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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: Wed Dec 24 2014 Return: Thu Dec 25 2014 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MSP
1:16a
ORD
2:45a
1h 29m
nonstop
ORD
4:05a
MSP
5:30a
1h 25m
nonstop
Depart: Wed Jan 7 2015 Return: Sat Jan 10 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
DEN
8:40a
ORD
11:09a
2h 29m
nonstop
ORD
6:07a
DEN
8:49a
2h 42m
nonstop
Depart: Wed Jan 14 2015 Return: Tue Jan 20 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
DFW
1:16a
ORD
3:35a
2h 19m
nonstop
ORD
4:15a
DFW
6:46a
2h 31m
nonstop
Depart: Wed Feb 4 2015 Return: Fri Feb 6 2015 Trip spans 3 days
Frontier
Frontier
IAD
1:55a
ORD
4:00a
2h 05m
nonstop
ORD
7:50a
IAD
9:40a
1h 50m
nonstop
Depart: Fri Dec 26 2014 Return: Tue Dec 30 2014 Trip spans 5 days
Spirit Airlines
Spirit Airlines
MCI
11:25a
ORD
12:51p
1h 26m
nonstop
ORD
9:12a
MCI
10:42a
1h 30m
nonstop
Depart: Tue Apr 28 2015 Return: Tue May 5 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: Wed Apr 1 2015 Return: Sat Apr 4 2015 Trip spans 4 days
American Airlines
American Airlines
BOS
5:12a
ORD
8:01a
2h 49m
nonstop
ORD
3:10a
BOS
5:31a
2h 21m
nonstop
Depart: Sun Apr 5 2015 Return: Wed Apr 8 2015 Trip spans 4 days
Frontier
Frontier
ATL
6:00a
ORD
8:00a
2h 00m
nonstop
ORD
3:30a
ATL
5:20a
1h 50m
nonstop
Depart: Sun Apr 19 2015 Return: Sat Apr 25 2015 Trip spans 7 days
American Airlines
American Airlines
FLL
3:04a
ORD
6:20a
3h 16m
nonstop
ORD
2:53a
FLL
5:53a
3h 00m
nonstop
Depart: Sun May 17 2015 Return: Mon May 25 2015 Trip spans 9 days
United
United
CMH
1:37p
ORD
3:00p
1h 23m
nonstop
ORD
1:30p
CMH
2:46p
1h 16m
nonstop
Depart: Sun May 10 2015 Return: Tue May 12 2015 Trip spans 3 days
Frontier
Frontier
TPA
2:25p
ORD
5:15p
2h 50m
nonstop
ORD
10:15a
TPA
12:50p
2h 35m
nonstop
Depart: Thu Jun 18 2015 Return: Sun Jun 21 2015 Trip spans 4 days
United
United
CLE
6:25a
ORD
7:58a
1h 33m
nonstop
ORD
1:30p
CLE
2:48p
1h 18m
nonstop
Change your search
Airports
Origin

Kansas City
$87
Minneapolis
$81
Atlanta
$168
Orlando
$141
Fort Lauderdale
$169
Columbus
$193
Denver
$81
Dallas
$81
Tampa
$205
Cleveland
$207
Washington
$82
Boston
$161
Destination

Chicago
$81