Find Cheap Flights from Ontario to Chicago (ONT - CHI)

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

(Round-trip)
Depart: Mon Jan 29 2018 Return: Tue Jan 30 2018 Trip spans 2 days
Frontier
Frontier
ONT
ORD
21h 56m
1 stop
ORD
ONT
15h 12m
1 stop
Depart: Fri Dec 1 2017 Return: Sun Dec 3 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
ORD
21h 10m
1 stop
ORD
ONT
24h 05m
1 stop
Depart: Wed Jan 10 2018 Return: Wed Jan 17 2018 Trip spans 8 days
United
United
ONT
ORD
6h 10m
1 stop
ORD
ONT
7h 06m
1 stop
Depart: Tue Jan 9 2018 Return: Thu Jan 11 2018 Trip spans 3 days
American Airlines
American Airlines
ONT
ORD
6h 28m
1 stop
ORD
ONT
5h 56m
1 stop
Depart: Mon Jan 29 2018 Return: Wed Jan 31 2018 Trip spans 3 days
Frontier
Frontier
ONT
ORD
21h 56m
1 stop
ORD
ONT
24h 11m
1 stop
Depart: Thu Nov 30 2017 Return: Sun Dec 3 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
ORD
20h 17m
1 stop
ORD
ONT
24h 05m
1 stop
Depart: Tue Jan 30 2018 Return: Wed Jan 31 2018 Trip spans 2 days
Frontier
Frontier
ONT
ORD
12h 57m
1 stop
ORD
ONT
24h 11m
1 stop
Depart: Fri Dec 1 2017 Return: Sun Dec 3 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
ORD
28h 27m
1 stop
ORD
ONT
24h 05m
1 stop
Depart: Thu Nov 30 2017 Return: Tue Dec 5 2017 Trip spans 6 days
Frontier
Frontier
ONT
ORD
13h 00m
1 stop
ORD
ONT
17h 20m
1 stop
Depart: Sat Jan 13 2018 Return: Wed Jan 17 2018 Trip spans 5 days
United
United
ONT
ORD
6h 11m
1 stop
ORD
ONT
5h 36m
1 stop
Depart: Wed Jan 31 2018 Return: Sat Feb 3 2018 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ONT
ORD
11h 13m
1 stop
ORD
ONT
6h 13m
1 stop
Depart: Thu Feb 1 2018 Return: Mon Feb 5 2018 Trip spans 5 days
Frontier
Frontier
ONT
ORD
12h 57m
1 stop
ORD
ONT
40h 56m
2 stops
Depart: Tue Jan 16 2018 Return: Wed Jan 17 2018 Trip spans 2 days
United
United
ONT
ORD
8h 07m
1 stop
ORD
ONT
7h 06m
1 stop
Depart: Thu Feb 1 2018 Return: Sat Feb 3 2018 Trip spans 3 days
Multiple Airlines
Multiple Airlines
ONT
ORD
12h 57m
1 stop
ORD
ONT
6h 13m
1 stop
Depart: Sat Jan 27 2018 Return: Sat Feb 3 2018 Trip spans 8 days
United
United
ONT
ORD
7h 01m
1 stop
ORD
ONT
6h 13m
1 stop
Depart: Fri Jan 12 2018 Return: Tue Jan 16 2018 Trip spans 5 days
Frontier
Frontier
ONT
ORD
11h 13m
1 stop
ORD
ONT
15h 12m
1 stop
Depart: Wed Jan 24 2018 Return: Fri Jan 26 2018 Trip spans 3 days
Frontier
Frontier
ONT
ORD
21h 56m
1 stop
ORD
ONT
15h 12m
1 stop
Depart: Thu Jan 11 2018 Return: Wed Jan 17 2018 Trip spans 7 days
United
United
ONT
ORD
5h 37m
1 stop
ORD
ONT
6h 13m
1 stop
Depart: Fri Jan 26 2018 Return: Tue Jan 30 2018 Trip spans 5 days
Frontier
Frontier
ONT
ORD
21h 56m
1 stop
ORD
ONT
15h 12m
1 stop
Depart: Sat Jan 27 2018 Return: Mon Feb 5 2018 Trip spans 10 days
United
United
ONT
ORD
8h 07m
1 stop
ORD
ONT
8h 20m
1 stop
Select an airline:  Southwest
Direct flights ONT to CHI on Southwest
Flight # Depart ONT Arrive MDW Sun Mon Tue Wed Thu Fri Sat Valid Between
441 5:15 am 11:05 am Nov 28 - Dec 19
441 5:15 am 11:05 am Dec 25 - Jan 1
6741 6:05 am 11:55 am Dec 20 - Jan 2
4379 6:25 am 12:15 pm Dec 23 - Dec 30
4347 7:10 am 12:55 pm Dec 3 - Jan 7
4307 2:15 pm 8:00 pm Dec 2 - Dec 16
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$126
Destination

Chicago
$126