Find Cheap 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 Oct 17 2017 Return: Tue Oct 24 2017 Trip spans 8 days
Frontier
Frontier
ONT
12:00a
ORD
1:29p
13h 29m
1 stop
ORD
12:00a
ONT
1:44p
13h 44m
1 stop
Depart: Tue Dec 12 2017 Return: Sat Dec 16 2017 Trip spans 5 days
United
United
ONT
12:00a
ORD
6:19a
6h 19m
1 stop
ORD
12:00a
ONT
7:06a
7h 06m
1 stop
Depart: Tue Jan 23 2018 Return: Sat Jan 27 2018 Trip spans 5 days
American Airlines
American Airlines
ONT
12:00a
ORD
5:29a
5h 29m
1 stop
ORD
12:00a
ONT
6:00a
6h 00m
1 stop
Depart: Mon Nov 6 2017 Return: Wed Nov 8 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
ORD
9:10p
21h 10m
1 stop
ORD
12:00a
ONT
5:45a
5h 45m
1 stop
Depart: Thu Nov 2 2017 Return: Tue Nov 7 2017 Trip spans 6 days
Frontier
Frontier
ONT
12:00a
ORD
8:59p
20h 59m
1 stop
ORD
12:00a
ONT
1:49p
13h 49m
1 stop
Depart: Sat Feb 3 2018 Return: Tue Feb 6 2018 Trip spans 4 days
United
United
ONT
12:00a
ORD
5:40a
5h 40m
1 stop
ORD
12:00a
ONT
5:43a
5h 43m
1 stop
Depart: Wed Oct 25 2017 Return: Mon Oct 30 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
ORD
8:08a
8h 08m
1 stop
ORD
12:00a
ONT
6:10a
6h 10m
1 stop
Depart: Tue Oct 10 2017 Return: Wed Oct 11 2017 Trip spans 2 days
United
United
ONT
12:00a
ORD
8:20a
8h 20m
1 stop
ORD
12:00a
ONT
7:44a
7h 44m
1 stop
Depart: Fri Oct 20 2017 Return: Mon Oct 23 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
ORD
9:34p
21h 34m
1 stop
ORD
12:00a
ONT
6:10a
6h 10m
1 stop
Depart: Fri Nov 3 2017 Return: Mon Nov 6 2017 Trip spans 4 days
United
United
ONT
12:00a
ORD
6:20a
6h 20m
1 stop
ORD
12:00a
ONT
6:41a
6h 41m
1 stop
Depart: Sat Feb 17 2018 Return: Mon Feb 19 2018 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
12:00a
ORD
7:20a
7h 20m
1 stop
ORD
12:00a
ONT
12:00a
24h 00m
1 stop
Depart: Sat Sep 30 2017 Return: Mon Oct 2 2017 Trip spans 3 days
United
United
ONT
12:00a
ORD
7:31a
7h 31m
1 stop
ORD
12:00a
ONT
6:39a
6h 39m
1 stop
Depart: Thu Mar 15 2018 Return: Tue Mar 20 2018 Trip spans 6 days
Frontier
Frontier
ONT
12:00a
ORD
1:08p
13h 08m
1 stop
ORD
12:00a
ONT
1:45p
13h 45m
1 stop
Depart: Sat Oct 14 2017 Return: Sat Oct 21 2017 Trip spans 8 days
United
United
ONT
12:00a
ORD
6:20a
6h 20m
1 stop
ORD
12:00a
ONT
7:07a
7h 07m
1 stop
Depart: Thu Sep 28 2017 Return: Mon Oct 2 2017 Trip spans 5 days
United
United
ONT
12:00a
ORD
7:31a
7h 31m
1 stop
ORD
12:00a
ONT
9:45a
9h 45m
1 stop
Depart: Sat Sep 23 2017 Return: Tue Sep 26 2017 Trip spans 4 days
United
United
ONT
12:00a
ORD
7:07a
7h 07m
1 stop
ORD
12:00a
ONT
6:59a
6h 59m
1 stop
Depart: Mon Mar 26 2018 Return: Fri Mar 30 2018 Trip spans 5 days
United
United
ONT
12:00a
ORD
6:58a
6h 58m
1 stop
ORD
12:00a
ONT
3:58p
15h 58m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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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^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
Airports
Origin

Ontario
$218
Destination

Chicago
$218
Airlines Airline reviews

2 travelers who booked a flight from Ontario to Chicago rated their chosen airlines with an average of 6.0.

Overall
6.0
Boarding
6.0
Crew
6.0
Comfort
6.0
Food
6.0
Entertainment
6.0