ONT - SFO
Find cheap flights from Ontario to San Francisco from $24
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight departing on 6/14. 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.Round-trip
1 adult
Economy
Fri 7/7
Fri 7/14
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Good to know
Low season | October |
|---|---|
High season | July |
Cheapest flight | $24 |
Average price round-trip | $146 |
Good deal round-trip | $84 |
Good deal one-way | $59 |
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 32% increase in price.
Flight from Ontario to San Francisco
(avg. price over the last 2 weeks)
or less
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When to book flights from Ontario to San Francisco
Estimated round-trip price
Average price per month
Flight prices as travel date approaches
Top tips for finding a cheap flight from ONT to San Francisco
- Looking for a cheap flight? 25% of our users found flights on this route for $59 or less one-way and $84 or less round-trip.
- The cheapest flight from Ontario to San Francisco was found 76 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 June, July and August. The cheapest month to fly is October.
- Morning departure is around 40% cheaper than an evening flight, on average*.
- To pass through the security checkpoints at Ontario International Airport (ONT), you’ll need to budget a good amount of time. On many occasions, travelers have missed their flights at this airport after being held up at its checkpoints. To avoid finding yourself in a similar situation, the day you’re set to fly to San Francisco International Airport (SFO) from ONT, you should get to the airport at least 2 hours before your flight.
- If you want to withdraw some cash before departing from ONT, you can do so without hassle from one of the airport's several ATMs. These ATMs are located on the upper and lower levels of terminals 2 and 4, near the front entrance to the international terminal, and in the airport’s car rental facility.
- While waiting for your flight to San Francisco at ONT, you can purchase a meal of your choice at one of the airport's numerous restaurants. In terminal 2, you can eat at Wolfgang Puck Pizza, Cross Grain Brewhouse, or Harvest & Grounds. In terminal 4, you can eat at Rock & Brews, Wahoo’s Fish Taco, or Coffee Bean & Tea Leaf.
- If you need to do some work or fax documents once you land at San Francisco International Airport (SFO), you should check out SFO’s business center. Located in the main hall of the international terminal, the center operates from 8 a.m. to 8:30 p.m.
- In case you want to leave some of your luggage at SFO before proceeding with your journey, you’ll be happy to hear about SFO’s Airport Travel Agency which offers luggage storage services. They are located in the main hall of the international terminal.
FAQs for booking flights from Ontario to San Francisco
Top 3 airlines serving from Ontario to San Francisco
Scores according to KAYAK customer reviews7.2
American AirlinesOverall score based on 46195 reviews
67food
78crew
75boarding
68entertainment
71comfort
74overall
Airline reviews
Pros: "Flight attendants were friendly and thoughtful."
Cons: "Seating is too tight. Hard to believe that in 2019, major airlines still have seats without any electrical or UBS outlets for charging devices."
Pros: "Flight attendants were friendly and thoughtful."
Cons: "Seating is too tight. Hard to believe that in 2019, major airlines still have seats without any electrical or UBS outlets for charging devices."
Pros: "On time departure. Early arrival. Lots of seat back movies."
Cons: "Need more new releases for movie selection."
Pros: "Nothing. Just the pilot"
Cons: "Everything. Bad communication. 1 h delay. Then 3 hs in the plane. We ran out of gas. 2 more hours taxiing Never seen something similar. I really hope my mileage refund."
Pros: "Awesome roomy seat right behind business class. Could not have asked for better! And it was a gorgeous new aircraft."
Pros: "I love your entertainment selection. also the comfort of seat and it's on time."
Pros: "Nice new seats."
Cons: "The new seats are meant for "people shorter than 6 feet tall" as the flight attendant said to me. Is the airline industry deliberately discriminating against 6'6" people? 15% of the people you seat based on population are over 6'. I'm sick of paying more money for my long legs."
Pros: "Landed early"
Cons: "The seats were not as good as the ones on my BA flight to Heathrow and then Rome. Also, cross country flight but no in flight entertainment. Arrived early in PHL and American would not let me move up to an earlier PHL-SFO flight since it was a code share booked with BA. Should not be my fault as when booking it indicated all four of my flights were with BA. Once booked it indicated the return flights were code share with AA. American should have allowed me on the earlier flight. That would have opened a seat on the scheduled flight which had people waiting on standby."
Pros: "extra leg room but I had to pay for it"
Cons: "This should only be used for important communications. And to not offer food on a 6 hour flight is horrible."
Pros: "The flight crew was great and it was a very smooth landing."
Cons: "Had to pay extra for seats so we could sit together, near the front of the plane (not really, and no bathroom nearby, very small seats with zero legroom). we were delayed twice (40m then 1h10m) then told to go to a different terminal because now our flight WAS leaving on time! so we hauled over there only to be delayed again several times. we know it was a weather thing, but just wish there was more accurate info about when we would actually take off. seats on outgoing flight from SFO to CLT were GREAT, very roomy, comfortable. Coming back- not so much."
Pros: "That this flight didn't get cancelled"
Cons: "Well I didn't like that we sat at the airport for nearly 10 hours after multiple flight delays and cancellations. Why not just let us know we aren't going to be flying out. That way you could reduce the 10 hour anxiety attack and mixed emotions coming with all the drama. I also didn't like that the only flight we could get the next day was into San Jose (not SFO which is what I paid for) there wasn't any offer of reimbursement for hotel, taxi or flight. I also missed 2 extremely important fairs that my company was expected to participate in on Saturday Morning. I didn't like that when we landed in San Jose our bags were in SFO. Then American Airlines didn't want to get us a ride to SFO which we finally received after a lot of arguing which I don't find ideal. I feel like AA didn't take any responsibility. They kept saying it was weather related which I can't accept because other flights (including AA) were coming and going the entire day!!! One customer service member said the plane we were supposed to be on had to be maintenances and another said they didn't have a flight crew. The whole day was a disaster and it cost my thousands of dollars and many many hours of stress and anxiety."
Pros: "The entertainment is amazing. Did not expect it. Just download the UA app and it is connected to your device"
Cons: "Not their fault but we were detailed total of 3 hrs from Ontario to SFO and SFO to HNL due to aie traffiv in SFO. They handled it well"
Pros: "Seats were very comfortable in first class. Very happy with that experience for short haul flight. Enjoyed the service. Flight attendant checked on me multiple times and offered beverages."
Cons: "Snack/food choices."
Pros: "Crew & flight attendants very courteous and apologetic; complisnacks while waiting for delayed flight"
Cons: "Flight delay!!"
Cons: "That I could only have one carry on an my purse was considered two, really and it was a small purse."
Cons: "Arrival time was delayed 2 hours and my itinerary fell apart. United could not assist me. I bought a ticket from Alaska Airlines from a different airport.to JFK."
Pros: "Flight attendants tried but could not change situation"
Cons: "I losr one of two days- moving furniture Have to stay up another night to getready"
Pros: "Easy, convenient and everyone is nice and accommodating. We always get to SFO under an hour"
Pros: "The fact that I got fully refunded, even though I still lost out on $500+."
Cons: "My flight was supposed to leave at 12, and all that Kept happening was me receiving text messages about delays pushing my departure time back to 5:35pm. I missed a big birthday event I was throwing for my class that I teach, lost out on money spent for the event and missed out on all the memories made that night. I never got to leave, ended up cancelling my flight. What a waste of time. Seems to always happen when I fly through United."
Pros: "Ordered the Protein Box, it was ok.. crew members nice."
Cons: "The Smell on the flight was unacceptable, I was sitting about a couple rows across the middle bathroom, and it smelled horrible, I had never had an experience like this on any other flight, I fly United many times a year, and this had me really uncomfortable for almost 5 hours, since the flight was delayed almost 1.5 hours while we sat onboard the aircraft at the gate, that had me miss dinner plans too in San Francisco as well. I really hope they can fix that, For the good of the passengers, felt like I was going to be nauseous all the time, and I'm really not someone that complains or takes time to review badly."
Pros: "i was rebooked and am still on my way"
Cons: "i was delayed in ONT, making my flight an almost 24 hour trip from vONT to my destination. not fun had to reschedule car rental. luckily, they did not charge extra"
Pros: "The crew was very attentive to each guest."
Cons: "Well I paid more for a lesser quality plane ride... didn’t like that very much."
Pros: "The Crew"
Cons: "It was a passenger on the plane acting real suspicious. I didn’t like that. Also the seats was uncomfortable."
Pros: "Boarding was fine ,no food or drink And charge for small carry on luggage $50-I don’t like it"
Cons: "The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future."
Pros: "The crew were kind and efficient and the planes were clean and well maintained."
Cons: "No entertainment on the flights, but that is to be expected for the price."
Cons: "if flight was delayed should at least provide complementary soft drinks..."
Cons: "There was a malfunction online and I was overcharged for my flight. There were also delays going to and from my destination."
Cons: "I dont even know why you are sending me a survey of a flight i didnt even have... Plus, you didnt send me an email to let me know that the flight was canceled, i realizado that once i got to the airport... you should do something about it"
Pros: "The crew was friendly and helpful."
Cons: "There were extra fees for carry on and checked bags, which was not revealed until we printed our boarding passes. In addition, we had to pay to reserve seats. On top of that, I have never sat in such uncomfortable seats. They charged $2.99 for a can of soda on the flight. Finally, they lost our bag, after our flight took an hour longer than it was supposed to."
Cons: "The flight was first cancelled, then I had to wait two days for the next available flight out. Also was charged for my carry on bag. This airline does not offer any complimentary drinks. I will not book this company again, you think your saving a little and end up spending More at the end."
Book cheap flights from Ontario to San Francisco
Recent round-trip flight deals
7/5Wed
nonstopFrontier
1h 25mONT-SFO
7/12Wed
nonstopFrontier
1h 23mSFO-ONT
$48
6/20Tue
nonstopFrontier
1h 26mONT-SFO
6/27Tue
nonstopFrontier
1h 25mSFO-ONT
$54
7/11Tue
nonstopFrontier
1h 25mONT-SFO
7/15Sat
nonstopFrontier
1h 30mSFO-ONT
$57
6/20Tue
nonstopFrontier
1h 26mONT-SFO
6/23Fri
nonstopFrontier
1h 25mSFO-ONT
$59
7/26Wed
nonstopFrontier
1h 25mONT-SFO
8/5Sat
nonstopFrontier
1h 30mSFO-ONT
$60
6/20Tue
nonstopFrontier
1h 26mONT-SFO
6/21Wed
nonstopFrontier
1h 25mSFO-ONT
$62
6/22Thu
nonstopFrontier
1h 26mONT-SFO
6/26Mon
nonstopFrontier
1h 21mSFO-ONT
$63
7/20Thu
nonstopFrontier
1h 24mONT-SFO
7/22Sat
nonstopFrontier
1h 30mSFO-ONT
$64
7/12Wed
nonstopFrontier
1h 25mONT-SFO
7/25Tue
nonstopFrontier
1h 23mSFO-ONT
$65
6/22Thu
nonstopFrontier
1h 26mONT-SFO
6/23Fri
nonstopFrontier
1h 25mSFO-ONT
$67
7/29Sat
nonstopFrontier
1h 27mONT-SFO
8/1Tue
nonstopFrontier
1h 23mSFO-ONT
$68
7/1Sat
nonstopFrontier
1h 26mONT-SFO
7/4Tue
nonstopFrontier
1h 25mSFO-ONT
$70
6/20Tue
nonstopFrontier
1h 26mONT-SFO
6/23Fri
nonstopFrontier
1h 25mSFO-ONT
$73
7/2Sun
nonstopFrontier
1h 26mONT-SFO
7/7Fri
nonstopFrontier
1h 30mSFO-ONT
$75
7/10Mon
nonstopFrontier
1h 25mONT-SFO
7/11Tue
nonstopFrontier
1h 23mSFO-ONT
$76
6/18Sun
nonstopFrontier
1h 26mONT-SFO
6/22Thu
nonstopFrontier
1h 21mSFO-ONT
$77
9/2Sat
nonstopFrontier
1h 25mONT-SFO
9/4Mon
nonstopFrontier
1h 23mSFO-ONT
$78
8/14Mon
nonstopFrontier
1h 25mONT-SFO
8/21Mon
nonstopFrontier
1h 23mSFO-ONT
$80
6/24Sat
nonstopFrontier
1h 26mONT-SFO
6/29Thu
nonstopFrontier
1h 21mSFO-ONT
$81
7/1Sat
nonstopFrontier
1h 26mONT-SFO
7/2Sun
nonstopFrontier
1h 25mSFO-ONT
$83
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Recent one-way flight deals
6/14Wed
nonstopFrontier
1h 24mONT-SFO
$24
6/14Wed
nonstopFrontier
1h 24mONT-SFO
$26
6/22Thu
nonstopFrontier
1h 26mONT-SFO
$28
6/29Thu
nonstopFrontier
1h 26mONT-SFO
$31
7/15Sat
nonstopFrontier
1h 27mONT-SFO
$34
6/15Thu
nonstopFrontier
1h 26mONT-SFO
$35
7/8Sat
nonstopFrontier
1h 27mONT-SFO
$36
6/13Tue
nonstopFrontier
1h 26mONT-SFO
$39
6/17Sat
nonstopFrontier
1h 26mONT-SFO
$40
6/30Fri
nonstopFrontier
1h 26mONT-SFO
$41
8/12Sat
nonstopFrontier
1h 27mONT-SFO
$43
7/2Sun
nonstopFrontier
1h 26mONT-SFO
$44
8/25Fri
nonstopFrontier
1h 25mONT-SFO
$45
7/27Thu
nonstopFrontier
1h 24mONT-SFO
$46
6/24Sat
nonstopFrontier
1h 26mONT-SFO
$47
6/24Sat
nonstopFrontier
1h 26mONT-SFO
$50
6/16Fri
nonstopFrontier
1h 26mONT-SFO
$51
8/6Sun
nonstopFrontier
1h 23mONT-SFO
$54
7/5Wed
nonstopUnited Airlines
1h 21mONT-SFO
$94
9/27Wed
1 stopAmerican Airlines
5h 59mONT-SFO
$105
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Ontario - San Francisco Flights
Departure:
Ontario (ONT)United States
Destination:
San Francisco (SFO)United States
Return flight deals:
Cabin classes:
$595
$651
$308
$45