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
Students
under 26
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: Sat Jan 21 2017 Return: Tue Jan 24 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
SEA
2h 37m
nonstop
SEA
ONT
2h 29m
nonstop
Depart: Fri Jan 27 2017 Return: Sat Jan 28 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
SEA
2h 36m
nonstop
SEA
ONT
2h 29m
nonstop
Depart: Tue Feb 28 2017 Return: Tue Mar 7 2017 Trip spans 8 days
American Airlines
American Airlines
ONT
MEX
16h 16m
1 stop
MEX
ONT
6h 28m
1 stop
Depart: Mon Jan 23 2017 Return: Thu Jan 26 2017 Trip spans 4 days
Southwest
Southwest
ONT
DFW
3h 00m
nonstop
DFW
ONT
3h 20m
nonstop
Depart: Fri May 5 2017 Return: Sun May 14 2017 Trip spans 10 days
Volaris
Volaris
ONT
GDL
3h 15m
nonstop
GDL
ONT
3h 26m
nonstop
Depart: Wed Jan 4 2017 Return: Thu Jan 26 2017 Trip spans 23 days
Aeromexico
Aeromexico
ONT
MEX
15h 01m
1 stop
MEX
ONT
13h 09m
1 stop
Depart: Sat Jan 28 2017 Return: Sun Jan 29 2017 Trip spans 2 days
Major Airline
Major Airline
ONT
SEA
2h 36m
nonstop
SEA
ONT
2h 29m
nonstop
Depart: Wed Feb 8 2017 Return: Sat Feb 11 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
SEA
2h 38m
nonstop
SEA
ONT
2h 30m
nonstop
Depart: Thu Jan 26 2017 Return: Tue Jan 31 2017 Trip spans 6 days
Delta
Delta
ONT
MCO
9h 41m
1 stop
MCO
ONT
8h 49m
1 stop
Depart: Thu Feb 2 2017 Return: Sun Feb 5 2017 Trip spans 4 days
Major Airline
Major Airline
ONT
SEA
2h 37m
nonstop
SEA
ONT
2h 29m
nonstop
Depart: Tue Mar 7 2017 Return: Tue Mar 14 2017 Trip spans 7 days
Alaska Airlines
Alaska Airlines
ONT
SEA
2h 38m
nonstop
SEA
ONT
2h 31m
nonstop
Depart: Mon Mar 13 2017 Return: Wed Mar 22 2017 Trip spans 10 days
United
United
ONT
CUN
16h 35m
1 stop
CUN
ONT
17h 36m
1 stop
Depart: Sat Feb 4 2017 Return: Mon Feb 6 2017 Trip spans 3 days
Major Airline
Major Airline
ONT
SEA
2h 36m
nonstop
SEA
ONT
2h 28m
nonstop
Depart: Wed Apr 12 2017 Return: Tue Apr 18 2017 Trip spans 7 days
Alaska Airlines
Alaska Airlines
ONT
SEA
2h 42m
nonstop
SEA
ONT
2h 27m
nonstop
Depart: Sat Jan 28 2017 Return: Mon Feb 6 2017 Trip spans 10 days
American Airlines
American Airlines
ONT
MEX
8h 51m
1 stop
MEX
ONT
18h 15m
1 stop
Depart: Fri Apr 7 2017 Return: Thu Apr 13 2017 Trip spans 7 days
Major Airline
Major Airline
ONT
SEA
2h 42m
nonstop
SEA
ONT
2h 24m
nonstop
Depart: Sat Feb 18 2017 Return: Tue Feb 21 2017 Trip spans 4 days
American Airlines
American Airlines
ONT
MEX
19h 11m
1 stop
MEX
ONT
5h 47m
1 stop
Depart: Wed Feb 1 2017 Return: Mon Feb 6 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
ONT
SEA
2h 36m
nonstop
SEA
ONT
2h 29m
nonstop
Depart: Thu Feb 2 2017 Return: Mon Feb 6 2017 Trip spans 5 days
Major Airline
Major Airline
ONT
SEA
3h 53m
1 stop
SEA
ONT
5h 24m
1 stop
Depart: Sun Dec 11 2016 Return: Sun Dec 25 2016 Trip spans 15 days
American Airlines
American Airlines
ONT
MEX
19h 14m
1 stop
MEX
ONT
17h 44m
1 stop
* 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
$137
Destination

Cancun
$312
Seattle
$137
Orlando
$294
Guadalajara
$232
Dallas
$209
Mexico City
$175