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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: Wed Apr 29 2015 Return: Sat May 9 2015 Trip spans 11 days
Frontier
Frontier
PHL
ORD
2h 15m
nonstop
ORD
PHL
1h 55m
nonstop
Depart: Sat Apr 11 2015 Return: Mon Apr 13 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
MCI
ORD
1h 30m
nonstop
ORD
MCI
1h 30m
nonstop
Depart: Wed Apr 15 2015 Return: Mon Apr 27 2015 Trip spans 13 days
Spirit Airlines
Spirit Airlines
HOU
ORD
2h 35m
nonstop
ORD
HOU
2h 40m
nonstop
Depart: Wed May 20 2015 Return: Wed May 27 2015 Trip spans 8 days
Spirit Airlines
Spirit Airlines
IAH
ORD
2h 36m
nonstop
ORD
IAH
2h 40m
nonstop
Depart: Tue Jun 2 2015 Return: Sun Jun 7 2015 Trip spans 6 days
United
United
DFW
ORD
2h 22m
nonstop
ORD
DFW
2h 27m
nonstop
Depart: Thu Apr 9 2015 Return: Mon Apr 13 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
MSP
ORD
1h 28m
nonstop
ORD
MSP
1h 25m
nonstop
Depart: Tue Apr 21 2015 Return: Mon Apr 27 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
MSY
ORD
2h 20m
nonstop
ORD
MSY
2h 22m
nonstop
Depart: Sat Apr 25 2015 Return: Tue Apr 28 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 33m
nonstop
ORD
DEN
2h 33m
nonstop
Depart: Mon May 4 2015 Return: Tue May 5 2015 Trip spans 2 days
Frontier
Frontier
IAD
ORD
1h 55m
nonstop
ORD
IAD
1h 40m
nonstop
Depart: Fri Apr 17 2015 Return: Mon Apr 27 2015 Trip spans 11 days
Spirit Airlines
Spirit Airlines
FLL
ORD
3h 15m
nonstop
ORD
FLL
3h 00m
nonstop
Depart: Sat May 9 2015 Return: Thu May 14 2015 Trip spans 6 days
Frontier
Frontier
ATL
ORD
1h 55m
nonstop
ORD
ATL
1h 50m
nonstop
Depart: Mon May 11 2015 Return: Tue May 12 2015 Trip spans 2 days
Frontier
Frontier
RDU
ORD
2h 00m
nonstop
ORD
RDU
1h 55m
nonstop
Depart: Tue Apr 28 2015 Return: Tue May 12 2015 Trip spans 15 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 49m
nonstop
ORD
BOS
2h 29m
nonstop
Depart: Thu Apr 16 2015 Return: Tue Apr 21 2015 Trip spans 6 days
Frontier
Frontier
MIA
ORD
3h 15m
nonstop
ORD
MIA
3h 00m
nonstop
Depart: Fri May 29 2015 Return: Tue Jun 2 2015 Trip spans 5 days
Spirit Airlines
Spirit Airlines
LGA
ORD
2h 17m
nonstop
ORD
LGA
2h 10m
nonstop
Depart: Sat May 30 2015 Return: Mon Jun 1 2015 Trip spans 3 days
United
United
TPA
ORD
2h 54m
nonstop
ORD
TPA
2h 40m
nonstop
Depart: Wed Jul 22 2015 Return: Wed Jul 29 2015 Trip spans 8 days
Frontier
Frontier
AUS
ORD
2h 35m
nonstop
ORD
AUS
2h 30m
nonstop
Depart: Sun Apr 12 2015 Return: Sun Apr 19 2015 Trip spans 8 days
American Airlines
American Airlines
DTW
ORD
1h 28m
nonstop
ORD
DTW
1h 31m
nonstop
Depart: Mon Apr 13 2015 Return: Fri Apr 17 2015 Trip spans 5 days
United
United
CMH
ORD
1h 25m
nonstop
ORD
CMH
1h 16m
nonstop
Depart: Fri May 8 2015 Return: Mon May 11 2015 Trip spans 4 days
Frontier
Frontier
SLC
ORD
3h 00m
nonstop
ORD
SLC
3h 20m
nonstop
Airports
Origin

Kansas City
$79
New York
$147
Detroit
$167
Raleigh
$118
Fort Lauderdale
$117
Austin
$158
Washington
$112
Miami
$138
Minneapolis
$89
Atlanta
$118
New Orleans
$89
Columbus
$167
Salt Lake City
$172
Denver
$97
Dallas
$87
Tampa
$151
Philadelphia
$78
Houston
only $79
only $79
Boston
$127
Destination

Chicago
$78