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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: Wed Feb 18 2015 Return: Tue Mar 3 2015 Trip spans 14 days
US Airways
US Airways
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Tue Feb 24 2015 Return: Tue Mar 3 2015 Trip spans 8 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Wed Feb 25 2015 Return: Tue Mar 3 2015 Trip spans 7 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Tue Mar 3 2015 Return: Wed Mar 4 2015 Trip spans 2 days
US Airways
US Airways
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
7:40a
ORD
5:02p
9h 22m
1 stop
Depart: Sat Feb 28 2015 Return: Tue Mar 3 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Wed Mar 4 2015 Return: Sat Mar 7 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:55a
ORD
5:02p
5h 07m
1 stop
Depart: Sat Feb 21 2015 Return: Tue Mar 3 2015 Trip spans 11 days
American Airlines
American Airlines
ORD
12:05p
ONT
6:11p
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Mon Feb 23 2015 Return: Tue Mar 3 2015 Trip spans 9 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Mon Mar 2 2015 Return: Tue Mar 3 2015 Trip spans 2 days
US Airways
US Airways
ORD
12:00a
ONT
8:34a
8h 34m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Sun Feb 22 2015 Return: Wed Feb 25 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
7:40a
ORD
5:02p
9h 22m
1 stop
Depart: Thu Mar 5 2015 Return: Sat Mar 7 2015 Trip spans 3 days
American Airlines
American Airlines
ORD
12:00a
ONT
6:06a
6h 06m
1 stop
ONT
11:55a
ORD
5:02p
5h 07m
1 stop
Depart: Sat Mar 7 2015 Return: Thu Mar 12 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
12:00a
ONT
8:34a
8h 34m
1 stop
ONT
5:56p
ORD
11:18p
5h 22m
1 stop
Depart: Sat Mar 14 2015 Return: Thu Mar 19 2015 Trip spans 6 days
American Airlines
American Airlines
ORD
1:00a
ONT
7:08a
6h 08m
1 stop
ONT
5:56p
ORD
11:18p
5h 22m
1 stop
Depart: Sat Feb 14 2015 Return: Wed Feb 18 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
8:28a
ONT
3:53p
7h 25m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Tue Feb 17 2015 Return: Tue Feb 24 2015 Trip spans 8 days
American Airlines
American Airlines
ORD
12:05p
ONT
6:11p
6h 06m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Mon Mar 9 2015 Return: Thu Mar 12 2015 Trip spans 4 days
US Airways
US Airways
ORD
1:00a
ONT
7:06a
6h 06m
1 stop
ONT
5:56p
ORD
11:18p
5h 22m
1 stop
Depart: Sun Mar 1 2015 Return: Tue Mar 3 2015 Trip spans 3 days
American Airlines
American Airlines
ORD
1:45p
ONT
8:16p
6h 31m
1 stop
ONT
11:40a
ORD
5:02p
5h 22m
1 stop
Depart: Thu Feb 19 2015 Return: Tue Feb 24 2015 Trip spans 6 days
Delta
Delta
ORD
8:00a
ONT
7:45p
11h 45m
2 stops
ONT
1:10a
ORD
8:29a
7h 19m
1 stop
Depart: Wed Feb 11 2015 Return: Tue Feb 17 2015 Trip spans 7 days
United
United
ORD
4:01a
ONT
11:21a
7h 20m
1 stop
ONT
3:55p
ORD
10:49p
6h 54m
1 stop
Depart: Fri Mar 13 2015 Return: Mon Apr 13 2015 Trip spans 32 days
Multiple Airlines
Multiple Airlines
ORD
1:00a
ONT
7:06a
6h 06m
1 stop
ONT
4:39p
ORD
10:50p
6h 11m
1 stop
Change your search
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
4639 8:40 am 11:05 am Feb 6 - Feb 8
4639 8:40 am 11:05 am Feb 15 - Mar 1
4639 8:40 am 11:05 am Feb 9 - Mar 6
277 2:45 pm 5:05 pm Mar 8 - Apr 6
316 5:30 pm 7:50 pm Mar 7 - Mar 7
528 6:30 pm 8:55 pm Jan 31 - Feb 28
Airports
Origin

Chicago
$247
Destination

Ontario
$247