Find Cheap Flights to Ontario

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 to Ontario

(Round-trip)
Depart: Thu Aug 24 2017 Return: Wed Aug 30 2017 Trip spans 7 days
American Airlines
American Airlines
AUS
ONT
4h 38m
1 stop
ONT
AUS
4h 56m
1 stop
Depart: Tue Sep 12 2017 Return: Tue Sep 19 2017 Trip spans 8 days
United
United
AUS
ONT
5h 43m
1 stop
ONT
AUS
8h 16m
1 stop
Depart: Sat Jun 24 2017 Return: Sun Jun 25 2017 Trip spans 2 days
Major Airline
Major Airline
DAL
ONT
4h 23m
nonstop
ONT
DAL
0h 23m
nonstop
Depart: Wed Aug 30 2017 Return: Wed Sep 6 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
ATL
ONT
6h 33m
1 stop
ONT
ATL
7h 55m
1 stop
Depart: Sat Oct 28 2017 Return: Wed Nov 1 2017 Trip spans 5 days
Delta
Delta
BWI
ONT
7h 18m
1 stop
ONT
BWI
6h 55m
1 stop
Depart: Sat Dec 9 2017 Return: Tue Jan 2 2018 Trip spans 25 days
Southwest
Southwest
AUS
ONT
7h 25m
1 stop
ONT
AUS
5h 55m
1 stop
Depart: Fri Oct 27 2017 Return: Tue Oct 31 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
DAL
ONT
26h 12m
1 stop
ONT
DAL
22h 18m
1 stop
Depart: Tue Sep 26 2017 Return: Tue Oct 10 2017 Trip spans 15 days
American Airlines
American Airlines
AUS
ONT
4h 38m
1 stop
ONT
AUS
4h 45m
1 stop
Depart: Tue Oct 17 2017 Return: Tue Oct 24 2017 Trip spans 8 days
United
United
AUS
ONT
5h 10m
1 stop
ONT
AUS
7h 52m
1 stop
Depart: Sat Aug 26 2017 Return: Sun Aug 27 2017 Trip spans 2 days
American Airlines
American Airlines
AUS
ONT
4h 38m
1 stop
ONT
AUS
4h 37m
1 stop
Depart: Wed Sep 6 2017 Return: Sat Sep 23 2017 Trip spans 18 days
Major Airline
Major Airline
ATL
ONT
10h 28m
1 stop
ONT
ATL
9h 06m
1 stop
Depart: Fri Jul 21 2017 Return: Tue Aug 8 2017 Trip spans 19 days
Delta
Delta
DAL
ONT
12h 33m
2 stops
ONT
DAL
12h 33m
2 stops
Depart: Wed Aug 30 2017 Return: Sun Sep 3 2017 Trip spans 5 days
United
United
ATL
ONT
7h 44m
1 stop
ONT
ATL
6h 18m
1 stop
Depart: Tue Oct 10 2017 Return: Tue Oct 17 2017 Trip spans 8 days
American Airlines
American Airlines
ATL
ONT
6h 32m
1 stop
ONT
ATL
6h 20m
1 stop
Depart: Fri Oct 27 2017 Return: Mon Oct 30 2017 Trip spans 4 days
Delta
Delta
DAL
ONT
12h 12m
2 stops
ONT
DAL
10h 02m
2 stops
Depart: Thu Sep 7 2017 Return: Mon Sep 11 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
CLT
ONT
7h 15m
1 stop
ONT
CLT
6h 43m
1 stop
Depart: Wed Nov 8 2017 Return: Sat Nov 11 2017 Trip spans 4 days
United
United
ATL
ONT
9h 38m
1 stop
ONT
ATL
7h 37m
1 stop
Depart: Thu Jul 6 2017 Return: Sun Jul 9 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
AUS
ONT
8h 28m
1 stop
ONT
AUS
5h 41m
1 stop
Depart: Fri Sep 8 2017 Return: Wed Sep 13 2017 Trip spans 6 days
Major Airline
Major Airline
BWI
ONT
20h 10m
2 stops
ONT
BWI
17h 08m
2 stops
Depart: Wed Sep 13 2017 Return: Tue Oct 10 2017 Trip spans 28 days
American Airlines
American Airlines
BWI
ONT
7h 20m
1 stop
ONT
BWI
6h 56m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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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

Charlotte
$338
Baltimore
$290
Atlanta
$276
Austin
$224
Dallas
$280
Destination

Ontario
$224