Find Deals on Flights from Chicago to Ontario (CHI - ONT)

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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights from Chicago to Ontario

(Round-trip)
Depart: Wed Jan 25 2017 Return: Wed Feb 1 2017 Trip spans 8 days
American Airlines
American Airlines
ORD
ONT
6h 00m
1 stop
ONT
ORD
5h 44m
1 stop
Depart: Sat Jan 14 2017 Return: Wed Jan 18 2017 Trip spans 5 days
United
United
ORD
ONT
6h 44m
1 stop
ONT
ORD
6h 53m
1 stop
Depart: Wed Jan 18 2017 Return: Fri Jan 20 2017 Trip spans 3 days
Major Airline
Major Airline
MDW
ONT
5h 24m
nonstop
ONT
MDW
1h 24m
nonstop
Depart: Mon Feb 13 2017 Return: Wed Feb 15 2017 Trip spans 3 days
Delta
Delta
MDW
ONT
9h 35m
2 stops
ONT
MDW
8h 51m
2 stops
Depart: Tue Jan 31 2017 Return: Sat Feb 4 2017 Trip spans 5 days
American Airlines
American Airlines
ORD
ONT
6h 46m
1 stop
ONT
ORD
6h 07m
1 stop
Depart: Wed Mar 8 2017 Return: Mon Mar 20 2017 Trip spans 12 days
Southwest
Southwest
MDW
ONT
4h 25m
nonstop
ONT
MDW
3h 45m
nonstop
Depart: Sat Feb 4 2017 Return: Wed Feb 8 2017 Trip spans 5 days
American Airlines
American Airlines
ORD
ONT
6h 19m
1 stop
ONT
ORD
6h 32m
1 stop
Depart: Fri Feb 3 2017 Return: Sat Feb 11 2017 Trip spans 9 days
United
United
ORD
ONT
8h 43m
1 stop
ONT
ORD
5h 48m
1 stop
Depart: Thu Apr 6 2017 Return: Sun Apr 9 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ORD
ONT
8h 31m
1 stop
ONT
ORD
22h 10m
1 stop
Depart: Sat Feb 11 2017 Return: Wed Feb 15 2017 Trip spans 5 days
American Airlines
American Airlines
ORD
ONT
8h 15m
1 stop
ONT
ORD
6h 14m
1 stop
Depart: Thu Jan 19 2017 Return: Thu Jan 26 2017 Trip spans 8 days
Major Airline
Major Airline
MDW
ONT
5h 24m
1 stop
ONT
MDW
1h 24m
1 stop
Depart: Wed Mar 8 2017 Return: Tue Mar 14 2017 Trip spans 6 days
American Airlines
American Airlines
ORD
ONT
6h 27m
1 stop
ONT
ORD
8h 40m
1 stop
Depart: Thu Feb 2 2017 Return: Sun Feb 5 2017 Trip spans 4 days
United
United
ORD
ONT
7h 40m
1 stop
ONT
ORD
6h 47m
1 stop
Depart: Tue Mar 7 2017 Return: Wed Mar 15 2017 Trip spans 8 days
Major Airline
Major Airline
MDW
ONT
5h 24m
2 stops
ONT
MDW
1h 24m
2 stops
Depart: Sat Apr 22 2017 Return: Sat Apr 29 2017 Trip spans 8 days
Delta
Delta
MDW
ONT
7h 41m
2 stops
ONT
MDW
8h 45m
2 stops
Depart: Sat Apr 22 2017 Return: Sat Apr 29 2017 Trip spans 8 days
American Airlines
American Airlines
ORD
ONT
7h 16m
1 stop
ONT
ORD
6h 37m
1 stop
Depart: Tue May 2 2017 Return: Thu May 11 2017 Trip spans 10 days
American Airlines
American Airlines
ORD
ONT
6h 49m
1 stop
ONT
ORD
6h 15m
1 stop
Depart: Fri Mar 3 2017 Return: Wed Mar 8 2017 Trip spans 6 days
Delta
Delta
ORD
ONT
6h 12m
1 stop
ONT
ORD
7h 27m
1 stop
Depart: Mon Dec 12 2016 Return: Thu Dec 15 2016 Trip spans 4 days
Major Airline
Major Airline
ORD
ONT
5h 23m
nonstop
ONT
ORD
1h 23m
nonstop
Depart: Wed Apr 12 2017 Return: Tue Apr 18 2017 Trip spans 7 days
American Airlines
American Airlines
ORD
ONT
6h 27m
1 stop
ONT
ORD
8h 40m
1 stop
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
3800 8:15 am 10:40 am Dec 21 - Jan 2
2270 8:40 am 11:05 am Dec 18 - Dec 20
2270 8:40 am 11:05 am Jan 1 - Jan 3
3220 8:40 am 11:05 am Dec 25 - Dec 25
5651 8:40 am 11:05 am Jan 4 - Jan 4
1876 8:45 am 11:10 am Dec 31 - Dec 31
1900 8:45 am 11:10 am Dec 24 - Dec 24
4583 8:50 am 11:15 am Jan 7 - Mar 4
406 9:10 am 11:35 am Jan 5 - Mar 8
3768 9:25 am 11:45 am Jan 8 - Jan 29
2956 9:55 am 12:20 pm Dec 17 - Dec 17
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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

We compile tonnes of data for you
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.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Chicago
only $194
only $222
Destination

Ontario
$194
Airlines Airline reviews

2 travelers who booked a flight from Chicago to Ontario rated their chosen airlines with an average of 10.0.

Overall
10.0
Boarding
10.0
Crew
10.0
Comfort
10.0
Food
10.0
Entertainment
10.0