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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to Chicago O'Hare International

(Round-trip)
Depart: Tue Oct 18 2016 Return: Wed Oct 19 2016 Trip spans 2 days
United
United
ONT
8:42a
ORD
5:36p
8h 54m
1 stop
ORD
9:00a
ONT
5:04p
8h 04m
1 stop
Depart: Fri Oct 28 2016 Return: Wed Nov 2 2016 Trip spans 6 days
Major Airline
Major Airline
ONT
10:00p
ORD
1:16p
15h 16m
1 stop
ORD
12:00a
ONT
11:05a
11h 05m
1 stop
Depart: Tue Nov 8 2016 Return: Sun Nov 13 2016 Trip spans 6 days
American Airlines
American Airlines
ONT
11:30a
ORD
5:12p
5h 42m
1 stop
ORD
12:00a
ONT
6:04a
6h 04m
1 stop
Depart: Sun Nov 20 2016 Return: Mon Nov 21 2016 Trip spans 2 days
Delta
Delta
ONT
1:00a
ORD
7:18a
6h 18m
1 stop
ORD
11:25a
ONT
8:05p
8h 40m
1 stop
Depart: Sat Oct 22 2016 Return: Tue Oct 25 2016 Trip spans 4 days
United
United
ONT
1:33p
ORD
10:46p
9h 13m
1 stop
ORD
5:10a
ONT
3:03p
9h 53m
1 stop
Depart: Wed Oct 26 2016 Return: Sat Oct 29 2016 Trip spans 4 days
United
United
ONT
8:42a
ORD
4:16p
7h 34m
1 stop
ORD
1:47p
ONT
9:59p
8h 12m
1 stop
Depart: Sat Oct 29 2016 Return: Wed Nov 2 2016 Trip spans 5 days
United
United
ONT
8:42a
ORD
3:35p
6h 53m
1 stop
ORD
3:05a
ONT
10:13a
7h 08m
1 stop
Depart: Wed Oct 19 2016 Return: Sat Oct 22 2016 Trip spans 4 days
Major Airline
Major Airline
ONT
10:00p
ORD
8:35a
10h 35m
1 stop
ORD
10:00p
ONT
11:05a
13h 05m
1 stop
Depart: Tue Nov 1 2016 Return: Sat Nov 5 2016 Trip spans 5 days
United
United
ONT
1:45a
ORD
10:17a
8h 32m
1 stop
ORD
6:50a
ONT
5:00p
10h 10m
1 stop
Depart: Sat Oct 8 2016 Return: Tue Oct 11 2016 Trip spans 4 days
American Airlines
American Airlines
ONT
12:35p
ORD
6:32p
5h 57m
1 stop
ORD
1:00a
ONT
7:08a
6h 08m
1 stop
Depart: Wed Feb 1 2017 Return: Tue Feb 7 2017 Trip spans 7 days
Delta
Delta
ONT
1:00a
ORD
8:29a
7h 29m
1 stop
ORD
1:30p
ONT
7:40p
6h 10m
1 stop
Depart: Wed Nov 2 2016 Return: Sat Nov 5 2016 Trip spans 4 days
United
United
ONT
1:45a
ORD
10:17a
8h 32m
1 stop
ORD
1:45p
ONT
9:59p
8h 14m
1 stop
Depart: Sun Dec 25 2016 Return: Sat Dec 31 2016 Trip spans 7 days
Alaska Airlines
Alaska Airlines
ONT
1:00a
ORD
11:37a
10h 37m
1 stop
ORD
1:00a
ONT
7:48p
18h 48m
1 stop
Depart: Tue Jan 10 2017 Return: Sat Jan 14 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
5:00a
ORD
10:45a
5h 45m
1 stop
ORD
12:00a
ONT
6:03a
6h 03m
1 stop
Depart: Fri Feb 10 2017 Return: Mon Feb 13 2017 Trip spans 4 days
Delta
Delta
ONT
1:00a
ORD
8:29a
7h 29m
1 stop
ORD
1:30p
ONT
7:40p
6h 10m
1 stop
Depart: Sat Nov 5 2016 Return: Tue Nov 8 2016 Trip spans 4 days
United
United
ONT
1:45a
ORD
7:36a
5h 51m
1 stop
ORD
9:20a
ONT
5:52p
8h 32m
1 stop
Depart: Wed Jan 11 2017 Return: Sun Jan 15 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
11:41a
ORD
4:59p
5h 18m
1 stop
ORD
2:10a
ONT
8:31a
6h 21m
1 stop
Depart: Wed Nov 16 2016 Return: Fri Nov 25 2016 Trip spans 10 days
Major Airline
Major Airline
ONT
8:15a
ORD
6:45p
10h 30m
1 stop
ORD
4:05a
ONT
2:50p
10h 45m
1 stop
Depart: Wed Nov 9 2016 Return: Sat Nov 12 2016 Trip spans 4 days
United
United
ONT
8:33a
ORD
2:21p
5h 48m
1 stop
ORD
2:35a
ONT
9:42a
7h 07m
1 stop
Depart: Fri Jan 13 2017 Return: Mon Jan 16 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
1:28a
ORD
9:00a
7h 32m
1 stop
ORD
12:00a
ONT
6:03a
6h 03m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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Airports
Origin

Ontario
$184
Destination

Chicago
$184