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Find Deals on Flights 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 Aug 26 2015 Return: Sat Sep 5 2015 Trip spans 11 days
Frontier
Frontier
PHL
ORD
2h 20m
nonstop
ORD
PHL
1h 55m
nonstop
Depart: Tue Sep 1 2015 Return: Wed Sep 2 2015 Trip spans 2 days
Frontier
Frontier
TTN
ORD
2h 10m
nonstop
ORD
TTN
1h 55m
nonstop
Depart: Tue Sep 22 2015 Return: Wed Sep 23 2015 Trip spans 2 days
Frontier
Frontier
RDU
ORD
2h 10m
nonstop
ORD
RDU
1h 55m
nonstop
Depart: Tue Sep 8 2015 Return: Tue Sep 15 2015 Trip spans 8 days
Frontier
Frontier
IAD
ORD
2h 05m
nonstop
ORD
IAD
1h 50m
nonstop
Depart: Sat Sep 12 2015 Return: Tue Sep 15 2015 Trip spans 4 days
Frontier
Frontier
AUS
ORD
2h 40m
nonstop
ORD
AUS
2h 40m
nonstop
Depart: Wed Sep 16 2015 Return: Sat Sep 26 2015 Trip spans 11 days
Frontier
Frontier
ATL
ORD
2h 05m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Tue Oct 13 2015 Return: Tue Oct 20 2015 Trip spans 8 days
Frontier
Frontier
DEN
ORD
2h 20m
nonstop
ORD
DEN
2h 35m
nonstop
Depart: Mon Aug 31 2015 Return: Wed Sep 2 2015 Trip spans 3 days
Spirit Airlines
Spirit Airlines
MSP
ORD
1h 26m
nonstop
ORD
MSP
1h 27m
nonstop
Depart: Wed Jul 8 2015 Return: Thu Jul 9 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
ACY
ORD
2h 28m
nonstop
ORD
ACY
1h 54m
nonstop
Depart: Thu Jul 9 2015 Return: Fri Jul 10 2015 Trip spans 2 days
Spirit Airlines
Spirit Airlines
MCO
ORD
3h 03m
nonstop
ORD
MCO
2h 36m
nonstop
Depart: Sat Jul 11 2015 Return: Wed Jul 15 2015 Trip spans 5 days
American Airlines
American Airlines
MCI
ORD
1h 46m
nonstop
ORD
MCI
1h 33m
nonstop
Depart: Wed Jul 15 2015 Return: Tue Jul 21 2015 Trip spans 7 days
Spirit Airlines
Spirit Airlines
BWI
ORD
2h 10m
nonstop
ORD
BWI
1h 52m
nonstop
Depart: Fri Jul 31 2015 Return: Fri Aug 14 2015 Trip spans 15 days
United
United
HOU
ORD
2h 49m
nonstop
ORD
HOU
2h 40m
nonstop
Depart: Thu Sep 10 2015 Return: Sun Sep 13 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
MSY
ORD
2h 32m
nonstop
ORD
MSY
2h 13m
nonstop
Depart: Sat Dec 12 2015 Return: Tue Dec 15 2015 Trip spans 4 days
Spirit Airlines
Spirit Airlines
IAH
ORD
2h 28m
nonstop
ORD
IAH
2h 43m
nonstop
Depart: Tue Aug 11 2015 Return: Tue Aug 18 2015 Trip spans 8 days
Frontier
Frontier
MIA
ORD
3h 20m
nonstop
ORD
MIA
3h 05m
nonstop
Depart: Sat Sep 19 2015 Return: Tue Sep 22 2015 Trip spans 4 days
Frontier
Frontier
SLC
ORD
3h 04m
nonstop
ORD
SLC
3h 30m
nonstop
Depart: Fri Jul 24 2015 Return: Sun Jul 26 2015 Trip spans 3 days
American Airlines
American Airlines
FLL
ORD
3h 14m
nonstop
ORD
FLL
3h 10m
nonstop
Depart: Wed Aug 12 2015 Return: Tue Aug 18 2015 Trip spans 7 days
United
United
BOS
ORD
2h 41m
nonstop
ORD
BOS
2h 25m
nonstop
Depart: Tue Nov 24 2015 Return: Wed Nov 25 2015 Trip spans 2 days
American Airlines
American Airlines
PHX
ORD
3h 23m
nonstop
ORD
PHX
3h 41m
nonstop
Airports
Origin

Atlantic City
$137
Kansas City
$137
Raleigh
$42
Fort Lauderdale
$147
Austin
$98
Washington
$98
Miami
$138
Baltimore
$137
Minneapolis
$107
Atlanta
$98
Orlando
$137
New Orleans
$137
Phoenix
$153
Salt Lake City
$138
Trenton
$42
Denver
$98
Philadelphia
$42
Houston
only $137
only $137
Boston
$147
Destination

Chicago
$42