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Find Deals on Flights from Ontario to Chicago O'Hare International (ONT - ORD)

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

Book cheap flights from Ontario to Chicago O'Hare International

(Round-trip)
Depart: Sun Sep 13 2015 Return: Mon Sep 14 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Mon Sep 14 2015 Return: Tue Sep 15 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Fri Sep 18 2015 Return: Sat Sep 19 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Sat Sep 19 2015 Return: Sun Sep 20 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Sun Sep 20 2015 Return: Mon Sep 21 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Tue Aug 4 2015 Return: Thu Aug 20 2015 Trip spans 17 days
United
United
ONT
9:59a
ORD
7:28p
9h 29m
1 stop
ORD
2:00a
ONT
9:58a
7h 58m
1 stop
Depart: Tue Sep 1 2015 Return: Mon Sep 14 2015 Trip spans 14 days
Delta
Delta
ONT
2:05a
ORD
9:04a
6h 59m
1 stop
ORD
12:40p
ONT
8:26p
7h 46m
1 stop
Depart: Sat Sep 12 2015 Return: Sun Sep 13 2015 Trip spans 2 days
US Airways
US Airways
ONT
2:28a
ORD
8:49a
6h 21m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Tue Aug 11 2015 Return: Wed Aug 12 2015 Trip spans 2 days
United
United
ONT
9:59a
ORD
7:28p
9h 29m
1 stop
ORD
2:00a
ONT
11:29a
9h 29m
1 stop
Depart: Wed Aug 19 2015 Return: Tue Aug 25 2015 Trip spans 7 days
United
United
ONT
1:20p
ORD
7:09p
5h 49m
1 stop
ORD
7:20a
ONT
2:48p
7h 28m
1 stop
Depart: Sat Aug 22 2015 Return: Sun Aug 23 2015 Trip spans 2 days
American Airlines
American Airlines
ONT
12:40p
ORD
6:12p
5h 32m
1 stop
ORD
1:10a
ONT
7:04a
5h 54m
1 stop
Depart: Mon Aug 24 2015 Return: Wed Sep 9 2015 Trip spans 17 days
American Airlines
American Airlines
ONT
12:40p
ORD
6:12p
5h 32m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Tue Aug 25 2015 Return: Sat Aug 29 2015 Trip spans 5 days
United
United
ONT
8:30a
ORD
3:49p
7h 19m
1 stop
ORD
9:45a
ONT
4:33p
6h 48m
1 stop
Depart: Wed Aug 26 2015 Return: Sun Aug 30 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
2:25a
ORD
10:00a
7h 35m
1 stop
ORD
1:10a
ONT
7:04a
5h 54m
1 stop
Depart: Wed Sep 2 2015 Return: Sun Sep 6 2015 Trip spans 5 days
United
United
ONT
1:20p
ORD
7:09p
5h 49m
1 stop
ORD
7:20a
ONT
2:48p
7h 28m
1 stop
Depart: Sun Sep 6 2015 Return: Sat Sep 12 2015 Trip spans 7 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
9:31a
8h 31m
1 stop
Depart: Thu Sep 10 2015 Return: Fri Sep 11 2015 Trip spans 2 days
United
United
ONT
11:10a
ORD
7:09p
7h 59m
1 stop
ORD
3:00a
ONT
9:58a
6h 58m
1 stop
Depart: Fri Sep 11 2015 Return: Sat Sep 12 2015 Trip spans 2 days
United
United
ONT
11:10a
ORD
7:09p
7h 59m
1 stop
ORD
3:00a
ONT
12:38p
9h 38m
1 stop
Depart: Wed Sep 16 2015 Return: Sun Sep 20 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Depart: Thu Sep 17 2015 Return: Sun Sep 20 2015 Trip spans 4 days
American Airlines
American Airlines
ONT
3:30p
ORD
9:08p
5h 38m
1 stop
ORD
1:00a
ONT
7:03a
6h 03m
1 stop
Airports
Origin

Ontario
$328
Destination

Chicago
$328