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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: Tue Mar 31 2015 Return: Tue Apr 14 2015 Trip spans 15 days
American Airlines
American Airlines
ORD
1:00a
ONT
8:07a
7h 07m
1 stop
ONT
12:40p
ORD
6:08p
5h 28m
1 stop
Depart: Sat Apr 25 2015 Return: Wed Apr 29 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 Apr 1 2015 Return: Tue Apr 14 2015 Trip spans 14 days
American Airlines
American Airlines
ORD
1:45p
ONT
9:22p
7h 37m
1 stop
ONT
10:20a
ORD
5:07p
6h 47m
1 stop
Depart: Tue Apr 7 2015 Return: Wed Apr 8 2015 Trip spans 2 days
American Airlines
American Airlines
ORD
2:10p
ONT
9:22p
7h 12m
1 stop
ONT
2:05a
ORD
9:24a
7h 19m
1 stop
Depart: Wed Apr 8 2015 Return: Sat Apr 18 2015 Trip spans 11 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 Apr 14 2015 Return: Sat Apr 18 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
12:55p
ONT
7:06p
6h 11m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Wed Apr 15 2015 Return: Sat Apr 18 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
10:20a
ORD
6:06p
7h 46m
1 stop
Depart: Sat May 9 2015 Return: Sat May 16 2015 Trip spans 8 days
US Airways
US Airways
ORD
1:10p
ONT
7:06p
5h 56m
1 stop
ONT
6:00a
ORD
11:59a
5h 59m
1 stop
Depart: Wed May 13 2015 Return: Sat May 16 2015 Trip spans 4 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: Mon Apr 13 2015 Return: Tue Apr 14 2015 Trip spans 2 days
American Airlines
American Airlines
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
8:35a
ORD
2:46p
6h 11m
1 stop
Depart: Thu Apr 16 2015 Return: Tue Apr 21 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: Mon May 4 2015 Return: Tue May 19 2015 Trip spans 16 days
American Airlines
American Airlines
ORD
1:00p
ONT
7:06p
6h 06m
1 stop
ONT
8:35a
ORD
2:36p
6h 01m
1 stop
Depart: Wed May 6 2015 Return: Mon May 11 2015 Trip spans 6 days
American Airlines
American Airlines
ORD
1:00a
ONT
9:33a
8h 33m
1 stop
ONT
3:25p
ORD
11:22p
7h 57m
1 stop
Depart: Mon May 11 2015 Return: Sat May 16 2015 Trip spans 6 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
Depart: Fri Apr 17 2015 Return: Tue Apr 21 2015 Trip spans 5 days
US Airways
US Airways
ORD
1:00a
ONT
7:07a
6h 07m
1 stop
ONT
2:30a
ORD
8:49a
6h 19m
1 stop
Depart: Tue Apr 21 2015 Return: Fri Apr 24 2015 Trip spans 4 days
United
United
ORD
3:25p
ONT
10:09p
6h 44m
1 stop
ONT
4:39p
ORD
10:38p
5h 59m
1 stop
Depart: Mon Mar 23 2015 Return: Tue Mar 31 2015 Trip spans 9 days
Delta
Delta
ORD
2:38p
ONT
8:34p
5h 56m
1 stop
ONT
2:15a
ORD
9:28a
7h 13m
1 stop
Depart: Wed Mar 18 2015 Return: Tue Mar 24 2015 Trip spans 7 days
Multiple Airlines
Multiple Airlines
ORD
3:30a
ONT
12:14p
8h 44m
1 stop
ONT
8:40a
ORD
4:45p
8h 05m
1 stop
Depart: Mon May 18 2015 Return: Wed May 20 2015 Trip spans 3 days
Delta
Delta
MDW
7:02a
ONT
8:37p
13h 35m
2 stops
ONT
2:15a
MDW
12:56p
10h 41m
2 stops
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
1024 2:45 pm 5:05 pm Apr 7 - Apr 7
277 2:45 pm 5:05 pm Mar 8 - Apr 6
2281 5:30 pm 7:50 pm Mar 14 - Apr 4
4752 5:45 pm 8:05 pm Apr 8 - Jun 5
Airports
Origin

Chicago
only $271
only $653
Destination

Ontario
$271