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Find Flight Deals from Chicago to Ontario (CHI - ONT)

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

Book cheap flights from Chicago to Ontario

(Round-trip)
Depart: Fri May 29 2015 Return: Wed Jun 3 2015 Trip spans 6 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Sat May 30 2015 Return: Wed Jun 3 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
1:10p
ONT
7:06p
5h 56m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Sun May 31 2015 Return: Wed Jun 3 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:05a
6h 05m
1 stop
ONT
10:20a
ORD
5:02p
6h 42m
1 stop
Depart: Mon May 11 2015 Return: Tue May 12 2015 Trip spans 2 days
US Airways
US Airways
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Tue May 12 2015 Return: Sat May 16 2015 Trip spans 5 days
US Airways
US Airways
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 days
US Airways
US Airways
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Thu May 14 2015 Return: Sat May 16 2015 Trip spans 3 days
US Airways
US Airways
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Fri May 15 2015 Return: Sat May 16 2015 Trip spans 2 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
10:20a
ORD
5:02p
6h 42m
1 stop
Depart: Sat May 16 2015 Return: Sat May 23 2015 Trip spans 8 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Tue May 19 2015 Return: Sat May 23 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Wed May 20 2015 Return: Sat May 23 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Sun May 24 2015 Return: Sat May 30 2015 Trip spans 7 days
US Airways
US Airways
ORD
8:10a
ONT
4:05p
7h 55m
1 stop
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
Depart: Wed May 27 2015 Return: Sat May 30 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Thu May 28 2015 Return: Sun May 31 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
Depart: Tue Jun 2 2015 Return: Sat Jun 6 2015 Trip spans 5 days
US Airways
US Airways
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
5:45p
ORD
11:25p
5h 40m
1 stop
Depart: Wed Jun 3 2015 Return: Sat Jun 6 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
3:25p
ORD
11:25p
8h 00m
1 stop
Depart: Mon May 4 2015 Return: Tue May 12 2015 Trip spans 9 days
Delta
Delta
ORD
2:35p
ONT
8:43p
6h 08m
1 stop
ONT
6:05a
ORD
11:55a
5h 50m
1 stop
Depart: Tue Apr 28 2015 Return: Tue May 12 2015 Trip spans 15 days
American Airlines
American Airlines
ORD
1:45p
ONT
9:20p
7h 35m
1 stop
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
Depart: Wed Apr 29 2015 Return: Tue May 12 2015 Trip spans 14 days
American Airlines
American Airlines
ORD
3:42a
ONT
9:33a
5h 51m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Tue Jun 30 2015 Return: Tue Jul 7 2015 Trip spans 8 days
United
United
ORD
2:08a
ONT
10:14a
8h 06m
1 stop
ONT
1:08p
ORD
7:26p
6h 18m
1 stop
Select an airline:  Southwest
Direct flights CHI to ONT on Southwest
Flight # Depart MDW Arrive ONT Sun Mon Tue Wed Thu Fri Sat Valid Between
4752 5:45 pm 8:05 pm Apr 8 - Jun 5
Airports
Origin

Chicago
$306
Destination

Ontario
$306