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Find Flight Deals from United States to Chicago

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

Book cheap flights to Chicago

(Round-trip)
Depart: Thu Mar 12 2015 Return: Tue Mar 17 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
HOU
2:16a
ORD
4:51a
2h 35m
nonstop
ORD
4:17p
HOU
7:00p
2h 43m
nonstop
Depart: Thu Mar 19 2015 Return: Tue Mar 24 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
IAH
2:16a
ORD
4:51a
2h 35m
nonstop
ORD
4:17p
IAH
7:00p
2h 43m
nonstop
Depart: Tue Mar 3 2015 Return: Fri Mar 13 2015 Trip spans 10 days
Spirit Airlines
Spirit Airlines
MSP
1:50p
ORD
3:22p
1h 32m
nonstop
ORD
5:05a
MSP
6:30a
1h 25m
nonstop
Depart: Sun Apr 5 2015 Return: Thu Apr 9 2015 Trip spans 5 days
Sun Country Air
Sun Country Air
MSP
12:20p
MDW
1:45p
1h 25m
nonstop
MDW
2:35p
MSP
4:00p
1h 25m
nonstop
Depart: Wed May 6 2015 Return: Sat May 16 2015 Trip spans 11 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 2 2015 Return: Tue May 5 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: Fri Mar 27 2015 Return: Tue Mar 31 2015 Trip spans 5 days
Frontier
Frontier
ATL
6:40a
ORD
8:40a
2h 00m
nonstop
ORD
3:05a
ATL
4:55a
1h 50m
nonstop
Depart: Fri Mar 6 2015 Return: Tue Mar 10 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
DEN
1:00a
ORD
3:25a
2h 25m
nonstop
ORD
7:10a
DEN
9:50a
2h 40m
nonstop
Depart: Tue Aug 25 2015 Return: Mon Aug 31 2015 Trip spans 7 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 12 2015 Return: Wed Aug 19 2015 Trip spans 8 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 Aug 24 2015 Return: Mon Aug 31 2015 Trip spans 8 days
American Airlines
American Airlines
TPA
3:15a
ORD
6:06a
2h 51m
nonstop
ORD
4:45a
TPA
7:27a
2h 42m
nonstop
Change your search
Airports
Origin

New York
$97
Minneapolis
$79
Atlanta
$108
Denver
$127
Dallas
$81
Tampa
$162
Philadelphia
$162
Houston
only $77
only $77
Boston
$157
Destination

Chicago
only $77
only $81