Find Cheap 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
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Chicago to Ontario

(Round-trip)
Depart: Tue Oct 31 2017 Return: Tue Nov 7 2017 Trip spans 8 days
Frontier
Frontier
ORD
ONT
13h 44m
1 stop
ONT
ORD
20h 59m
1 stop
Depart: Wed Jan 10 2018 Return: Wed Jan 17 2018 Trip spans 8 days
United
United
ORD
ONT
7h 15m
1 stop
ONT
ORD
6h 46m
1 stop
Depart: Wed Jan 10 2018 Return: Wed Jan 17 2018 Trip spans 8 days
American Airlines
American Airlines
ORD
ONT
6h 36m
1 stop
ONT
ORD
5h 29m
1 stop
Depart: Thu Nov 30 2017 Return: Sun Dec 3 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ORD
ONT
13h 49m
1 stop
ONT
ORD
7h 49m
1 stop
Depart: Sat Jan 13 2018 Return: Wed Jan 17 2018 Trip spans 5 days
United
United
ORD
ONT
8h 13m
1 stop
ONT
ORD
5h 40m
1 stop
Depart: Tue Oct 31 2017 Return: Tue Nov 14 2017 Trip spans 15 days
Frontier
Frontier
ORD
ONT
18h 24m
1 stop
ONT
ORD
13h 00m
1 stop
Depart: Sat Jan 13 2018 Return: Sat Jan 20 2018 Trip spans 8 days
American Airlines
American Airlines
ORD
ONT
6h 36m
1 stop
ONT
ORD
5h 29m
1 stop
Depart: Tue Jan 16 2018 Return: Sat Jan 20 2018 Trip spans 5 days
United
United
ORD
ONT
5h 43m
1 stop
ONT
ORD
8h 25m
1 stop
Depart: Sun Dec 10 2017 Return: Mon Dec 11 2017 Trip spans 2 days
Frontier
Frontier
ORD
ONT
13h 46m
1 stop
ONT
ORD
21h 18m
1 stop
Depart: Tue Jan 23 2018 Return: Sat Jan 27 2018 Trip spans 5 days
American Airlines
American Airlines
ORD
ONT
6h 36m
1 stop
ONT
ORD
5h 29m
1 stop
Depart: Wed Jan 17 2018 Return: Sat Jan 20 2018 Trip spans 4 days
United
United
ORD
ONT
7h 08m
1 stop
ONT
ORD
5h 40m
1 stop
Depart: Thu Oct 26 2017 Return: Tue Oct 31 2017 Trip spans 6 days
Frontier
Frontier
ORD
ONT
13h 44m
1 stop
ONT
ORD
20h 59m
1 stop
Depart: Sat Jan 27 2018 Return: Wed Jan 31 2018 Trip spans 5 days
United
United
ORD
ONT
6h 43m
1 stop
ONT
ORD
8h 43m
1 stop
Depart: Thu Nov 16 2017 Return: Sat Dec 2 2017 Trip spans 17 days
Frontier
Frontier
ORD
ONT
13h 49m
1 stop
ONT
ORD
21h 10m
1 stop
Depart: Sat Oct 21 2017 Return: Tue Oct 31 2017 Trip spans 11 days
American Airlines
American Airlines
ORD
ONT
6h 05m
1 stop
ONT
ORD
5h 49m
1 stop
Depart: Thu Jan 4 2018 Return: Wed Jan 10 2018 Trip spans 7 days
United
United
ORD
ONT
10h 17m
1 stop
ONT
ORD
8h 08m
1 stop
Depart: Fri Nov 3 2017 Return: Tue Nov 7 2017 Trip spans 5 days
American Airlines
American Airlines
ORD
ONT
6h 05m
1 stop
ONT
ORD
6h 24m
1 stop
Depart: Tue Jan 30 2018 Return: Sat Feb 3 2018 Trip spans 5 days
Frontier
Frontier
ORD
ONT
16h 27m
1 stop
ONT
ORD
11h 08m
1 stop
Depart: Sat Jan 6 2018 Return: Sat Jan 13 2018 Trip spans 8 days
United
United
ORD
ONT
7h 06m
1 stop
ONT
ORD
8h 24m
1 stop
Depart: Thu Nov 23 2017 Return: Sat Dec 2 2017 Trip spans 10 days
Frontier
Frontier
ORD
ONT
17h 20m
1 stop
ONT
ORD
21h 10m
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
1336 6:20 pm 8:35 pm Nov 4 - Nov 4
4800 6:20 pm 8:35 pm Oct 7 - Oct 28
2953 6:30 pm 8:55 pm Nov 11 - Nov 11
433 7:20 pm 9:35 pm Oct 31 - Oct 31
1196 7:25 pm 9:40 pm Oct 9 - Oct 30
1196 7:25 pm 9:40 pm Nov 1 - Nov 3
709 7:30 pm 10:00 pm Nov 20 - Nov 24
709 7:30 pm 10:00 pm Nov 6 - Nov 16
5288 7:35 pm 10:00 pm Nov 17 - Nov 21
2205 7:40 pm 10:10 pm Nov 18 - Nov 25
4633 7:45 pm 10:20 pm Nov 5 - Nov 19
3829 8:05 pm 10:25 pm Oct 8 - Oct 29
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Chicago
$191
Destination

Ontario
$191