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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: Sat Apr 18 2015 Return: Tue Apr 21 2015 Trip spans 4 days
Frontier
Frontier
AUS
ORD
2h 35m
nonstop
ORD
AUS
2h 45m
nonstop
Depart: Wed Apr 29 2015 Return: Tue May 12 2015 Trip spans 14 days
Frontier
Frontier
IAD
ORD
1h 55m
nonstop
ORD
IAD
1h 40m
nonstop
Depart: Wed Apr 15 2015 Return: Tue Apr 28 2015 Trip spans 14 days
Spirit Airlines
Spirit Airlines
HOU
ORD
2h 35m
nonstop
ORD
HOU
2h 42m
nonstop
Depart: Mon Apr 6 2015 Return: Thu Apr 9 2015 Trip spans 4 days
Sun Country Air
Sun Country Air
MSP
MDW
1h 25m
nonstop
MDW
MSP
1h 25m
nonstop
Depart: Tue Apr 7 2015 Return: Wed Apr 8 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MSP
ORD
1h 28m
nonstop
ORD
MSP
1h 28m
nonstop
Depart: Wed May 20 2015 Return: Tue May 26 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
DFW
ORD
2h 22m
nonstop
ORD
DFW
2h 12m
nonstop
Depart: Tue May 12 2015 Return: Wed May 27 2015 Trip spans 16 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 27m
nonstop
ORD
DEN
2h 33m
nonstop
Depart: Tue Apr 21 2015 Return: Wed Apr 22 2015 Trip spans 2 days
Frontier
Frontier
ATL
ORD
2h 00m
nonstop
ORD
ATL
1h 50m
nonstop
Depart: Wed Apr 22 2015 Return: Tue Apr 28 2015 Trip spans 7 days
Frontier
Frontier
PHL
ORD
2h 15m
nonstop
ORD
PHL
1h 55m
nonstop
Depart: Wed May 6 2015 Return: Tue May 12 2015 Trip spans 7 days
Frontier
Frontier
MCO
ORD
2h 45m
nonstop
ORD
MCO
2h 40m
nonstop
Depart: Thu Apr 30 2015 Return: Sat May 16 2015 Trip spans 17 days
Frontier
Frontier
RDU
ORD
2h 00m
nonstop
ORD
RDU
1h 55m
nonstop
Depart: Fri Apr 17 2015 Return: Sun Apr 19 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
FLL
ORD
3h 15m
nonstop
ORD
FLL
3h 00m
nonstop
Depart: Sat Apr 25 2015 Return: Wed May 6 2015 Trip spans 12 days
Spirit Airlines
Spirit Airlines
LGA
ORD
2h 29m
nonstop
ORD
LGA
2h 07m
nonstop
Depart: Fri Aug 28 2015 Return: Sun Aug 30 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
IAH
ORD
2h 43m
nonstop
ORD
IAH
2h 40m
nonstop
Depart: Thu Sep 10 2015 Return: Mon Sep 14 2015 Trip spans 5 days
American Airlines
American Airlines
TPA
ORD
2h 51m
nonstop
ORD
TPA
2h 46m
nonstop
Depart: Tue Sep 22 2015 Return: Wed Sep 30 2015 Trip spans 9 days
American Airlines
American Airlines
MIA
ORD
3h 22m
nonstop
ORD
MIA
2h 59m
nonstop
Depart: Sat Aug 22 2015 Return: Wed Aug 26 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 50m
nonstop
ORD
BOS
2h 28m
nonstop
Depart: Tue Jul 7 2015 Return: Wed Jul 8 2015 Trip spans 2 days
JetBlue Airways
JetBlue Airways
JFK
ORD
2h 33m
nonstop
ORD
JFK
2h 23m
nonstop
Depart: Mon Apr 27 2015 Return: Sat May 2 2015 Trip spans 6 days
Frontier
Frontier
LAX
ORD
3h 55m
nonstop
ORD
LAX
4h 30m
nonstop
Depart: Sun May 24 2015 Return: Thu May 28 2015 Trip spans 5 days
Delta
Delta
DAL
ORD
4h 59m
1 stop
ORD
DAL
5h 10m
1 stop
Airports
Origin

New York
only $177
only $117
Raleigh
$108
Fort Lauderdale
$117
Austin
$58
Washington
$58
Miami
$146
Minneapolis
$81
Atlanta
$98
Orlando
$98
Los Angeles
$178
Denver
$97
Dallas
only $81
only $184
Tampa
$146
Philadelphia
$98
Houston
only $137
only $79
Boston
$157
Destination

Chicago
only $58
only $81