Find Deals on Flights from Ontario to San Francisco (ONT - SFO)

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 San Francisco

(Round-trip)
Depart: Wed May 18 2016 Return: Mon May 23 2016 Trip spans 6 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Wed Mar 2 2016 Return: Sat Mar 5 2016 Trip spans 4 days
United
United
ONT
SFO
1h 26m
nonstop
SFO
ONT
1h 25m
nonstop
Depart: Sat Apr 23 2016 Return: Wed Apr 27 2016 Trip spans 5 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Mon May 23 2016 Return: Tue May 24 2016 Trip spans 2 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Tue Jun 14 2016 Return: Wed Jun 15 2016 Trip spans 2 days
United
United
ONT
SFO
1h 18m
nonstop
SFO
ONT
1h 13m
nonstop
Depart: Mon Jun 6 2016 Return: Thu Jun 9 2016 Trip spans 4 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 27m
nonstop
Depart: Fri Mar 18 2016 Return: Tue Mar 22 2016 Trip spans 5 days
United
United
ONT
SFO
1h 28m
nonstop
SFO
ONT
1h 25m
nonstop
Depart: Thu Apr 7 2016 Return: Sun Apr 10 2016 Trip spans 4 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Sat May 14 2016 Return: Fri May 20 2016 Trip spans 7 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Thu Jun 2 2016 Return: Sat Jun 4 2016 Trip spans 3 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Wed Jul 27 2016 Return: Sat Jul 30 2016 Trip spans 4 days
United
United
ONT
SFO
1h 18m
nonstop
SFO
ONT
1h 18m
nonstop
Depart: Tue Aug 9 2016 Return: Tue Aug 16 2016 Trip spans 8 days
United
United
ONT
SFO
1h 23m
nonstop
SFO
ONT
1h 18m
nonstop
Depart: Fri Mar 25 2016 Return: Fri Apr 1 2016 Trip spans 8 days
United
United
ONT
SFO
1h 28m
nonstop
SFO
ONT
1h 25m
nonstop
Depart: Fri Apr 8 2016 Return: Sun Apr 10 2016 Trip spans 3 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Fri Apr 22 2016 Return: Sun Apr 24 2016 Trip spans 3 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 26m
nonstop
Depart: Fri Jun 3 2016 Return: Fri Jun 10 2016 Trip spans 8 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 27m
nonstop
Depart: Fri Jul 8 2016 Return: Sun Jul 17 2016 Trip spans 10 days
United
United
ONT
SFO
1h 18m
nonstop
SFO
ONT
1h 18m
nonstop
Depart: Fri Feb 26 2016 Return: Mon Feb 29 2016 Trip spans 4 days
United
United
ONT
SFO
1h 29m
nonstop
SFO
ONT
1h 25m
nonstop
Depart: Mon Feb 22 2016 Return: Tue Feb 23 2016 Trip spans 2 days
United
United
ONT
SFO
1h 26m
nonstop
SFO
ONT
1h 25m
nonstop
Direct flights ONT to SFO on United
Flight # Depart ONT Arrive SFO Sun Mon Tue Wed Thu Fri Sat Valid Between
5014 6:00 am 7:29 am Feb 13 - Feb 27
5014 6:00 am 7:28 am Mar 3 - Mar 12
5014 6:00 am 7:29 am Feb 11 - Mar 2
5014 6:00 am 7:28 am Mar 13 - Apr 4
5055 8:00 am 9:29 am Feb 13 - Feb 27
5055 8:00 am 9:29 am Feb 11 - Mar 2
5055 8:39 am 10:07 am Mar 14 - Apr 4
5055 8:39 am 10:07 am Mar 3 - Mar 11
5055 8:42 am 10:10 am Mar 5 - Mar 12
5055 8:42 am 10:10 am Mar 13 - Apr 3
5056 9:35 am 11:03 am Mar 3 - Mar 12
5056 9:35 am 11:03 am Mar 13 - Apr 4
5056 10:25 am 11:54 am Feb 11 - Mar 2
5015 12:35 pm 2:03 pm Mar 5 - Mar 12
5015 12:35 pm 2:03 pm Mar 19 - Apr 2
5015 12:37 pm 2:03 pm Feb 13 - Feb 27
5015 12:37 pm 2:03 pm Feb 11 - Mar 2
5015 12:47 pm 2:15 pm Mar 13 - Apr 3
5015 12:47 pm 2:15 pm Mar 6 - Mar 6
5015 12:49 pm 2:17 pm Mar 3 - Mar 11
5015 12:49 pm 2:17 pm Mar 14 - Apr 4
5057 2:48 pm 4:14 pm Feb 11 - Mar 2
5057 2:53 pm 4:19 pm Feb 13 - Feb 27
5057 2:53 pm 4:21 pm Mar 13 - Apr 3
5057 2:53 pm 4:21 pm Mar 6 - Mar 6
5057 2:54 pm 4:22 pm Mar 19 - Mar 26
5057 2:54 pm 4:22 pm Mar 5 - Mar 12
5057 3:02 pm 4:30 pm Mar 3 - Mar 11
5057 3:02 pm 4:30 pm Mar 14 - Apr 4
5058 4:55 pm 6:23 pm Mar 13 - Apr 3
5058 4:55 pm 6:23 pm Mar 6 - Mar 6
5058 5:00 pm 6:28 pm Mar 19 - Apr 2
5058 5:00 pm 6:28 pm Mar 5 - Mar 12
5058 5:02 pm 6:30 pm Mar 14 - Apr 4
5058 5:02 pm 6:30 pm Mar 3 - Mar 11
5058 5:22 pm 6:48 pm Feb 16 - Mar 1
5058 5:31 pm 6:57 pm Feb 11 - Mar 2
5058 5:31 pm 6:57 pm Feb 13 - Feb 27
5058 5:41 pm 7:07 pm Feb 14 - Feb 28
5059 6:44 pm 8:10 pm Feb 24 - Mar 2
5059 6:44 pm 8:10 pm Feb 11 - Feb 23
5059 6:51 pm 8:19 pm Mar 13 - Apr 3
5059 6:51 pm 8:19 pm Mar 6 - Mar 6
5059 6:56 pm 8:24 pm Mar 5 - Mar 12
5059 6:56 pm 8:24 pm Mar 19 - Apr 2
5059 7:01 pm 8:29 pm Mar 3 - Mar 11
5059 7:01 pm 8:29 pm Mar 14 - Apr 4
5107 8:26 pm 9:54 pm Mar 3 - Mar 11
5107 8:26 pm 9:54 pm Mar 14 - Apr 4
5107 8:27 pm 9:55 pm Mar 6 - Mar 6
5107 8:27 pm 9:55 pm Mar 13 - Apr 3
5107 8:28 pm 9:54 pm Feb 11 - Mar 2
5107 8:28 pm 9:54 pm Feb 13 - Feb 27
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons 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 don'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.

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Airports
Origin

Ontario
$137
Destination

San Francisco
$137
Airlines