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: Fri Jun 2 2017 Return: Sat Jun 3 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
ORD
10h 57m
2 stops
ORD
ONT
8h 30m
2 stops
Depart: Wed Oct 18 2017 Return: Tue Oct 31 2017 Trip spans 14 days
United
United
ONT
ORD
8h 00m
1 stop
ORD
ONT
8h 07m
1 stop
Depart: Fri Oct 27 2017 Return: Tue Oct 31 2017 Trip spans 5 days
Delta
Delta
ONT
ORD
5h 51m
1 stop
ORD
ONT
5h 59m
1 stop
Depart: Fri Aug 25 2017 Return: Sat Sep 2 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
ORD
6h 15m
1 stop
ORD
ONT
6h 49m
1 stop
Depart: Fri Jun 2 2017 Return: Sun Jun 4 2017 Trip spans 3 days
Major Airline
Major Airline
ONT
MDW
1h 24m
nonstop
MDW
ONT
5h 24m
nonstop
Depart: Thu Oct 19 2017 Return: Tue Oct 24 2017 Trip spans 6 days
United
United
ONT
ORD
6h 45m
1 stop
ORD
ONT
8h 13m
1 stop
Depart: Sat Sep 2 2017 Return: Wed Sep 6 2017 Trip spans 5 days
Major Airline
Major Airline
ONT
ORD
17h 52m
2 stops
ORD
ONT
7h 57m
2 stops
Depart: Mon Oct 16 2017 Return: Tue Oct 24 2017 Trip spans 9 days
Major Airline
Major Airline
ONT
ORD
10h 01m
1 stop
ORD
ONT
7h 53m
1 stop
Depart: Fri Jul 7 2017 Return: Tue Jul 11 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
ORD
3h 57m
nonstop
ORD
ONT
4h 17m
nonstop
Depart: Mon Aug 28 2017 Return: Tue Aug 29 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
ORD
11h 25m
1 stop
ORD
ONT
12h 17m
1 stop
Depart: Sun Jul 23 2017 Return: Tue Jul 25 2017 Trip spans 3 days
American Airlines
American Airlines
ONT
ORD
3h 57m
nonstop
ORD
ONT
4h 17m
nonstop
Depart: Sat Jun 3 2017 Return: Sun Jun 11 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
ORD
6h 21m
1 stop
ORD
ONT
6h 02m
1 stop
Depart: Fri Sep 15 2017 Return: Sun Sep 17 2017 Trip spans 3 days
American Airlines
American Airlines
ONT
ORD
8h 40m
1 stop
ORD
ONT
6h 36m
1 stop
Depart: Tue May 30 2017 Return: Sat Jun 3 2017 Trip spans 5 days
United
United
ONT
ORD
6h 10m
1 stop
ORD
ONT
7h 36m
1 stop
Depart: Sun Aug 6 2017 Return: Sun Aug 13 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
ORD
3h 57m
nonstop
ORD
ONT
6h 02m
1 stop
Depart: Thu Sep 14 2017 Return: Sun Sep 17 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
ORD
9h 30m
1 stop
ORD
ONT
12h 17m
1 stop
Depart: Wed May 31 2017 Return: Wed Jun 7 2017 Trip spans 8 days
Delta
Delta
ONT
MDW
8h 57m
2 stops
MDW
ONT
12h 43m
2 stops
Depart: Tue May 30 2017 Return: Sat Jun 3 2017 Trip spans 5 days
United
United
ONT
ORD
6h 07m
1 stop
ORD
ONT
6h 40m
1 stop
Depart: Tue Jul 4 2017 Return: Fri Jul 21 2017 Trip spans 18 days
Major Airline
Major Airline
ONT
MDW
1h 24m
1 stop
MDW
ONT
5h 24m
1 stop
Depart: Thu Jul 13 2017 Return: Tue Jul 18 2017 Trip spans 6 days
American Airlines
American Airlines
ONT
ORD
3h 57m
nonstop
ORD
ONT
4h 17m
nonstop
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
3199 6:05 am 11:55 am Jun 10 - Aug 12
4847 6:05 am 11:55 am May 20 - Jun 3
413 2:55 pm 8:45 pm May 29 - May 29
413 2:55 pm 8:45 pm May 30 - Jun 2
2774 3:10 pm 8:55 pm Jun 4 - Aug 13
368 3:55 pm 9:40 pm Jun 5 - Jun 30
* 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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Airports
Origin

Ontario
$214
Destination

Chicago
only $214
only $258