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Find Deals on Flights from Ontario to Chicago O'Hare International (ONT - ORD)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Ontario to Chicago O'Hare International

(Round-trip)
Depart: Wed Aug 19 2015 Return: Tue Aug 25 2015 Trip spans 7 days
American Airlines
American Airlines
ONT
10:15a
ORD
6:31p
8h 16m
1 stop
ORD
12:49p
ONT
8:58p
8h 09m
1 stop
Depart: Sat Sep 5 2015 Return: Sun Sep 6 2015 Trip spans 2 days
US Airways
US Airways
ONT
8:35a
ORD
2:53p
6h 18m
1 stop
ORD
3:10a
ONT
9:31a
6h 21m
1 stop
Depart: Wed Aug 26 2015 Return: Sat Aug 29 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
10:15a
ORD
6:31p
8h 16m
1 stop
ORD
2:45a
ONT
11:32a
8h 47m
1 stop
Depart: Sat Aug 29 2015 Return: Sat Sep 5 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
5:13a
ORD
12:13p
7h 00m
1 stop
ORD
1:10a
ONT
7:05a
5h 55m
1 stop
Depart: Mon Aug 31 2015 Return: Thu Sep 3 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
12:40p
ORD
6:12p
5h 32m
1 stop
ORD
1:10a
ONT
7:04a
5h 54m
1 stop
Depart: Tue Sep 1 2015 Return: Tue Sep 8 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
10:15a
ORD
4:44p
6h 29m
1 stop
ORD
9:30a
ONT
4:08p
6h 38m
1 stop
Depart: Wed Sep 2 2015 Return: Tue Sep 8 2015 Trip spans 7 days
American Airlines
American Airlines
ONT
10:15a
ORD
4:44p
6h 29m
1 stop
ORD
9:30a
ONT
5:49p
8h 19m
1 stop
Depart: Sun Sep 6 2015 Return: Tue Sep 8 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
12:40p
ORD
6:12p
5h 32m
1 stop
ORD
2:25p
ONT
8:58p
6h 33m
1 stop
Depart: Wed Sep 9 2015 Return: Fri Sep 18 2015 Trip spans 10 days
US Airways
US Airways
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
1:05a
ONT
7:08a
6h 03m
1 stop
Depart: Fri Sep 11 2015 Return: Sun Sep 13 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
1:00a
ONT
8:12a
7h 12m
1 stop
Depart: Sat Sep 12 2015 Return: Sun Sep 13 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
6:57a
ORD
1:55p
6h 58m
1 stop
ORD
1:00a
ONT
8:12a
7h 12m
1 stop
Depart: Tue Sep 15 2015 Return: Sun Sep 20 2015 Trip spans 6 days
American Airlines
American Airlines
ONT
10:23a
ORD
6:28p
8h 05m
1 stop
ORD
1:00a
ONT
8:12a
7h 12m
1 stop
Depart: Wed Sep 16 2015 Return: Sat Sep 19 2015 Trip spans 4 days
US Airways
US Airways
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
3:10a
ONT
9:33a
6h 23m
1 stop
Depart: Sat Sep 19 2015 Return: Mon Sep 21 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
5:15a
ORD
12:16p
7h 01m
1 stop
ORD
11:30a
ONT
6:57p
7h 27m
1 stop
Depart: Tue Sep 22 2015 Return: Fri Sep 25 2015 Trip spans 4 days
US Airways
US Airways
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
1:05a
ONT
7:08a
6h 03m
1 stop
Depart: Wed Sep 23 2015 Return: Sun Sep 27 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
1:00a
ONT
8:12a
7h 12m
1 stop
Depart: Fri Sep 25 2015 Return: Sun Sep 27 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
ORD
1:00a
ONT
8:12a
7h 12m
1 stop
Depart: Sat Sep 26 2015 Return: Tue Sep 29 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
6:57a
ORD
1:55p
6h 58m
1 stop
ORD
1:05a
ONT
7:08a
6h 03m
1 stop
Depart: Tue Aug 25 2015 Return: Sat Aug 29 2015 Trip spans 5 days
United
United
ONT
8:44a
ORD
3:36p
6h 52m
1 stop
ORD
5:29a
ONT
2:32p
9h 03m
1 stop
Depart: Thu Oct 1 2015 Return: Sat Oct 3 2015 Trip spans 3 days
Delta
Delta
ONT
2:15a
ORD
9:27a
7h 12m
1 stop
ORD
12:54p
ONT
7:06p
6h 12m
1 stop
Airports
Origin

Ontario
$267
Destination

Chicago
$267