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: Tue Oct 17 2017 Return: Tue Oct 24 2017 Trip spans 8 days
Frontier
Frontier
ONT
ORD
13h 29m
1 stop
ORD
ONT
13h 44m
1 stop
Depart: Mon Oct 16 2017 Return: Wed Oct 18 2017 Trip spans 3 days
United
United
ONT
ORD
6h 20m
1 stop
ORD
ONT
9h 39m
1 stop
Depart: Tue Jan 23 2018 Return: Sat Jan 27 2018 Trip spans 5 days
American Airlines
American Airlines
ONT
ORD
5h 29m
1 stop
ORD
ONT
6h 00m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 4 2017 Trip spans 2 days
Delta
Delta
ONT
MDW
10h 05m
2 stops
MDW
ONT
12h 21m
2 stops
Depart: Tue Oct 17 2017 Return: Sat Oct 28 2017 Trip spans 12 days
United
United
ONT
ORD
5h 52m
1 stop
ORD
ONT
7h 16m
1 stop
Depart: Wed Nov 8 2017 Return: Sun Nov 12 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
ORD
8h 00m
1 stop
ORD
ONT
6h 53m
1 stop
Depart: Wed Oct 18 2017 Return: Wed Nov 1 2017 Trip spans 15 days
United
United
ONT
ORD
8h 08m
1 stop
ORD
ONT
7h 15m
1 stop
Depart: Sun Oct 15 2017 Return: Tue Oct 24 2017 Trip spans 10 days
Frontier
Frontier
ONT
ORD
13h 29m
1 stop
ORD
ONT
13h 44m
1 stop
Depart: Sat Oct 21 2017 Return: Wed Nov 1 2017 Trip spans 12 days
United
United
ONT
ORD
6h 51m
1 stop
ORD
ONT
5h 55m
1 stop
Depart: Tue Oct 17 2017 Return: Fri Oct 27 2017 Trip spans 11 days
Frontier
Frontier
ONT
ORD
13h 29m
1 stop
ORD
ONT
18h 24m
1 stop
Depart: Wed Sep 27 2017 Return: Sat Sep 30 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
ORD
5h 49m
1 stop
ORD
ONT
6h 23m
1 stop
Depart: Mon Oct 23 2017 Return: Sat Oct 28 2017 Trip spans 6 days
United
United
ONT
ORD
6h 20m
1 stop
ORD
ONT
8h 21m
1 stop
Depart: Sun Oct 22 2017 Return: Tue Oct 31 2017 Trip spans 10 days
Frontier
Frontier
ONT
ORD
21h 20m
1 stop
ORD
ONT
13h 44m
1 stop
Depart: Tue Oct 24 2017 Return: Sat Oct 28 2017 Trip spans 5 days
United
United
ONT
ORD
7h 34m
1 stop
ORD
ONT
9h 08m
1 stop
Depart: Thu Dec 7 2017 Return: Sun Dec 10 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
ORD
6h 08m
1 stop
ORD
ONT
6h 06m
1 stop
Depart: Tue Oct 24 2017 Return: Fri Oct 27 2017 Trip spans 4 days
Frontier
Frontier
ONT
ORD
21h 20m
1 stop
ORD
ONT
18h 24m
1 stop
Depart: Wed Oct 25 2017 Return: Mon Oct 30 2017 Trip spans 6 days
United
United
ONT
ORD
8h 08m
1 stop
ORD
ONT
7h 42m
1 stop
Depart: Wed Oct 25 2017 Return: Fri Oct 27 2017 Trip spans 3 days
Frontier
Frontier
ONT
ORD
21h 34m
1 stop
ORD
ONT
18h 24m
1 stop
Depart: Thu Oct 26 2017 Return: Wed Nov 1 2017 Trip spans 7 days
United
United
ONT
ORD
8h 38m
1 stop
ORD
ONT
7h 15m
1 stop
Depart: Fri Oct 27 2017 Return: Sun Oct 29 2017 Trip spans 3 days
Frontier
Frontier
ONT
ORD
21h 34m
1 stop
ORD
ONT
13h 44m
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
1310 6:30 am 12:20 pm Sep 5 - Sep 29
1760 6:30 am 12:20 pm Oct 2 - Oct 30
4768 7:45 am 1:30 pm Oct 7 - Oct 28
1680 2:20 pm 8:05 pm Sep 30 - Sep 30
6385 3:05 pm 8:50 pm Oct 1 - Oct 29
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Ontario
$218
Destination

Chicago
only $218
only $262
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