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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: Mon May 4 2015 Return: Wed May 6 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
MCI
ORD
1h 37m
nonstop
ORD
MCI
1h 25m
nonstop
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
United
United
DFW
ORD
2h 24m
nonstop
ORD
DFW
2h 31m
nonstop
Depart: Sat May 9 2015 Return: Wed May 13 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 27m
nonstop
ORD
DEN
2h 33m
nonstop
Depart: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 00m
nonstop
ORD
ATL
1h 53m
nonstop
Depart: Sun May 17 2015 Return: Mon May 18 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MSP
ORD
1h 24m
nonstop
ORD
MSP
1h 25m
nonstop
Depart: Tue May 5 2015 Return: Wed May 6 2015 Trip spans 2 days
Frontier
Frontier
TTN
ORD
2h 10m
nonstop
ORD
TTN
2h 00m
nonstop
Depart: Sat May 30 2015 Return: Wed Jun 3 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
HOU
ORD
2h 36m
nonstop
ORD
HOU
2h 42m
nonstop
Depart: Mon Jun 1 2015 Return: Tue Jun 2 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
IAH
ORD
2h 30m
nonstop
ORD
IAH
2h 42m
nonstop
Depart: Thu Jun 4 2015 Return: Tue Jun 9 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
FLL
ORD
3h 15m
nonstop
ORD
FLL
3h 05m
nonstop
Depart: Thu May 14 2015 Return: Tue Jun 2 2015 Trip spans 20 days
Frontier
Frontier
MIA
ORD
3h 10m
nonstop
ORD
MIA
3h 05m
nonstop
Depart: Wed May 20 2015 Return: Tue May 26 2015 Trip spans 7 days
Frontier
Frontier
LAS
ORD
3h 30m
nonstop
ORD
LAS
3h 55m
nonstop
Depart: Wed May 6 2015 Return: Wed May 13 2015 Trip spans 8 days
Spirit Airlines
Spirit Airlines
TPA
ORD
2h 46m
nonstop
ORD
TPA
2h 40m
nonstop
Depart: Tue Jun 30 2015 Return: Sat Jul 4 2015 Trip spans 5 days
Frontier
Frontier
PHL
ORD
2h 20m
nonstop
ORD
PHL
2h 10m
nonstop
Depart: Fri Sep 11 2015 Return: Sun Sep 13 2015 Trip spans 3 days
Frontier
Frontier
RDU
ORD
2h 05m
nonstop
ORD
RDU
1h 50m
nonstop
Depart: Sun Jun 7 2015 Return: Tue Jun 9 2015 Trip spans 3 days
Frontier
Frontier
IAD
ORD
2h 00m
nonstop
ORD
IAD
1h 50m
nonstop
Depart: Tue May 12 2015 Return: Wed May 20 2015 Trip spans 9 days
Spirit Airlines
Spirit Airlines
LGA
ORD
2h 29m
nonstop
ORD
LGA
2h 07m
nonstop
Depart: Wed Sep 23 2015 Return: Mon Sep 28 2015 Trip spans 6 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 48m
nonstop
ORD
BOS
2h 23m
nonstop
Depart: Sat May 2 2015 Return: Thu May 7 2015 Trip spans 6 days
Frontier
Frontier
SLC
ORD
3h 00m
nonstop
ORD
SLC
3h 20m
nonstop
Depart: Tue Sep 8 2015 Return: Wed Sep 9 2015 Trip spans 2 days
Frontier
Frontier
AUS
ORD
2h 35m
nonstop
ORD
AUS
2h 40m
nonstop
Depart: Sat Jun 27 2015 Return: Mon Jun 29 2015 Trip spans 3 days
Frontier
Frontier
MCO
ORD
2h 50m
nonstop
ORD
MCO
2h 45m
nonstop
Airports
Origin

Kansas City
$79
New York
$157
Raleigh
$138
Fort Lauderdale
$117
Austin
$158
Washington
$145
Miami
$118
Minneapolis
$97
Atlanta
$97
Orlando
$175
Salt Lake City
$158
Trenton
$105
Denver
$97
Dallas
$81
Tampa
$127
Philadelphia
$138
Las Vegas
$118
Houston
only $108
only $108
Boston
$157
Destination

Chicago
$79