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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: Sat Mar 7 2015 Return: Sun Mar 8 2015 Trip spans 1 days
American Airlines
American Airlines
ONT
7:40a
ORD
3:45p
8h 05m
1 stop
ORD
3:00a
ONT
9:34a
6h 34m
1 stop
Depart: Fri May 1 2015 Return: Mon May 4 2015 Trip spans 4 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: Wed Apr 15 2015 Return: Sat Apr 18 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Sat Apr 18 2015 Return: Thu Apr 23 2015 Trip spans 6 days
American Airlines
American Airlines
ONT
2:05a
ORD
10:20a
8h 15m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
2:05a
ORD
10:20a
8h 15m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Sat May 2 2015 Return: Mon May 4 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
8:40a
ORD
2:36p
5h 56m
1 stop
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
Depart: Mon May 4 2015 Return: Fri May 8 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
1:00a
ONT
9:31a
8h 31m
1 stop
Depart: Tue May 5 2015 Return: Tue May 12 2015 Trip spans 8 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:36p
6h 01m
1 stop
ORD
3:01a
ONT
11:27a
8h 26m
1 stop
Depart: Wed May 6 2015 Return: Mon May 11 2015 Trip spans 6 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:36p
6h 01m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Fri May 8 2015 Return: Tue May 12 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
8:59p
ORD
3:57a
6h 58m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Sat May 9 2015 Return: Tue May 12 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
2:28a
ORD
8:49a
6h 21m
1 stop
ORD
1:05p
ONT
9:08p
8h 03m
1 stop
Depart: Sat May 16 2015 Return: Mon May 18 2015 Trip spans 3 days
US Airways
US Airways
ONT
12:41p
ORD
6:01p
5h 20m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Fri Apr 17 2015 Return: Wed Apr 22 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
4:39p
ORD
10:38p
5h 59m
1 stop
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
Depart: Wed Apr 22 2015 Return: Sun Apr 26 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
6:55a
ORD
2:06p
7h 11m
1 stop
ORD
1:00a
ONT
7:05a
6h 05m
1 stop
Depart: Thu Apr 23 2015 Return: Sun Apr 26 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
ORD
1:00a
ONT
7:05a
6h 05m
1 stop
Depart: Wed Mar 11 2015 Return: Tue Mar 17 2015 Trip spans 7 days
United
United
ONT
5:10a
ORD
12:04p
6h 54m
1 stop
ORD
2:00a
ONT
9:10a
7h 10m
1 stop
Depart: Tue Mar 10 2015 Return: Wed Mar 11 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
2:30a
ORD
8:46a
6h 16m
1 stop
ORD
3:30a
ONT
12:14p
8h 44m
1 stop
Depart: Tue Mar 17 2015 Return: Tue Mar 31 2015 Trip spans 15 days
American Airlines
American Airlines
ONT
8:30a
ORD
3:57p
7h 27m
1 stop
ORD
1:45p
ONT
9:22p
7h 37m
1 stop
Depart: Wed Mar 18 2015 Return: Tue Mar 31 2015 Trip spans 14 days
American Airlines
American Airlines
ONT
10:55a
ORD
4:52p
5h 57m
1 stop
ORD
1:00a
ONT
8:07a
7h 07m
1 stop
Depart: Tue Sep 1 2015 Return: Sat Sep 5 2015 Trip spans 5 days
Delta
Delta
ONT
2:05a
ORD
9:04a
6h 59m
1 stop
ORD
9:35a
ONT
3:39p
6h 04m
1 stop
Change your search
Airports
Origin

Ontario
$281
Destination

Chicago
$281