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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 May 12 2015 Return: Wed May 13 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
3:20a
ONT
11:34a
8h 14m
1 stop
Depart: Tue Apr 14 2015 Return: Sat Apr 18 2015 Trip spans 5 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: Wed Apr 1 2015 Return: Tue Apr 7 2015 Trip spans 7 days
American Airlines
American Airlines
ONT
2:05a
ORD
9:24a
7h 19m
1 stop
ORD
1:45p
ONT
9:22p
7h 37m
1 stop
Depart: Wed Apr 8 2015 Return: Sat Apr 11 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
2:05a
ORD
9:24a
7h 19m
1 stop
ORD
1:45p
ONT
9:22p
7h 37m
1 stop
Depart: Sat May 2 2015 Return: Sat May 9 2015 Trip spans 8 days
US Airways
US Airways
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
ORD
10:05a
ONT
4:05p
6h 00m
1 stop
Depart: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Sat May 16 2015 Return: Tue May 19 2015 Trip spans 4 days
US Airways
US Airways
ONT
6:00a
ORD
11:59a
5h 59m
1 stop
ORD
1:10p
ONT
7:06p
5h 56m
1 stop
Depart: Wed Apr 15 2015 Return: Mon Apr 20 2015 Trip spans 6 days
American Airlines
American Airlines
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Sat Apr 18 2015 Return: Mon Apr 20 2015 Trip spans 3 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: Tue Apr 21 2015 Return: Mon Apr 27 2015 Trip spans 7 days
US Airways
US Airways
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Wed May 27 2015 Return: Tue Jun 2 2015 Trip spans 7 days
Delta
Delta
ONT
6:05a
ORD
11:55a
5h 50m
1 stop
ORD
2:35p
ONT
8:43p
6h 08m
1 stop
Depart: Sat May 9 2015 Return: Mon May 11 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
ORD
12:59p
ONT
7:06p
6h 07m
1 stop
Depart: Mon May 11 2015 Return: Wed May 13 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
3:20a
ONT
11:34a
8h 14m
1 stop
Depart: Tue Mar 17 2015 Return: Tue Mar 31 2015 Trip spans 15 days
American Airlines
American Airlines
ONT
10:55a
ORD
4:52p
5h 57m
1 stop
ORD
2:10p
ONT
9:22p
7h 12m
1 stop
Depart: Tue Mar 24 2015 Return: Tue Mar 31 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
12:40p
ORD
6:02p
5h 22m
1 stop
ORD
1:00a
ONT
8:07a
7h 07m
1 stop
Depart: Tue Mar 31 2015 Return: Sat Apr 11 2015 Trip spans 12 days
Delta
Delta
ONT
2:15a
ORD
9:28a
7h 13m
1 stop
ORD
2:34p
ONT
8:45p
6h 11m
1 stop
Depart: Tue May 19 2015 Return: Tue Jun 2 2015 Trip spans 15 days
Delta
Delta
ONT
6:05a
ORD
11:55a
5h 50m
1 stop
ORD
2:35p
ONT
8:43p
6h 08m
1 stop
Depart: Tue Apr 28 2015 Return: Fri May 1 2015 Trip spans 4 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: Fri Apr 17 2015 Return: Sat Apr 18 2015 Trip spans 2 days
United
United
ONT
3:18p
ORD
10:38p
7h 20m
1 stop
ORD
2:59a
ONT
11:34a
8h 35m
1 stop
Depart: Thu Sep 3 2015 Return: Tue Sep 8 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
2:00a
ONT
9:58a
7h 58m
1 stop
Airports
Origin

Ontario
$266
Destination

Chicago
$266