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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 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: Wed Apr 8 2015 Return: Sat Apr 11 2015 Trip spans 4 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 Mar 16 2015 Return: Wed Mar 25 2015 Trip spans 10 days
Frontier
Frontier
TTN
2:25a
MDW
4:33a
2h 08m
nonstop
MDW
1:20p
TTN
3:09p
1h 49m
nonstop
Depart: Wed Mar 18 2015 Return: Wed Mar 25 2015 Trip spans 8 days
Frontier
Frontier
IAD
4:10a
ORD
6:05a
1h 55m
nonstop
ORD
8:35a
IAD
10:20a
1h 45m
nonstop
Depart: Wed Mar 11 2015 Return: Thu Mar 12 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MSP
2:51p
ORD
4:23p
1h 32m
nonstop
ORD
5:05a
MSP
6:30a
1h 25m
nonstop
Depart: Mon Apr 6 2015 Return: Thu Apr 9 2015 Trip spans 4 days
Sun Country Air
Sun Country Air
MSP
3:10a
MDW
4:35a
1h 25m
nonstop
MDW
2:35p
MSP
4:00p
1h 25m
nonstop
Depart: Wed May 13 2015 Return: Tue May 19 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
DFW
2:10a
ORD
4:30a
2h 20m
nonstop
ORD
4:08p
DFW
6:29p
2h 21m
nonstop
Depart: Tue Mar 10 2015 Return: Tue Mar 24 2015 Trip spans 15 days
Spirit Airlines
Spirit Airlines
LGA
4:30a
ORD
7:05a
2h 35m
nonstop
ORD
2:01p
LGA
4:10p
2h 09m
nonstop
Depart: Mon Mar 9 2015 Return: Tue Mar 10 2015 Trip spans 2 days
Frontier
Frontier
ATL
6:40a
ORD
8:40a
2h 00m
nonstop
ORD
3:05a
ATL
4:55a
1h 50m
nonstop
Depart: Mon Jul 13 2015 Return: Thu Jul 16 2015 Trip spans 4 days
Frontier
Frontier
RDU
1:15p
ORD
3:15p
2h 00m
nonstop
ORD
9:15a
RDU
11:05a
1h 50m
nonstop
Depart: Sat Mar 7 2015 Return: Tue Mar 10 2015 Trip spans 3 days
Frontier
Frontier
DEN
9:50a
ORD
12:10p
2h 20m
nonstop
ORD
2:55p
DEN
5:30p
2h 35m
nonstop
Depart: Wed Sep 2 2015 Return: Tue Sep 8 2015 Trip spans 7 days
American Airlines
American Airlines
MIA
3:10a
ORD
6:32a
3h 22m
nonstop
ORD
1:00a
MIA
3:59a
2h 59m
nonstop
Depart: Wed Aug 19 2015 Return: Sat Aug 29 2015 Trip spans 11 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 Sep 23 2015 Return: Sun Sep 27 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
PHL
2:00a
ORD
4:15a
2h 15m
nonstop
ORD
4:45p
PHL
6:40p
1h 55m
nonstop
Airports
Origin

New York
$97
Minneapolis
$79
Raleigh
$138
Atlanta
$98
Trenton
$78
Denver
$142
Dallas
$81
Philadelphia
$167
Washington
$78
Houston
only $77
only $77
Boston
$157
Miami
$145
Destination

Chicago
only $77
only $78