Find Deals on Flights from Chicago to Ontario (CHI - ONT)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youth
12-17
Child
2-11
Seat Infant
under 2
Lap Infant
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights from Chicago to Ontario

(Round-trip)
Depart: Wed Sep 23 2015 Return: Tue Sep 29 2015 Trip spans 7 days
United
United
ORD
7:29a
ONT
4:31p
9h 02m
1 stop
ONT
6:27a
ORD
1:12p
6h 45m
1 stop
Depart: Sat Sep 26 2015 Return: Tue Oct 6 2015 Trip spans 11 days
United
United
ORD
1:41p
ONT
10:29p
8h 48m
1 stop
ONT
3:00p
ORD
10:45p
7h 45m
1 stop
Depart: Tue Sep 29 2015 Return: Tue Oct 6 2015 Trip spans 8 days
United
United
ORD
1:15a
ONT
8:43a
7h 28m
1 stop
ONT
4:57p
ORD
11:20p
6h 23m
1 stop
Depart: Tue Oct 20 2015 Return: Wed Oct 21 2015 Trip spans 2 days
United
United
ORD
6:42a
ONT
4:30p
9h 48m
1 stop
ONT
2:01p
ORD
10:45p
8h 44m
1 stop
Depart: Tue Oct 27 2015 Return: Wed Nov 4 2015 Trip spans 9 days
United
United
ORD
5:55a
ONT
3:30p
9h 35m
1 stop
ONT
7:42a
ORD
5:13p
9h 31m
1 stop
Depart: Wed Nov 4 2015 Return: Tue Nov 17 2015 Trip spans 14 days
United
United
ORD
2:20p
ONT
9:35p
7h 15m
1 stop
ONT
4:07p
ORD
10:20p
6h 13m
1 stop
Depart: Tue Nov 10 2015 Return: Tue Nov 17 2015 Trip spans 8 days
United
United
ORD
4:55a
ONT
12:01p
7h 06m
1 stop
ONT
4:07p
ORD
10:20p
6h 13m
1 stop
Depart: Tue Sep 15 2015 Return: Tue Sep 22 2015 Trip spans 8 days
United
United
ORD
6:47a
ONT
3:27p
8h 40m
1 stop
ONT
6:24a
ORD
3:36p
9h 12m
1 stop
Depart: Wed Sep 16 2015 Return: Wed Sep 23 2015 Trip spans 8 days
United
United
ORD
10:29a
ONT
6:37p
8h 08m
1 stop
ONT
4:46a
ORD
1:13p
8h 27m
1 stop
Depart: Wed Sep 30 2015 Return: Mon Oct 5 2015 Trip spans 6 days
United
United
ORD
1:15a
ONT
8:43a
7h 28m
1 stop
ONT
3:00p
ORD
11:20p
8h 20m
1 stop
Depart: Mon Oct 26 2015 Return: Sat Nov 7 2015 Trip spans 13 days
United
United
ORD
2:28p
ONT
10:35p
8h 07m
1 stop
ONT
12:30a
ORD
7:53a
7h 23m
1 stop
Depart: Sat Oct 31 2015 Return: Mon Nov 9 2015 Trip spans 10 days
United
United
ORD
11:11a
ONT
6:37p
7h 26m
1 stop
ONT
4:07p
ORD
11:32p
7h 25m
1 stop
Depart: Tue Nov 3 2015 Return: Fri Nov 6 2015 Trip spans 4 days
United
United
ORD
10:11a
ONT
5:37p
7h 26m
1 stop
ONT
1:58p
ORD
9:29p
7h 31m
1 stop
Depart: Wed Nov 11 2015 Return: Mon Nov 16 2015 Trip spans 6 days
United
United
ORD
7:39a
ONT
2:30p
6h 51m
1 stop
ONT
4:07p
ORD
10:20p
6h 13m
1 stop
Depart: Tue Nov 17 2015 Return: Wed Dec 2 2015 Trip spans 16 days
United
United
ORD
3:06a
ONT
12:01p
8h 55m
1 stop
ONT
12:03p
ORD
6:14p
6h 11m
1 stop
Depart: Thu Sep 17 2015 Return: Sat Oct 3 2015 Trip spans 17 days
American Airlines
American Airlines
ORD
1:05a
ONT
7:08a
6h 03m
1 stop
ONT
8:35a
ORD
2:49p
6h 14m
1 stop
Depart: Sat Sep 19 2015 Return: Sat Oct 3 2015 Trip spans 15 days
US Airways
US Airways
ORD
1:05a
ONT
7:07a
6h 02m
1 stop
ONT
6:00a
ORD
1:01p
7h 01m
1 stop
Depart: Fri Sep 25 2015 Return: Sat Sep 26 2015 Trip spans 2 days
Delta
Delta
ORD
12:15p
ONT
8:31p
8h 16m
1 stop
ONT
2:15a
ORD
9:22a
7h 07m
1 stop
Depart: Thu Jan 14 2016 Return: Mon Jan 18 2016 Trip spans 5 days
Southwest
Southwest
MDW
12:30a
ONT
7:15a
6h 45m
1 stop
ONT
11:15a
MDW
4:15p
5h 00m
1 stop
Depart: Tue Mar 1 2016 Return: Thu Mar 31 2016 Trip spans 30 days
Delta
Delta
MDW
10:10a
ONT
7:26p
9h 16m
2 stops
ONT
2:05a
MDW
11:38a
9h 33m
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
2946 8:25 am 10:40 am Sep 1 - Sep 11
2946 8:25 am 10:40 am Sep 13 - Sep 25
2946 8:25 am 10:45 am Sep 27 - Oct 30
4150 9:20 am 11:40 am Oct 3 - Oct 24
4150 9:20 am 11:35 am Sep 12 - Sep 26
Airports
Origin

Chicago
only $171
only $280
Destination

Ontario
$171