Trips

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

Search hundreds of travel sites at once for deals on flights to Ontario

Depart
Return
Any month
Compare vs. KAYAK |

San Francisco to Ontario Flight Information

Avg. Flight Duration 1h 28m
Flights Arrive in Ontario
Flights Depart from San Francisco
Flight Price $231
Distance 363 miles
Airlines United Airlines, American Airlines, Alaska Airlines, JetBlue

Good to Know

Low Season:
January
Best time to beat the crowds
2%
expected price decrease
High Season:
September
Most popular time to fly
8%
expected price increase
Average Price:
$306
(avg. price over the last 2 weeks)
Good Deal:
$261
or less (round trip)

When to Book Flights from San Francisco to Ontario

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $261 or less.
The cheapest flight from San Francisco to Ontario was found 71 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be August, September and October. The cheapest month to fly is January.
Morning departure is around 151% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Francisco to Ontario Flights

How long does a flight from San Francisco to Ontario take?
An average nonstop flight takes 1h 18m, covering a distance of 363 miles.
How many flights are there between San Francisco and Ontario?
There are 229 (nonstop) flights between San Francisco and Ontario per week, averaging 34 per day.
Which airlines provide the cheapest flights from San Francisco to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on United Airlines ($231), American Airlines ($331) and Alaska Airlines ($386).
Do I need a passport to fly between San Francisco and Ontario?
No.
Which airlines fly most frequently between San Francisco and Ontario?
United Airlines (15 times daily), Air Canada (14 times daily), Copa Airlines (3 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to Ontario?
For San Francisco to Ontario, Sunday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Ontario back to San Francisco, the best deals are generally found on Thursday, with Tuesday being the most expensive.

Book cheap flights from San Francisco to Ontario (round-trip)

Airports
Origin
San Francisco
$231
only
$231
Destination
Ontario
$231
only
$231
Sun, Nov 4
SFO
San Francisco
ONT
Ontario
1h 29m
Fri, Nov 9
ONT
Ontario
SFO
San Francisco
1h 29m
Trip: 6 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

Fri, Nov 2
SFO
San Francisco
ONT
Ontario
5h 56m
Sun, Nov 4
ONT
Ontario
SFO
San Francisco
1h 29m
Trip: 3 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 34,381 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.8
Food
6.7
ORD
DTW
Excellent 10.0

On-time, 20 minutes early!

DFW
SAN
Good 6.0

Flight from Narita to Kaoshiung was great, as usual, with JAL

Slept overnight in LA terminal, Bag sent to San Diego. Flight on American Airlines to Narita was cramped. Short stay in Narita, on to Kaoshiung via JAL, got to Kaoshiung and bag was/is still in San Diego. Hopefully, I'll never have to fly American Airlines again.

ORD
MIA
Okay 5.3

Took over an hour to get baggage.

PHX
PHL
Okay 4.0

No TVs. We were set to be 20 minutes early because of the wind, yet they still made sure we got to the gate later than the original flight time.

MEM
CLT
Excellent 8.6

The direct flight was great and made up for the rescheduled flight time in Memphis.

Original Flight did not depart on time.

Mon, Oct 29
SFO
San Francisco
ONT
Ontario
5h 14m
Wed, Oct 31
ONT
Ontario
SFO
San Francisco
5h 40m
Trip: 3 days
8.4ExcellentShow reviews
Overall 8.4 Excellent
Based on 23,901 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SEA
TPA
Excellent 10.0

We left on time and arrived on time

No complaints

HNL
SFO
Excellent 9.6

The female attendant went above and beyond. She was kind, thorough, and helped make the flight the best I’ve been on with Alaska Airlines so far!

JFK
LAX
Good 6.0

On time. Boarding easy.

Seats not comfortable. No lumbar support.

GEG
SEA
Good 7.0

Plastic water bottle! Not eco friendly?

SFO
BNA
Good 6.6

The crew was friendly and the plane was comfortable.

The entertainment feature was not working and there was only food for purchase other than one complimentary beverage which I found smaller than most.

Thu, Nov 8
SFO
San Francisco
ONT
Ontario
1h 27m
Sat, Nov 10
ONT
Ontario
SFO
San Francisco
1h 35m
Trip: 3 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Excellent 8.3

Arrived a little early!

7/8 size Brazilian airplane.

Mon, Dec 24
SFO
San Francisco
ONT
Ontario
1h 27m
Tue, Jan 1
ONT
Ontario
SFO
San Francisco
1h 28m
Trip: 9 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

Sun, Dec 9
SFO
San Francisco
ONT
Ontario
15h 44m
Tue, Dec 11
ONT
Ontario
SFO
San Francisco
13h 09m
Trip: 3 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 13,800 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
7.9
Food
7.8
SDQ
JFK
Excellent 10.0

Our seats right upfront with the extra legroom!

N/A

FLL
RDU
Good 6.0

Great crew, live TV and a very smooth flight when we left Fort Lauderdale.

They should have communicated earlier to fliers about a possible 2 hour delay. Due to an unforeseen accident on the highway, i was unable to go and park at an already booked and paid off-site parking facility so I ended up parking at the airport only to learn that the flight was delayed after 30 mins or so at the airport. I was not happy.

SJU
MCO
Mediocre 2.0

Nothing

Late and unstable

BOS
SAN
Excellent 10.0

Great end to end domestic product.

Nothing

PAP
MCO
Mediocre 2.0

I missed my flight and I took JetBlue before and this first this happened

Sat, Dec 29
SFO
San Francisco
ONT
Ontario
1h 31m
Sat, Jan 5
ONT
Ontario
SFO
San Francisco
1h 35m
Trip: 8 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

Fri, Jan 18
SFO
San Francisco
ONT
Ontario
1h 27m
Tue, Jan 22
ONT
Ontario
SFO
San Francisco
1h 28m
Trip: 5 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Excellent 8.3

Arrived a little early!

7/8 size Brazilian airplane.

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

Tue, Feb 19
SFO
San Francisco
ONT
Ontario
1h 31m
Sat, Feb 23
ONT
Ontario
SFO
San Francisco
1h 28m
Trip: 5 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Excellent 8.3

Arrived a little early!

7/8 size Brazilian airplane.

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

Thu, Mar 14
SFO
San Francisco
ONT
Ontario
1h 27m
Sun, Mar 24
ONT
Ontario
SFO
San Francisco
1h 35m
Trip: 11 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

SFO
ONT
Excellent 10.0

Although there was a slight delay, the flight was pleasant and the service very nice. We got twice something to drink and a snack. For the short flight, quite remarkable.

Everyting was fine

Thu, Mar 21
SFO
San Francisco
ONT
Ontario
1h 27m
Sun, Mar 24
ONT
Ontario
SFO
San Francisco
1h 35m
Trip: 4 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Mediocre 3.0

San Francisco to Ontario Delay for 10 min Then another dealy for 30 min After we board we had to waite inside the air craft for Cataring company to delever food for first classe

Tue, Apr 30
SFO
San Francisco
ONT
Ontario
1h 18m
Wed, May 29
ONT
Ontario
SFO
San Francisco
1h 18m
Trip: 30 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 3.3

The Crew attention was nice and very proffessional. Good coffee

We are very tired and the airplain isn't comfortable.

SFO
ONT
Excellent 10.0

Everything ran on time and the staff was very friendly.

SFO
ONT
Excellent 8.0

It was a very small plane.

SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Excellent 10.0

Great, friendly service Smooth flight

Wed, Oct 31
SFO
San Francisco
ONT
Ontario
1h 29m
Sun, Nov 4
ONT
Ontario
SFO
San Francisco
1h 29m
Trip: 5 days
6.7GoodShow reviews
Overall 6.7 Good
Based on 85 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
ONT
Mediocre 2.6

Late to board. Slow to run through safety. Late late late

SFO
ONT
Mediocre 3.6

Plane wasn't full

Coffee grounds in the bottom of my cup Seats way too small for a normal person much less for Someone with extra.

SFO
ONT
Mediocre 3.3

N/A

Kept me keep waiting for aircraft for 4 hours and toward the end told me that the flight got cancelled. Then they scheduled me to the 10:45pm flight, and the aircraft didn't come in till 12:40am. I've been waiting at the airport for more than 13 hours

SFO
ONT
Excellent 8.3

the plane was cold early in the morning. I was feeling cold in the plane.

SFO
ONT
Okay 4.0

Very uncomfortable seats, got delayed on the return trip again. Got home very late.

Fri, Jan 4
SFO
San Francisco
ONT
Ontario
15h 44m
Sun, Jan 6
ONT
Ontario
SFO
San Francisco
13h 20m
Trip: 3 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 13,800 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
7.9
Food
7.8
SJU
JFK
Good 6.3

First a Departure de ay of 1 hour, then tv monitors didnt work well.

Comfortable seats

CLE
BOS
Excellent 10.0

The staff consistently went above and beyond what I have experienced flying other airlines. The superior service began with the ticketing agent at Cleveland Hopkins airport and extended through to the flight crew. I am a convert. Whenever I can fly Jet Blue I will. I’ll tell all my friends and family that they should too.

FLL
RDU
Good 6.0

Great crew, live TV and a very smooth flight when we left Fort Lauderdale.

They should have communicated earlier to fliers about a possible 2 hour delay. Due to an unforeseen accident on the highway, i was unable to go and park at an already booked and paid off-site parking facility so I ended up parking at the airport only to learn that the flight was delayed after 30 mins or so at the airport. I was not happy.

SDQ
JFK
Excellent 10.0

Our seats right upfront with the extra legroom!

N/A

JFK
PUJ
Excellent 10.0

Flight was on time. Decent snack, very friendly.

It wasn’t enough food. Too many kids on board

Fri, Oct 26
SFO
San Francisco
ONT
Ontario
15h 36m
Sun, Oct 28
ONT
Ontario
SFO
San Francisco
15h 03m
Trip: 3 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 13,800 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
7.9
Food
7.8
CLE
BOS
Excellent 10.0

The staff consistently went above and beyond what I have experienced flying other airlines. The superior service began with the ticketing agent at Cleveland Hopkins airport and extended through to the flight crew. I am a convert. Whenever I can fly Jet Blue I will. I’ll tell all my friends and family that they should too.

FLL
RDU
Good 6.0

Great crew, live TV and a very smooth flight when we left Fort Lauderdale.

They should have communicated earlier to fliers about a possible 2 hour delay. Due to an unforeseen accident on the highway, i was unable to go and park at an already booked and paid off-site parking facility so I ended up parking at the airport only to learn that the flight was delayed after 30 mins or so at the airport. I was not happy.

SJU
JFK
Good 6.3

First a Departure de ay of 1 hour, then tv monitors didnt work well.

Comfortable seats

JAX
BOS
Excellent 10.0

We were delayed before take-off but the Captain kept us informed, great job!

FLL
JFK
Excellent 8.6

The crew is nice. Pilots are knowledgeable. I had a dog behind me on his or her mother:s lap. It was kind of scary and not hygienic.

The dog on the plane outside and not on his or her case.

Wed, Nov 14
SFO
San Francisco
ONT
Ontario
16h 07m
Mon, Nov 26
ONT
Ontario
SFO
San Francisco
12h 40m
Trip: 13 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 13,800 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
7.9
Food
7.8
JFK
SFO
Excellent 9.0

Seats quite comfortable (not as bad as Primera Air Scandinavia). Smooth takeoff. Smooth ride. Smooth landing. Self service onboard snack machine offering more than descent snacks. Quite nice flight crew. We boarded, departed and landed on time. Well done JetBlue.

Nothing really. Folks, remember. You get what you pay for (with some exceptions though).

FLL
JFK
Excellent 8.6

The crew is nice. Pilots are knowledgeable. I had a dog behind me on his or her mother:s lap. It was kind of scary and not hygienic.

The dog on the plane outside and not on his or her case.

JFK
PUJ
Excellent 10.0

Flight was on time. Decent snack, very friendly.

It wasn’t enough food. Too many kids on board

SDQ
JFK
Excellent 10.0

Our seats right upfront with the extra legroom!

N/A

FLL
RDU
Good 6.0

Great crew, live TV and a very smooth flight when we left Fort Lauderdale.

They should have communicated earlier to fliers about a possible 2 hour delay. Due to an unforeseen accident on the highway, i was unable to go and park at an already booked and paid off-site parking facility so I ended up parking at the airport only to learn that the flight was delayed after 30 mins or so at the airport. I was not happy.

Wed, Dec 26
SFO
San Francisco
ONT
Ontario
15h 44m
Thu, Jan 3
ONT
Ontario
SFO
San Francisco
13h 09m
$1263
Trip: 9 days
8.2ExcellentShow reviews
Overall 8.2 Excellent
Based on 13,800 reviews
Overall
8.2
Boarding
8.3
Comfort
8.3
Crew
8.6
Entertainment
7.9
Food
7.8
CLE
BOS
Excellent 10.0

The staff consistently went above and beyond what I have experienced flying other airlines. The superior service began with the ticketing agent at Cleveland Hopkins airport and extended through to the flight crew. I am a convert. Whenever I can fly Jet Blue I will. I’ll tell all my friends and family that they should too.

SJU
MCO
Mediocre 2.0

Nothing

Late and unstable

FLL
RDU
Good 6.0

Great crew, live TV and a very smooth flight when we left Fort Lauderdale.

They should have communicated earlier to fliers about a possible 2 hour delay. Due to an unforeseen accident on the highway, i was unable to go and park at an already booked and paid off-site parking facility so I ended up parking at the airport only to learn that the flight was delayed after 30 mins or so at the airport. I was not happy.

BOS
SAN
Excellent 10.0

Great end to end domestic product.

Nothing

JFK
SFO
Excellent 9.0

Seats quite comfortable (not as bad as Primera Air Scandinavia). Smooth takeoff. Smooth ride. Smooth landing. Self service onboard snack machine offering more than descent snacks. Quite nice flight crew. We boarded, departed and landed on time. Well done JetBlue.

Nothing really. Folks, remember. You get what you pay for (with some exceptions though).

Show more results
*
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 and someone from our team will get back to you promptly.

^
The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.

Forgot password?

Enter the email associated with your account in the field below and we'll email you a link to reset your password.

Cancel