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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: Tue May 19 2015 Return: Wed May 20 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
HOU
ORD
2h 30m
nonstop
ORD
HOU
2h 40m
nonstop
Depart: Wed May 20 2015 Return: Wed Jun 3 2015 Trip spans 15 days
Spirit Airlines
Spirit Airlines
IAH
ORD
2h 30m
nonstop
ORD
IAH
2h 42m
nonstop
Depart: Thu Apr 30 2015 Return: Mon May 4 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
MSP
ORD
1h 24m
nonstop
ORD
MSP
1h 25m
nonstop
Depart: Thu May 28 2015 Return: Sun Jun 7 2015 Trip spans 11 days
United
United
DFW
ORD
2h 24m
nonstop
ORD
DFW
2h 27m
nonstop
Depart: Fri May 29 2015 Return: Wed Jun 3 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
TPA
ORD
2h 46m
nonstop
ORD
TPA
2h 40m
nonstop
Depart: Sat May 9 2015 Return: Tue May 12 2015 Trip spans 4 days
Frontier
Frontier
DEN
ORD
2h 20m
nonstop
ORD
DEN
2h 35m
nonstop
Depart: Sat May 30 2015 Return: Sat Jun 6 2015 Trip spans 8 days
Frontier
Frontier
ATL
ORD
1h 55m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Mon Apr 27 2015 Return: Thu Apr 30 2015 Trip spans 4 days
Sun Country Air
Sun Country Air
MSP
MDW
1h 25m
nonstop
MDW
MSP
1h 25m
nonstop
Depart: Tue May 5 2015 Return: Wed May 13 2015 Trip spans 9 days
Spirit Airlines
Spirit Airlines
PHL
ORD
2h 19m
nonstop
ORD
PHL
1h 56m
nonstop
Depart: Thu May 7 2015 Return: Sat May 16 2015 Trip spans 10 days
Spirit Airlines
Spirit Airlines
FLL
ORD
3h 15m
nonstop
ORD
FLL
3h 05m
nonstop
Depart: Thu May 21 2015 Return: Tue May 26 2015 Trip spans 6 days
Frontier
Frontier
MIA
ORD
3h 10m
nonstop
ORD
MIA
3h 05m
nonstop
Depart: Wed May 6 2015 Return: Wed Jun 10 2015 Trip spans 36 days
Spirit Airlines
Spirit Airlines
LGA
ORD
2h 29m
nonstop
ORD
LGA
2h 07m
nonstop
Depart: Mon May 4 2015 Return: Sat May 9 2015 Trip spans 6 days
Frontier
Frontier
RDU
ORD
2h 00m
nonstop
ORD
RDU
1h 55m
nonstop
Depart: Sun May 31 2015 Return: Tue Jun 2 2015 Trip spans 3 days
Frontier
Frontier
IAD
ORD
1h 55m
nonstop
ORD
IAD
1h 40m
nonstop
Depart: Tue Jun 23 2015 Return: Tue Jun 30 2015 Trip spans 8 days
Frontier
Frontier
MCO
ORD
2h 50m
nonstop
ORD
MCO
2h 45m
nonstop
Depart: Thu Oct 29 2015 Return: Mon Nov 2 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 48m
nonstop
ORD
BOS
2h 23m
nonstop
Depart: Wed Sep 23 2015 Return: Tue Sep 29 2015 Trip spans 7 days
Frontier
Frontier
AUS
ORD
2h 35m
nonstop
ORD
AUS
2h 40m
nonstop
Depart: Mon Jun 15 2015 Return: Wed Jun 24 2015 Trip spans 10 days
JetBlue Airways
JetBlue Airways
JFK
ORD
2h 30m
nonstop
ORD
JFK
2h 19m
nonstop
Depart: Sat Sep 5 2015 Return: Tue Sep 8 2015 Trip spans 4 days
American Airlines
American Airlines
DCA
ORD
2h 02m
nonstop
ORD
DCA
1h 53m
nonstop
Depart: Tue Aug 11 2015 Return: Tue Aug 18 2015 Trip spans 8 days
Delta
Delta
DAL
ORD
4h 50m
1 stop
ORD
DAL
5h 10m
1 stop
Airports
Origin

New York
only $177
only $137
Raleigh
$138
Fort Lauderdale
$117
Austin
$158
Washington
only $145
only $177
Miami
$118
Minneapolis
$81
Atlanta
$98
Orlando
$145
Denver
$88
Dallas
only $81
only $184
Tampa
$87
Philadelphia
$117
Houston
only $79
only $79
Boston
$157
Destination

Chicago
only $79
only $99