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
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 Mar 1 2016 Return: Wed Mar 2 2016 Trip spans 2 days
United
United
ONT
3:28p
ORD
11:31p
8h 03m
1 stop
ORD
5:02a
ONT
3:14p
10h 12m
1 stop
Depart: Wed Mar 2 2016 Return: Sat Mar 5 2016 Trip spans 4 days
United
United
ONT
7:37a
ORD
2:21p
6h 44m
1 stop
ORD
1:46a
ONT
11:24a
9h 38m
1 stop
Depart: Sat Mar 5 2016 Return: Tue Mar 8 2016 Trip spans 4 days
United
United
ONT
1:56p
ORD
9:56p
8h 00m
1 stop
ORD
2:23p
ONT
8:27p
6h 04m
1 stop
Depart: Tue Mar 8 2016 Return: Tue Mar 15 2016 Trip spans 7 days
United
United
ONT
10:02a
ORD
4:14p
6h 12m
1 stop
ORD
1:37p
ONT
9:31p
7h 54m
1 stop
Depart: Wed Mar 9 2016 Return: Tue Mar 15 2016 Trip spans 6 days
United
United
ONT
10:02a
ORD
5:26p
7h 24m
1 stop
ORD
1:37p
ONT
9:31p
7h 54m
1 stop
Depart: Tue Mar 15 2016 Return: Tue Mar 22 2016 Trip spans 8 days
United
United
ONT
8:49a
ORD
4:23p
7h 34m
1 stop
ORD
2:00a
ONT
10:19a
8h 19m
1 stop
Depart: Sat Apr 23 2016 Return: Tue Apr 26 2016 Trip spans 4 days
United
United
ONT
11:29a
ORD
7:30p
8h 01m
1 stop
ORD
10:20a
ONT
6:16p
7h 56m
1 stop
Depart: Sat Apr 30 2016 Return: Sat May 7 2016 Trip spans 8 days
United
United
ONT
11:29a
ORD
7:30p
8h 01m
1 stop
ORD
5:55a
ONT
2:31p
8h 36m
1 stop
Depart: Tue Feb 23 2016 Return: Tue Mar 1 2016 Trip spans 8 days
United
United
ONT
3:28p
ORD
11:31p
8h 03m
1 stop
ORD
11:05a
ONT
8:55p
9h 50m
1 stop
Depart: Mon Apr 11 2016 Return: Wed Apr 20 2016 Trip spans 10 days
United
United
ONT
4:46p
ORD
11:59p
7h 13m
1 stop
ORD
2:55a
ONT
10:06a
7h 11m
1 stop
Depart: Fri Mar 4 2016 Return: Tue Mar 8 2016 Trip spans 5 days
United
United
ONT
2:01p
ORD
9:56p
7h 55m
1 stop
ORD
12:36p
ONT
8:55p
8h 19m
1 stop
Depart: Fri Apr 15 2016 Return: Tue Apr 19 2016 Trip spans 5 days
United
United
ONT
3:59p
ORD
10:56p
6h 57m
1 stop
ORD
5:25a
ONT
2:16p
8h 51m
1 stop
Depart: Fri Apr 22 2016 Return: Tue Apr 26 2016 Trip spans 5 days
United
United
ONT
4:46p
ORD
10:56p
6h 10m
1 stop
ORD
5:17a
ONT
2:16p
8h 59m
1 stop
Depart: Fri May 6 2016 Return: Sat May 7 2016 Trip spans 2 days
United
United
ONT
11:29a
ORD
6:05p
6h 36m
1 stop
ORD
10:30a
ONT
7:21p
8h 51m
1 stop
Depart: Thu Mar 3 2016 Return: Tue Mar 8 2016 Trip spans 6 days
United
United
ONT
1:00a
ORD
7:40a
6h 40m
1 stop
ORD
12:37p
ONT
8:27p
7h 50m
1 stop
Depart: Mon Mar 7 2016 Return: Tue Mar 8 2016 Trip spans 2 days
United
United
ONT
3:26p
ORD
9:46p
6h 20m
1 stop
ORD
11:05a
ONT
8:55p
9h 50m
1 stop
Depart: Wed Feb 24 2016 Return: Tue Mar 1 2016 Trip spans 7 days
United
United
ONT
3:28p
ORD
11:31p
8h 03m
1 stop
ORD
11:05a
ONT
8:55p
9h 50m
1 stop
Depart: Sat Feb 27 2016 Return: Tue Mar 1 2016 Trip spans 4 days
United
United
ONT
3:28p
ORD
10:43p
7h 15m
1 stop
ORD
11:05a
ONT
8:55p
9h 50m
1 stop
Depart: Sat Feb 20 2016 Return: Mon Feb 22 2016 Trip spans 3 days
Delta
Delta
ONT
1:10a
ORD
8:25a
7h 15m
1 stop
ORD
1:32p
ONT
7:29p
5h 57m
1 stop
Depart: Sun Mar 6 2016 Return: Mon Mar 7 2016 Trip spans 2 days
American Airlines
American Airlines
ONT
4:30p
ORD
11:02p
6h 32m
1 stop
ORD
1:25p
ONT
8:07p
6h 42m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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
$172
Destination

Chicago
$172