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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: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
10:30a
ONT
7:06p
8h 36m
2 stops
Depart: Wed May 6 2015 Return: Sat May 9 2015 Trip spans 4 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
3:40a
ONT
4:05p
12h 25m
2 stops
Depart: Tue Apr 28 2015 Return: Tue May 5 2015 Trip spans 8 days
Delta
Delta
ONT
2:15a
ORD
9:28a
7h 13m
1 stop
ORD
2:35p
ONT
8:43p
6h 08m
1 stop
Depart: Sat May 23 2015 Return: Wed May 27 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
12:59p
ONT
7:06p
6h 07m
1 stop
Depart: Wed Apr 15 2015 Return: Tue Apr 21 2015 Trip spans 7 days
Delta
Delta
ONT
6:05a
ORD
4:02p
9h 57m
2 stops
ORD
2:34p
ONT
8:46p
6h 12m
1 stop
Depart: Fri May 8 2015 Return: Sat May 9 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: Mon May 11 2015 Return: Tue May 12 2015 Trip spans 2 days
United
United
ONT
3:17p
ORD
10:47p
7h 30m
1 stop
ORD
2:57a
ONT
10:17a
7h 20m
1 stop
Depart: Tue Apr 7 2015 Return: Wed Apr 8 2015 Trip spans 2 days
United
United
ONT
1:53p
ORD
11:20p
9h 27m
1 stop
ORD
4:08a
ONT
11:36a
7h 28m
1 stop
Depart: Sat Apr 18 2015 Return: Tue Apr 28 2015 Trip spans 11 days
American Airlines
American Airlines
ONT
8:40a
ORD
2:36p
5h 56m
1 stop
ORD
1:00a
ONT
8:07a
7h 07m
1 stop
Depart: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
ORD
1:00p
ONT
7:06p
6h 06m
1 stop
Depart: Mon May 4 2015 Return: Tue May 5 2015 Trip spans 2 days
United
United
ONT
3:18p
ORD
11:04p
7h 46m
1 stop
ORD
4:08a
ONT
11:36a
7h 28m
1 stop
Depart: Wed Apr 8 2015 Return: Thu Apr 9 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
6:55a
ORD
1:43p
6h 48m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Tue Apr 14 2015 Return: Sat Apr 18 2015 Trip spans 5 days
United
United
ONT
3:18p
ORD
12:43a
9h 25m
1 stop
ORD
4:45a
ONT
11:34a
6h 49m
1 stop
Depart: Fri Apr 17 2015 Return: Sat Apr 18 2015 Trip spans 2 days
United
United
ONT
10:06a
ORD
6:15p
8h 09m
1 stop
ORD
4:45a
ONT
11:34a
6h 49m
1 stop
Depart: Tue Apr 21 2015 Return: Thu Apr 23 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: Thu Apr 23 2015 Return: Sun Apr 26 2015 Trip spans 4 days
United
United
ONT
3:18p
ORD
12:43a
9h 25m
1 stop
ORD
2:53a
ONT
11:36a
8h 43m
1 stop
Depart: Fri Apr 24 2015 Return: Sun Apr 26 2015 Trip spans 3 days
United
United
ONT
10:06a
ORD
6:15p
8h 09m
1 stop
ORD
2:53a
ONT
11:36a
8h 43m
1 stop
Depart: Sun Apr 26 2015 Return: Wed Apr 29 2015 Trip spans 4 days
United
United
ONT
4:49p
ORD
12:43a
7h 54m
1 stop
ORD
8:20a
ONT
4:47p
8h 27m
1 stop
Depart: Mon Apr 27 2015 Return: Wed Apr 29 2015 Trip spans 3 days
United
United
ONT
4:39p
ORD
12:41a
8h 02m
1 stop
ORD
7:20a
ONT
4:47p
9h 27m
1 stop
Depart: Wed Apr 29 2015 Return: Fri May 1 2015 Trip spans 3 days
United
United
ONT
9:30a
ORD
3:24p
5h 54m
1 stop
ORD
2:45p
ONT
10:09p
7h 24m
1 stop
Airports
Origin

Ontario
$309
Destination

Chicago
$309