Find Deals on International Flights from 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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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Ontario to worldwide

(Round-trip)
Depart: Tue Aug 29 2017 Return: Tue Sep 5 2017 Trip spans 8 days
Delta
Delta
ONT
SLC
1h 47m
nonstop
SLC
ONT
1h 44m
nonstop
Depart: Fri Sep 8 2017 Return: Sat Sep 9 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
PDX
2h 24m
nonstop
PDX
ONT
2h 20m
nonstop
Depart: Thu Sep 14 2017 Return: Mon Sep 18 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
PDX
2h 24m
nonstop
PDX
ONT
2h 20m
nonstop
Depart: Sat Oct 28 2017 Return: Sat Nov 4 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
DFW
3h 04m
nonstop
DFW
ONT
3h 07m
nonstop
Depart: Mon Oct 9 2017 Return: Mon Oct 16 2017 Trip spans 8 days
Southwest
Southwest
ONT
PDX
2h 15m
nonstop
PDX
ONT
2h 10m
nonstop
Depart: Sat Sep 16 2017 Return: Tue Sep 19 2017 Trip spans 4 days
United
United
ONT
DEN
2h 11m
nonstop
DEN
ONT
2h 15m
nonstop
Depart: Fri Sep 8 2017 Return: Sun Sep 10 2017 Trip spans 3 days
Volaris
Volaris
ONT
GDL
3h 11m
nonstop
GDL
ONT
3h 10m
nonstop
Depart: Sat Sep 2 2017 Return: Tue Sep 5 2017 Trip spans 4 days
Delta
Delta
ONT
SLC
1h 51m
nonstop
SLC
ONT
1h 44m
nonstop
Depart: Thu Aug 3 2017 Return: Fri Aug 25 2017 Trip spans 23 days
Aeromexico
Aeromexico
ONT
GDL
3h 13m
nonstop
GDL
ONT
3h 02m
nonstop
Depart: Sat Sep 16 2017 Return: Mon Sep 18 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
PDX
2h 24m
nonstop
PDX
ONT
2h 20m
nonstop
Depart: Fri Jun 2 2017 Return: Wed Jun 7 2017 Trip spans 6 days
Major Airline
Major Airline
ONT
SEA
2h 46m
nonstop
SEA
ONT
2h 26m
nonstop
Depart: Sat Aug 26 2017 Return: Wed Sep 6 2017 Trip spans 12 days
American Airlines
American Airlines
ONT
DFW
3h 00m
nonstop
DFW
ONT
3h 01m
nonstop
Depart: Wed Jun 14 2017 Return: Mon Jun 26 2017 Trip spans 13 days
Hahn Air Systems
Hahn Air Systems
ONT
GDL
3h 11m
nonstop
GDL
ONT
3h 10m
nonstop
Depart: Fri Oct 6 2017 Return: Tue Oct 10 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
ONT
PDX
2h 22m
nonstop
PDX
ONT
2h 23m
nonstop
Depart: Fri Aug 25 2017 Return: Mon Aug 28 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
PDX
5h 18m
1 stop
PDX
ONT
9h 26m
1 stop
Depart: Tue Oct 24 2017 Return: Sat Oct 28 2017 Trip spans 5 days
United
United
ONT
DEN
2h 05m
nonstop
DEN
ONT
2h 18m
nonstop
Depart: Fri Nov 24 2017 Return: Tue Nov 28 2017 Trip spans 5 days
American Airlines
American Airlines
ONT
DFW
3h 04m
nonstop
DFW
ONT
3h 01m
nonstop
Depart: Wed Aug 23 2017 Return: Sun Aug 27 2017 Trip spans 5 days
Delta
Delta
ONT
DFW
5h 33m
1 stop
DFW
ONT
5h 40m
1 stop
Depart: Thu Aug 31 2017 Return: Sat Sep 2 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
ONT
PDX
2h 24m
nonstop
PDX
ONT
2h 20m
nonstop
Depart: Sat Nov 4 2017 Return: Sat Nov 11 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
DFW
3h 04m
nonstop
DFW
ONT
3h 01m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

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.

We compile tonnes of data for you
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

Ontario
$147
Destination

Portland
$173
Seattle
$175
Guadalajara
$256
Denver
$201
Salt Lake City
$147
Dallas
$177