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Find Flight Deals 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: Tue Jun 2 2015 Return: Wed Jun 3 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
3:00a
ONT
9:33a
6h 33m
1 stop
Depart: Sat May 9 2015 Return: Sun May 10 2015 Trip spans 2 days
US Airways
US Airways
ONT
6:00a
ORD
11:59a
5h 59m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Sat Apr 25 2015 Return: Wed May 27 2015 Trip spans 33 days
American Airlines
American Airlines
ONT
8:40a
ORD
2:46p
6h 06m
1 stop
ORD
6:25p
ONT
8:05a
13h 40m
1 stop
Depart: Fri May 8 2015 Return: Sun May 10 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
1:00a
ONT
7:05a
6h 05m
1 stop
Depart: Sun May 10 2015 Return: Wed May 13 2015 Trip spans 4 days
US Airways
US Airways
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
10:05a
ONT
4:05p
6h 00m
1 stop
Depart: Mon May 11 2015 Return: Tue May 12 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
3:00a
ONT
9:33a
6h 33m
1 stop
Depart: Tue May 12 2015 Return: Wed May 13 2015 Trip spans 2 days
US Airways
US Airways
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
ORD
3:00a
ONT
9:33a
6h 33m
1 stop
Depart: Wed May 13 2015 Return: Fri May 15 2015 Trip spans 3 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Sat May 16 2015 Return: Tue May 19 2015 Trip spans 4 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Mon May 18 2015 Return: Sun May 31 2015 Trip spans 14 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
1:00a
ONT
8:05a
7h 05m
1 stop
Depart: Tue May 19 2015 Return: Tue Jun 2 2015 Trip spans 15 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
3:42a
ONT
9:33a
5h 51m
1 stop
Depart: Sat May 23 2015 Return: Wed May 27 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Fri May 29 2015 Return: Sun May 31 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
10:20a
ORD
5:02p
6h 42m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Sat May 30 2015 Return: Wed Jun 3 2015 Trip spans 5 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Mon Jun 1 2015 Return: Thu Jun 4 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
4:05p
ONT
9:57p
5h 52m
1 stop
Depart: Fri Apr 24 2015 Return: Fri May 8 2015 Trip spans 15 days
US Airways
US Airways
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Tue Apr 28 2015 Return: Fri May 8 2015 Trip spans 11 days
US Airways
US Airways
ONT
12:40p
ORD
6:02p
5h 22m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Wed Apr 29 2015 Return: Fri May 8 2015 Trip spans 10 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Tue Sep 1 2015 Return: Wed Sep 2 2015 Trip spans 2 days
Delta
Delta
ONT
2:15p
ORD
4:50a
14h 35m
2 stops
ORD
9:35a
ONT
3:39p
6h 04m
1 stop
Depart: Sun Apr 26 2015 Return: Mon Apr 27 2015 Trip spans 2 days
United
United
ONT
4:49p
ORD
12:43a
7h 54m
1 stop
ORD
9:06a
ONT
6:09p
9h 03m
1 stop
Airports
Origin

Ontario
$306
Destination

Chicago
$306