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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 Mar 17 2015 Return: Tue Mar 31 2015 Trip spans 15 days
Spirit Airlines
Spirit Airlines
HOU
2:16a
ORD
4:51a
2h 35m
nonstop
ORD
4:17p
HOU
7:00p
2h 43m
nonstop
Depart: Tue May 5 2015 Return: Wed May 6 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
IAH
2:39p
ORD
5:15p
2h 36m
nonstop
ORD
3:00p
IAH
5:42p
2h 42m
nonstop
Depart: Mon Mar 9 2015 Return: Tue Mar 10 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MCI
12:24p
ORD
1:54p
1h 30m
nonstop
ORD
10:14a
MCI
11:44a
1h 30m
nonstop
Depart: Sat Mar 14 2015 Return: Tue Mar 17 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
MSP
2:51p
ORD
4:23p
1h 32m
nonstop
ORD
3:41p
MSP
5:09p
1h 28m
nonstop
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
Spirit Airlines
Spirit Airlines
DFW
2:10a
ORD
4:30a
2h 20m
nonstop
ORD
4:08p
DFW
6:29p
2h 21m
nonstop
Depart: Sat May 30 2015 Return: Tue Jun 2 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
LGA
5:55p
ORD
8:12p
2h 17m
nonstop
ORD
1:53a
LGA
4:00a
2h 07m
nonstop
Depart: Thu Mar 12 2015 Return: Tue Mar 17 2015 Trip spans 6 days
Frontier
Frontier
ATL
6:40a
ORD
8:40a
2h 00m
nonstop
ORD
3:05a
ATL
4:55a
1h 50m
nonstop
Depart: Sat Jul 25 2015 Return: Sat Aug 8 2015 Trip spans 15 days
Frontier
Frontier
RDU
1:15p
ORD
3:15p
2h 00m
nonstop
ORD
9:15a
RDU
11:05a
1h 50m
nonstop
Depart: Mon Aug 24 2015 Return: Thu Aug 27 2015 Trip spans 4 days
American Airlines
American Airlines
TPA
3:15a
ORD
6:06a
2h 51m
nonstop
ORD
4:45a
TPA
7:27a
2h 42m
nonstop
Depart: Sat Aug 22 2015 Return: Mon Aug 24 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
BOS
9:54a
ORD
12:44p
2h 50m
nonstop
ORD
9:40a
BOS
12:08p
2h 28m
nonstop
Depart: Wed Aug 19 2015 Return: Mon Aug 24 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
PHL
2:05a
ORD
4:24a
2h 19m
nonstop
ORD
4:50p
PHL
6:46p
1h 56m
nonstop
Depart: Mon Sep 21 2015 Return: Mon Sep 28 2015 Trip spans 8 days
Delta
Delta
PHX
7:35p
ORD
1:54a
6h 19m
1 stop
ORD
6:50a
PHX
12:40p
5h 50m
1 stop
Change your search
Airports
Origin

Kansas City
$79
New York
$97
Minneapolis
$79
Raleigh
$138
Atlanta
$98
Phoenix
$204
Dallas
$81
Tampa
$145
Philadelphia
$167
Houston
only $77
only $77
Boston
$157
Destination

Chicago
$77