h 13m
nonstop
Depart: Sun May 31 2015 Return: Tue Jun 2 2015 Trip spans 3 days
Delta
Delta
SFO
8:35p
ORD
4:32a
7h 57m
1 stop
ORD
8:05a
SFO
2:28p
6h 23m
1 stop
Change your search
Airports
Origin

Kansas City
$87
Cleveland
$179
Washington
$105
New York City
$235
San Francisco
$246
Baltimore
$197
Minneapolis
$81
Atlanta
$137
Orlando
$97
Columbus
$193
Newark
$232
Denver
$81
Dallas
$167
Tampa
$97
Philadelphia
$157
Houston
$175
Boston
$157
Destination

Chicago
$81