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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: Sun Feb 1 2015 Return: Wed Feb 4 2015 Trip spans 4 days
Delta
Delta
ORD
11:30a
ONT
6:14p
6h 44m
1 stop
ONT
1:15a
ORD
8:27a
7h 12m
1 stop
Depart: Sat Jan 17 2015 Return: Thu Jan 22 2015 Trip spans 6 days
United
United
ORD
3:35a
ONT
9:44a
6h 09m
1 stop
ONT
9:51a
ORD
4:02p
6h 11m
1 stop
Depart: Sun Jan 18 2015 Return: Sat Jan 24 2015 Trip spans 7 days
US Airways
US Airways
ORD
12:00a
ONT
8:34a
8h 34m
1 stop
ONT
5:00a
ORD
10:56a
5h 56m
1 stop
Depart: Tue Jan 20 2015 Return: Thu Jan 22 2015 Trip spans 3 days
American Airlines
American Airlines
ORD
11:26a
ONT
8:21p
8h 55m
1 stop
ONT
9:55a
ORD
3:54p
5h 59m
1 stop
Depart: Mon Jan 19 2015 Return: Wed Jan 21 2015 Trip spans 3 days
Delta
Delta
ORD
1:39p
ONT
7:35p
5h 56m
1 stop
ONT
1:15a
ORD
8:27a
7h 12m
1 stop
Depart: Wed Jan 21 2015 Return: Fri Jan 23 2015 Trip spans 3 days
American Airlines
American Airlines
ORD
11:26a
ONT
8:21p
8h 55m
1 stop
ONT
9:55a
ORD
3:54p
5h 59m
1 stop
Depart: Thu Jan 22 2015 Return: Sun Jan 25 2015 Trip spans 4 days
United
United
ORD
2:01a
ONT
11:21a
9h 20m
1 stop
ONT
3:00p
ORD
10:18p
7h 18m
1 stop
Depart: Fri Jan 23 2015 Return: Sun Jan 25 2015 Trip spans 3 days
United
United
ORD
7:56a
ONT
2:43p
6h 47m
1 stop
ONT
3:00p
ORD
10:18p
7h 18m
1 stop
Depart: Sat Jan 24 2015 Return: Sat Jan 31 2015 Trip spans 8 days
American Airlines
American Airlines
ORD
11:26a
ONT
8:21p
8h 55m
1 stop
ONT
7:30a
ORD
2:57p
7h 27m
1 stop
Depart: Mon Jan 26 2015 Return: Thu Jan 29 2015 Trip spans 4 days
United
United
ORD
7:56a
ONT
2:43p
6h 47m
1 stop
ONT
3:00p
ORD
9:41p
6h 41m
1 stop
Depart: Tue Jan 27 2015 Return: Thu Jan 29 2015 Trip spans 3 days
United
United
ORD
1:03p
ONT
8:55p
7h 52m
1 stop
ONT
5:05a
ORD
12:10p
7h 05m
1 stop
Depart: Wed Jan 28 2015 Return: Wed Feb 4 2015 Trip spans 8 days
United
United
ORD
12:00p
ONT
8:55p
8h 55m
1 stop
ONT
9:51a
ORD
4:02p
6h 11m
1 stop
Depart: Thu Jan 29 2015 Return: Sun Feb 1 2015 Trip spans 4 days
United
United
ORD
5:39a
ONT
2:43p
9h 04m
1 stop
ONT
3:00p
ORD
10:18p
7h 18m
1 stop
Depart: Fri Jan 30 2015 Return: Sun Feb 1 2015 Trip spans 3 days
Delta
Delta
ORD
1:39p
ONT
7:35p
5h 56m
1 stop
ONT
1:15a
ORD
7:17a
6h 02m
1 stop
Depart: Sat Jan 31 2015 Return: Sun Feb 1 2015 Trip spans 2 days
Delta
Delta
ORD
8:40a
ONT
5:56p
9h 16m
1 stop
ONT
1:15a
ORD
7:17a
6h 02m
1 stop
Depart: Mon Feb 2 2015 Return: Sat Feb 7 2015 Trip spans 6 days
United
United
ORD
7:05a
ONT
4:30p
9h 25m
1 stop
ONT
3:00p
ORD
9:55p
6h 55m
1 stop
Depart: Tue Feb 3 2015 Return: Sat Feb 7 2015 Trip spans 5 days
American Airlines
American Airlines
ORD
1:30a
ONT
8:50a
7h 20m
1 stop
ONT
1:00a
ORD
8:34a
7h 34m
1 stop
Depart: Wed Feb 4 2015 Return: Sat Feb 7 2015 Trip spans 4 days
American Airlines
American Airlines
ORD
12:45a
ONT
8:50a
8h 05m
1 stop
ONT
1:00a
ORD
8:34a
7h 34m
1 stop
Depart: Fri Jan 2 2015 Return: Tue Jan 20 2015 Trip spans 19 days
Multiple Airlines
Multiple Airlines
ORD
11:35a
ONT
7:44p
8h 09m
1 stop
ONT
7:40a
ORD
1:36p
5h 56m
1 stop
Depart: Wed Apr 1 2015 Return: Tue Apr 7 2015 Trip spans 7 days
Delta
Delta
MDW
1:10p
ONT
8:26p
7h 16m
2 stops
ONT
2:05a
MDW
10:10a
8h 05m
2 stops
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 Jan 19 - Jan 29
4639 8:40 am 11:05 am Jan 23 - Jan 25
4639 8:40 am 11:05 am Jan 30 - Feb 5
4639 8:40 am 11:05 am Jan 11 - Jan 18
4639 8:40 am 11:05 am Jan 6 - Jan 12
545 8:40 am 11:05 am Feb 1 - Feb 1
528 6:30 pm 8:55 pm Jan 10 - Feb 28
990 8:10 pm 10:35 pm Jan 5 - Jan 5
990 8:15 pm 10:40 pm Dec 29 - Jan 4
Airports
Origin

Chicago
only $332
only $715
Destination

Ontario
$332