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Find cheap flights from Ontario to San Francisco Bay Area from $50

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to San Francisco Bay Area departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 6/2
Sun 6/9

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Best San Francisco Bay Area Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

San Francisco
San Franciscononstop$36
San Jose
San Jose1 stop$278

Good to know

Low season

January

High season

October

Cheapest flight

$50
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from Ontario to San Francisco

FAQs - booking San Francisco Bay Area flights

  • How does KAYAK find such low prices on flights from Ontario to San Francisco Bay Area?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Francisco Bay Area.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Francisco Bay Area?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco Bay Area from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to San Francisco Bay Area?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco Bay Area with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Francisco Bay Area?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco Bay Area from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to San Francisco Bay Area

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: San Francisco $38 one-way - $65 round-trip

Top 5 airlines serving from Ontario to San Francisco Bay Area

 
Need help choosing which airline to fly with from Ontario to San Francisco Bay Area? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Breeze AirwaysOverall score based on 75 reviews
8.1Comfort
6.7Food
8.9Crew
6.4Entertainment
8.3Boarding
Airline reviews

The only thing that would make the experience better is a little more leg room and the overhead bins are very low. I hit my head when I was settling into the middle seat and was nervous about poking my eye on the corner of a lowered bin when I was deplaning.

8.0 ExcellentKaren, Apr 2024CAK - LAS
Read more about Breeze Airways reviews

The only thing that would make the experience better is a little more leg room and the overhead bins are very low. I hit my head when I was settling into the middle seat and was nervous about poking my eye on the corner of a lowered bin when I was deplaning.

It helps manage expectations to know that this is a discount airline. I brought my own snacks so that I wouldn't have to buy something if I got hungry or thirsty for soda during the flight. One of my seat mates was unaware that he would have to pay $4 for a Coke and was a bit upset. He hadn't listened to the flight attendant say "Drinks for purchase?". All of the employees I interacted with were friendly and professional. My one complaint is that the overhead bins are very low when they are open. I was heading for the middle seat and unexpectedly hit the top of my head on the bottom of the open overhead bin. The headrests were also a little uncomfortable. But overall, for the price, it was a decent value, and I would fly Breeze again.

Flight was on time. The crew was efficient and kind.

Did not like the fact that I was charged to take on a bag I usually put in the overhead

My flight was delayed, not by much.?very good communication during fest and waiting to board.

Communication with airline electronically was difficult. No number seemed available to talk to customer service.

What could have been better is if Discover credit card would be able to purchase food

Crew was inconsistent in instructions in advising passengers about seat backs during take off. Perfunctory announcements except from cabin.

The experience with Breeze was really great. The app makes managing flights easy. You can check in on there 24 hours in advance, and your boarding pass is there, too. The flight crew and the staff at both our airports were wonderful. Snacks and drinks were reasonably priced. The seats were very comfortable, they even had adjustable headrests on every seat. The only downside is not having entertainment or Wi-Fi available onboard.

The price is amazing. I was worried about how the flight would be as I never flew then. Seats were very comfortable. We had lots of legroom. The Akron airport was really nice. Overall it didn't have the stress we usually experience with flying. Highly recommend

They canceled the flight 30 minutes prior to departure without any heads up.

We had a very scary attempted landing in Palm Springs and were redirected to Ontario. It was a stressful flight.

Every thing means , crew, service, timing, boarding is very good.

Good - San Jose security is a breeze. Exact opposite of San Diego. Flight on time. Bad - FA's were not that cheery or polite. I thought we may blow out a tire as the pilot slammed down a hard landing in perfect conditions. He came in pretty hot like he had a date waiting.

It was our baby’s first flight and everything went perfect. The flight attendant gave him his first set of wings and we were smooth flying from there.

The messaging about the change in flight destination and options for getting to SFO was poor. There should have been frequent updates. When I spoke to the boarding agent moment before we were supposed to board, he was flippant and offered no help before the announcement was made that transportation would be arranged. It was as poor of an experience that I've ever had.

My plane ride down landed 20 min late. Boarding at SFO was strange too. The people at the terminal were nice—but, boarding lacked direction, and was confusing . Coming back was worse—the plane was hours behind—and I barely caught the last Bart train back to San Francisco (3 min more and I would have been in trouble). It was a very stressful trip, and it didn’t need to be.

the departure got delayed due to SJC situation, but it was a quite good waiting thanks to Alaska airline teams.

WiFi connection bad. Food is really awful. Crew very nice and efficient

It was the worst experience because they delayed the flight by 2 and half hours. We were supposed to depart by 3:41 but they did the depart by 6 pm. It was so boring!!

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

For a 22 minute flight all you expect is for it to be safe and comfortable

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

It was fine. Boarding was a little rude. On flight staff was great. The cost to purchase everything was a bit annoying but I get that's the business model.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Terrible. Seats are bad and the baggage policy is inconsistent

Better than I expected but I did pay for a seat and carry on bags ahead of time.

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

I hope to avoid flying with them in the future. First flight got cancelled then got stuck with a 13 hour layover in Denver. The process was long and frustrating to many people.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

Book cheap flights from Ontario to San Francisco Bay Area

Recent round-trip flight deals

6/25Tue
nonstopFrontier
1h 27mONT-SFO
8/19Mon
1 stopFrontier
11h 34mSFO-ONT
$95
6/28Fri
nonstopFrontier
1h 28mONT-SFO
8/5Mon
nonstopFrontier
1h 21mSFO-ONT
$96
6/1Sat
nonstopUnited Airlines
1h 25mONT-SFO
6/4Tue
nonstopUnited Airlines
1h 35mSFO-ONT
$169
6/1Sat
nonstop
1h 28mONT-SFO
6/4Tue
2 stops
10h 18mSFO-ONT
$176
6/1Sat
nonstop
1h 28mONT-SFO
6/4Tue
2 stops
10h 18mSFO-ONT
$181
5/29Wed
1 stopAmerican Airlines
5h 40mONT-SJC
6/2Sun
1 stopAmerican Airlines
5h 37mSJC-ONT
$278
6/25Tue
1 stopAlaska Airlines
13h 00mONT-OAK
8/20Tue
1 stopAlaska Airlines
16h 20mOAK-ONT
$308
6/25Tue
1 stopAlaska Airlines
12h 14mONT-SJC
8/20Tue
1 stopAlaska Airlines
14h 05mSJC-ONT
$308
5/17Fri
1 stopAmerican Airlines
5h 40mONT-SJC
5/19Sun
1 stopAmerican Airlines
5h 37mSJC-ONT
$318
5/29Wed
3 stopsUnited Airlines
16h 03mONT-SJC
6/5Wed
1 stopUnited Airlines
10h 28mSJC-ONT
$526

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Recent one-way flight deals

5/10Fri
nonstopFrontier
1h 27mONT-SFO
$50
5/10Fri
nonstopFrontier
1h 27mONT-SFO
$53
5/30Thu
1 stopAmerican Airlines
6h 15mONT-SFO
$104
6/1Sat
nonstopUnited Airlines
1h 25mONT-SFO
$115
5/29Wed
1 stopAmerican Airlines
6h 09mONT-SFO
$124
6/6Thu
nonstopUnited Airlines
1h 25mONT-SFO
$140
6/4Tue
1 stopAlaska Airlines
28h 00mONT-OAK
$153
6/25Tue
1 stopAlaska Airlines
12h 14mONT-SJC
$160
9/4Wed
1 stopDelta
10h 38mONT-SJC
$366
9/3Tue
1 stopDelta
16h 49mONT-SJC
$433

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Last minute flights from Ontario to San Francisco Bay Area

Last minute flight, train and bus deals

5/4Sat
nonstopFrontier
1h 28mONT-SFO
5/14Tue
nonstopFrontier
1h 29mSFO-ONT
$87
5/4Sat
nonstopFrontier
1h 28mONT-SFO
5/11Sat
nonstopFrontier
1h 30mSFO-ONT
$88
5/8Wed
nonstopFrontier
1h 27mONT-SFO
5/16Thu
nonstopFrontier
1h 24mSFO-ONT
$89
5/7Tue
multi-stopAmerican Airlines
5h 40mONT-SJC
5/9Thu
multi-stopAmerican Airlines
5h 37mSJC-ONT
$393
5/4Sat
multi-stopAmerican Airlines
5h 47mONT-SJC
5/11Sat
multi-stopAmerican Airlines
6h 05mSJC-ONT
$402
5/8Wed
multi-stopAlaska Airlines
17h 25mONT-OAK
5/12Sun
multi-stopAlaska Airlines
13h 04mOAK-ONT
$912
5/4Sat
multi-stopAlaska Airlines
13h 43mONT-OAK
5/12Sun
multi-stopAlaska Airlines
13h 04mOAK-ONT
$932
5/7Tue
multi-stopDelta
10h 31mONT-OAK
5/8Wed
multi-stopDelta
9h 18mOAK-ONT
$1,119
5/8Wed
multi-stopUnited Airlines
9h 52mONT-SJC
5/8Wed
multi-stopUnited Airlines
15h 26mSJC-ONT
$1,500
5/8Wed
multi-stopDelta
6h 45mONT-SJC
5/8Wed
multi-stopDelta
6h 43mSJC-ONT
$1,502

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Ontario - San Francisco Bay Area Flights

Departure:

Ontario (ONT)United States

Return flight deals:

San Francisco Bay Area - Ontario

Cabin classes:

$358
$153
$296
$38