Find Deals on International 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 from worldwide to Ontario

(Round-trip)
Depart: Tue Aug 22 2017 Return: Mon Aug 28 2017 Trip spans 7 days
United
United
SFO
ONT
1h 29m
nonstop
ONT
SFO
1h 30m
nonstop
Depart: Tue Aug 22 2017 Return: Sat Aug 26 2017 Trip spans 5 days
Delta
Delta
SLC
ONT
1h 44m
nonstop
ONT
SLC
1h 47m
nonstop
Depart: Mon Sep 18 2017 Return: Thu Sep 21 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 20m
nonstop
ONT
PDX
2h 24m
nonstop
Depart: Fri Sep 29 2017 Return: Sun Oct 1 2017 Trip spans 3 days
Major Airline
Major Airline
PDX
ONT
2h 20m
nonstop
ONT
PDX
2h 24m
nonstop
Depart: Wed Nov 1 2017 Return: Fri Nov 3 2017 Trip spans 3 days
American Airlines
American Airlines
DFW
ONT
3h 01m
nonstop
ONT
DFW
2h 54m
nonstop
Depart: Thu Jul 13 2017 Return: Mon Jul 24 2017 Trip spans 12 days
Southwest
Southwest
SEA
ONT
4h 15m
1 stop
ONT
SEA
4h 20m
1 stop
Depart: Mon Aug 14 2017 Return: Sun Aug 20 2017 Trip spans 7 days
Aeromexico
Aeromexico
GDL
ONT
3h 02m
nonstop
ONT
GDL
3h 13m
nonstop
Depart: Fri Nov 3 2017 Return: Fri Nov 10 2017 Trip spans 8 days
Volaris
Volaris
GDL
ONT
3h 31m
nonstop
ONT
GDL
3h 20m
nonstop
Depart: Sat Sep 2 2017 Return: Tue Sep 5 2017 Trip spans 4 days
United
United
SFO
ONT
1h 29m
nonstop
ONT
SFO
1h 30m
nonstop
Depart: Wed Aug 23 2017 Return: Tue Aug 29 2017 Trip spans 7 days
Delta
Delta
SLC
ONT
1h 55m
nonstop
ONT
SLC
1h 47m
nonstop
Depart: Sat Sep 2 2017 Return: Wed Sep 20 2017 Trip spans 19 days
Delta
Delta
SLC
ONT
1h 51m
nonstop
ONT
SLC
1h 47m
nonstop
Depart: Thu Aug 31 2017 Return: Tue Sep 5 2017 Trip spans 6 days
United
United
SFO
ONT
1h 29m
nonstop
ONT
SFO
1h 30m
nonstop
Depart: Mon Sep 25 2017 Return: Thu Sep 28 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
PDX
ONT
2h 20m
nonstop
ONT
PDX
2h 24m
nonstop
Depart: Thu Oct 26 2017 Return: Mon Oct 30 2017 Trip spans 5 days
Major Airline
Major Airline
PDX
ONT
2h 23m
nonstop
ONT
PDX
2h 22m
nonstop
Depart: Tue Sep 26 2017 Return: Sat Sep 30 2017 Trip spans 5 days
Delta
Delta
SLC
ONT
1h 55m
nonstop
ONT
SLC
1h 47m
nonstop
Depart: Mon Jul 3 2017 Return: Tue Jul 11 2017 Trip spans 9 days
United
United
SFO
ONT
1h 29m
nonstop
ONT
SFO
1h 30m
nonstop
Depart: Sat Oct 14 2017 Return: Tue Oct 17 2017 Trip spans 4 days
Delta
Delta
SLC
ONT
1h 47m
nonstop
ONT
SLC
1h 47m
nonstop
Depart: Sat Nov 11 2017 Return: Sat Nov 18 2017 Trip spans 8 days
American Airlines
American Airlines
DFW
ONT
3h 01m
nonstop
ONT
DFW
6h 19m
1 stop
Depart: Fri Jun 30 2017 Return: Sun Jul 2 2017 Trip spans 3 days
Major Airline
Major Airline
SFO
ONT
11h 00m
2 stops
ONT
SFO
9h 16m
2 stops
Depart: Tue Jul 25 2017 Return: Tue Aug 1 2017 Trip spans 8 days
United
United
SFO
ONT
1h 29m
nonstop
ONT
SFO
1h 30m
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

San Francisco
$142
Portland
$173
Seattle
$205
Guadalajara
$236
Salt Lake City
$147
Dallas
$183
Destination

Ontario
$142
Airlines Airline reviews

103 travelers who booked a flight from San Francisco to Ontario rated their chosen airlines with an average of 7.3.

Overall
7.6
Boarding
7.6
Crew
7.9
Comfort
7.4
Food
6.9
Entertainment
6.6