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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: Tue Jan 20 2015 Return: Tue Jan 27 2015 Trip spans 8 days
Frontier
Frontier
ATL
5:05a
ORD
7:05a
2h 00m
nonstop
ORD
1:25a
ATL
3:15a
1h 50m
nonstop
Depart: Wed Dec 24 2014 Return: Wed Dec 31 2014 Trip spans 8 days
Spirit Airlines
Spirit Airlines
MSP
1:16a
ORD
2:45a
1h 29m
nonstop
ORD
2:48p
MSP
4:14p
1h 26m
nonstop
Depart: Wed Jan 7 2015 Return: Thu Jan 8 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
DEN
1:00a
ORD
3:26a
2h 26m
nonstop
ORD
4:40p
DEN
7:22p
2h 42m
nonstop
Depart: Fri Jan 2 2015 Return: Mon Jan 5 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: Fri Jan 16 2015 Return: Wed Jan 21 2015 Trip spans 6 days
Frontier
Frontier
IAD
3:20a
ORD
5:25a
2h 05m
nonstop
ORD
7:50a
IAD
9:40a
1h 50m
nonstop
Depart: Tue May 12 2015 Return: Tue May 19 2015 Trip spans 8 days
Spirit Airlines
Spirit Airlines
MCO
1:16p
ORD
4:12p
2h 56m
nonstop
ORD
6:52a
MCO
9:27a
2h 35m
nonstop
Depart: Tue May 26 2015 Return: Tue Jun 2 2015 Trip spans 8 days
Spirit Airlines
Spirit Airlines
PHL
2:05a
ORD
4:23a
2h 18m
nonstop
ORD
4:45p
PHL
6:41p
1h 56m
nonstop
Depart: Tue Jun 30 2015 Return: Tue Jul 14 2015 Trip spans 15 days
American Airlines
American Airlines
BOS
2:00a
ORD
4:51a
2h 51m
nonstop
ORD
3:10a
BOS
5:31a
2h 21m
nonstop
Depart: Wed Jun 24 2015 Return: Wed Jul 1 2015 Trip spans 8 days
United
United
TPA
8:40a
ORD
11:29a
2h 49m
nonstop
ORD
10:15a
TPA
12:54p
2h 39m
nonstop
Depart: Wed Jun 17 2015 Return: Sat Jun 20 2015 Trip spans 4 days
United
United
CLE
5:35a
ORD
7:01a
1h 26m
nonstop
ORD
11:30a
CLE
12:48p
1h 18m
nonstop
Depart: Sat Jun 27 2015 Return: Tue Jun 30 2015 Trip spans 4 days
United
United
CMH
1:37p
ORD
3:00p
1h 23m
nonstop
ORD
10:30a
CMH
11:50a
1h 20m
nonstop
Depart: Sun May 31 2015 Return: Thu Jun 4 2015 Trip spans 5 days
United
United
OMA
10:45a
ORD
12:22p
1h 37m
nonstop
ORD
2:50p
OMA
4:27p
1h 37m
nonstop
Depart: Sun Jun 7 2015 Return: Tue Jun 9 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
OAK
4:35a
ORD
8:42a
4h 07m
nonstop
ORD
10:35a
OAK
3:12p
4h 37m
nonstop
Depart: Sun Apr 26 2015 Return: Mon Apr 27 2015 Trip spans 2 days
Frontier
Frontier
SLC
2:45p
ORD
5:50p
3h 05m
nonstop
ORD
11:35a
SLC
3:00p
3h 25m
nonstop
Change your search
Airports
Origin

Kansas City
$87
Oakland
$222
Cleveland
$197
Washington
$92
Omaha
$218
Minneapolis
$81
Atlanta
$78
Orlando
$141
Columbus
$203
Salt Lake City
$225
Denver
$81
Tampa
$173
Philadelphia
$157
Boston
$161
Destination

Chicago
$78