Find flights
Deals
When to book
FAQs & Tips
Airlines

$54 Find cheap flights from Ontario to San Francisco Bay Area

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 9/15. 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
Mon 7/15
Mon 7/22

Search hundreds of travel sites at once for deals on flights to San Francisco Bay Area

In the last 7 days travelers have searched 43,982,894 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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$38
San Jose
San Jose1 stop$100

Good to know

Low season

January

High season

June

Cheapest flight

$54
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Ontario to San Jose

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 $44 one-way - $76 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 78 reviews
8.4Boarding
8.1Comfort
6.8Food
8.9Crew
6.5Entertainment
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

Be prepared for departure delays at SFO while the runways are under construction. No fault of the airlines, so be flexible. Alaska is my favorite air line but needs to pay flight attendants for all the time they're at work, not just when in the air.

It was cancelled due to crew. I missed a special family graduation due to this

I like the big picture of the Eskimo on the tail of the plane.

Flight was delayed 2 hours. It was too cold inside the cabin. My seat mate had no jacket so she was shivering the entire flight. The stewardess says there’s no available blanket.

It was really good and that's why we choose AA over other airlines.

Seats are uncomfortable but let room was adequate. The snack is pretty weak and the staff not particularly friendly.

We landed in San Diego from Fresno 10 min late and our gate was occupied. We waited OVER AN HOUR to get to the gate and didnt get any updates about what was happening until I asked. Then we were told it would be another 5 minutes....which turned into 25. My wife was waiting in cell phone lot over an hour and finally had to leave. It cost me $40 cab ride and a fight with my wife. THanks for nothing Alaska Air.

The flight was delayed for 2 hours and the last delay was not communicated and had to check manually.

Sat on tarmac for 30 minutes despite staring at three empty gates, one of which we eventually pulled into

Everything was great. Flight was on time with no issues. It was a short connecting flight so ww didn't have food offered. The gate we got off at was very close to our connecting flight gate so that was very easy.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

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.

My flight was delayed then cancelled My elder parents were upstairs waiting for a spirit rep to bring them downstairs to where my sister waited for 2 hours. My elder parents are not able to walk . My dad was wet of urine from where he could not hold it .waiting for some spirit personnel to wheel chair them back down stairs to where my sister was waiting for them for two hours . That is not ok

Terrible leg room, seats don’t recline, delayed flight, and even water isn’t free onboard

Flight was good and clean but delayed over an hour on the return flight.

It was nice! There was a very unhappy child in front of us and the flight attendant did a great job calming the child. I was impressed.

They stuck us with multiple extra fees. I will never fly spirit again

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

They wouldn’t let us on the flight even tho we were an hour early. No refund not even our bags that were prepaid

I did not enjoy the trip home on Frontier for several reasons: there is too much cost besides the flight, which was more than I would normally pay, then having to pay for luggage, and carry-on, seat (if you want to reserve when booking) then you must pay over $3 for a can of soda, and $4 for a snack. A cup of water is free.

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

I appreciated the upgrade to free cary-on bag and seat selection at no charge

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

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.

Book cheap flights from Ontario to San Francisco Bay Area

Recent round-trip flight deals

6/30Sun
nonstopFrontier
1h 27mONT-SFO
7/6Sat
nonstopFrontier
1h 22mSFO-ONT
$72
7/23Tue
nonstopFrontier
1h 26mONT-SFO
7/27Sat
nonstopFrontier
1h 25mSFO-ONT
$73
8/14Wed
nonstopUnited Airlines
1h 20mONT-SFO
8/14Wed
nonstopUnited Airlines
1h 30mSFO-ONT
$154
7/4Thu
nonstopUnited Airlines
1h 20mONT-SFO
7/4Thu
nonstopUnited Airlines
1h 30mSFO-ONT
$224
8/6Tue
1 stopAlaska Airlines
7h 31mONT-OAK
8/10Sat
1 stopAlaska Airlines
17h 59mOAK-ONT
$252
8/6Tue
2 stopsAlaska Airlines
16h 55mONT-OAK
8/10Sat
1 stopAlaska Airlines
13h 25mOAK-ONT
$267
8/9Fri
1 stopAmerican Airlines
6h 10mONT-STS
8/14Wed
1 stopAmerican Airlines
5h 25mSTS-ONT
$267
7/27Sat
1 stopAmerican Airlines
5h 57mONT-SJC
8/8Thu
1 stopAmerican Airlines
5h 53mSJC-ONT
$366
7/1Mon
1 stopDelta
15h 06mONT-SJC
7/5Fri
1 stopDelta
6h 32mSJC-ONT
$590
7/1Mon
1 stopDelta
10h 26mONT-SJC
7/3Wed
1 stopDelta
10h 17mSJC-ONT
$707

Search by stops

Search by airline

Search by price

Recent one-way flight deals

9/15Sun
1 stopFrontier
16h 08mONT-SJC
$54
8/31Sat
1 stopFrontier
16h 36mONT-SJC
$55
8/14Wed
1 stopAmerican Airlines
6h 14mONT-SFO
$99
7/31Wed
1 stopAmerican Airlines
6h 36mONT-SFO
$118
9/17Tue
1 stopAlaska Airlines
7h 24mONT-OAK
$131
8/11Sun
nonstopUnited Airlines
1h 20mONT-SFO
$133
10/29Tue
1 stopAlaska Airlines
12h 19mONT-OAK
$137
6/28Fri
1 stopDelta
26h 43mONT-OAK
$198
7/22Mon
nonstopUnited Airlines
1h 20mONT-SFO
$199
6/24Mon
1 stopDelta
18h 22mONT-OAK
$403

Search by stops

Search by airline

Search by price

Last minute flights from Ontario to San Francisco Bay Area

Last minute flight, train and bus deals

6/19Wed
nonstopFrontier
1h 28mONT-SFO
6/21Fri
nonstopFrontier
1h 23mSFO-ONT
$107
6/19Wed
nonstopFrontier
1h 28mONT-SFO
6/21Fri
nonstopFrontier
1h 23mSFO-ONT
$108
6/16Sun
multi-stopAmerican Airlines
6h 20mONT-STS
6/18Tue
multi-stopAmerican Airlines
5h 26mSTS-ONT
$655
6/19Wed
multi-stopAmerican Airlines
5h 43mONT-SJC
6/20Thu
multi-stopAmerican Airlines
6h 02mSJC-ONT
$673
6/20Thu
multi-stopAlaska Airlines
10h 09mONT-SJC
7/22Mon
multi-stopAlaska Airlines
7h 15mSJC-ONT
$772
6/20Thu
multi-stopAlaska Airlines
27h 35mONT-OAK
7/1Mon
multi-stopAlaska Airlines
23h 06mOAK-ONT
$795
6/20Thu
multi-stopUnited Airlines
15h 43mONT-SJC
7/22Mon
multi-stopUnited Airlines
17h 35mSJC-ONT
$1,206
6/16Sun
multi-stopDelta
6h 30mONT-SJC
6/16Sun
multi-stopDelta
4h 42mSJC-ONT
$1,400
6/19Wed
multi-stopDelta
10h 34mONT-SJC
6/20Thu
multi-stopDelta
6h 17mSJC-ONT
$1,405
6/20Thu
multi-stopUnited Airlines
8h 34mONT-SJC
6/24Mon
multi-stopUnited Airlines
10h 28mSJC-ONT
$1,418

Search by stops

Search by airline

Search by price

Ontario - San Francisco Bay Area Flights

Departure:

Ontario (ONT)United States

Return flight deals:

San Francisco Bay Area - Ontario

Cabin classes:

$356
$153
$296
$37