ONT - SFO

$21 Find Cheap Flights from Ontario to San Francisco

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 departing on 2/16. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to San Francisco.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to San Francisco.
In the last 7 days travelers have searched 41,299,237 times on KAYAK, and here is why:

Save 23% 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.

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Cheap Flight Deals from Ontario to San Francisco (ONT-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Ontario to San Francisco

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to San Francisco.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:00 am - 7:35 amONT-SFO
1h 35mnonstop
9:59 pm - 11:24 pmSFO-ONT
1h 25mnonstop
$38Frontier
Find Deal
Fri, Feb 7 - Mon, Feb 10
6:45 am - 8:20 amONT-SFO
1h 35mnonstop
8:06 am - 9:34 amSFO-ONT
1h 28mnonstop
$39Frontier
Find Deal
Sun, Feb 9 - Sun, Feb 16
6:15 am - 7:46 amONT-SFO
1h 31mnonstop
4:35 pm - 6:04 pmSFO-ONT
1h 29mnonstop
$57United Airlines
Find Deal
Sun, Jan 26 - Wed, Jan 29
10:47 am - 12:20 pmONT-SFO
1h 33mnonstop
7:00 pm - 8:29 pmSFO-ONT
1h 29mnonstop
$117United Airlines
Find Deal
Sat, Feb 1 - Mon, Feb 3
2:35 pm - 9:35 pmONT-SFO
7h 00m1 stop
12:10 pm - 8:15 pmSFO-ONT
8h 05m2 stops
$122Southwest
Find Deal
Fri, Jan 31 - Sun, Feb 2
12:34 pm - 6:02 pmONT-SFO
5h 28m1 stop
8:20 am - 6:13 pmSFO-ONT
9h 53m2 stops
Wed, Feb 5 - Sat, Feb 8
8:04 am - 1:49 pmONT-SFO
5h 45m1 stop
8:20 am - 6:13 pmSFO-ONT
9h 53m2 stops
Sat, Feb 1 - Sat, Feb 8
5:50 am - 9:35 amONT-SFO
3h 45m1 stop
3:20 pm - 10:05 pmSFO-ONT
6h 45m2 stops
$192Southwest
Find Deal
Fri, Feb 28 - Mon, Mar 3
4:06 pm - 9:11 amONT-SFO
17h 05m1 stop
8:20 am - 6:13 pmSFO-ONT
9h 53m2 stops
$218Alaska Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 8
5:44 pm - 9:11 amONT-SFO
15h 27m2 stops
4:19 pm - 10:38 amSFO-ONT
18h 19m2 stops
$223Alaska Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 8

Flights from Ontario to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to San Francisco to help you find the cheapest flights, the best time to fly and much more.
Find cheap flights to San Francisco
Find cheap flights to San Francisco

Planning a trip from Ontario to San Francisco? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Ontario to San Francisco?

The average price of all round-trip flights from Ontario to San Francisco clicked on KAYAK for each day over the last 12 months.
For Ontario to San Francisco, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from San Francisco back to Ontario, the best deals are generally found on Wednesday, with Friday being the most expensive.

What is the cheapest month to fly from Ontario to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to San Francisco is July, where tickets cost $85 (return) on average. On the other hand, the most expensive months are February and January, where the average cost of round-trip tickets is $186 and $156 respectively.

Can I save money by flying with a layover from Ontario to San Francisco?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of $355, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Ontario to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Ontario to San Francisco, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

January

High season

May

Cheapest flight

$21
Best time to beat the crowds but there is an average 32% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Ontario to San Francisco

When to book flights from Ontario to San Francisco

Are your dates flexible? Find out the best times to travel from Ontario to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to San Francisco

  • What other airports can I board my flight to SFO other than ONT?

    Apart from ONT, Ontario is served by John Wayne Airport (SNA) and Long Beach Airport (LGB). Of the two, SNA is closer to Ontario than LGB making it the best option if you are looking for something close-by.

  • Where can I breastfeed my child at ONT?

    If you want to breastfeed your baby at ONT, you can do so in one of ONT's two operational nursing rooms. In terminal 2 there’s a nursing room located across from gate 207 and in terminal 4 there is one found across gate 407.

  • Does SFO have a place I can relax once my flight lands?

    Once you land at SFO, you can enjoy the rejuvenating services at one of the three locations operated by XpresSpa. In terminal 3, XpresSpa has a locationnear boarding area E, while the other is found in the boarding area F. The third location is found in the international terminal boarding area G.

  • Can I rent a car at SFO?

    At SFO, you can easily rent a car once you land. To do so, you’ll have to visit the airport’s Car Rental Center, which houses rental agencies like Thrifty, Enterprise, Budget, and Dollar. To get to the airport’s Car Rental Center, you’ll board its AirTrain Blue Line which will take you right there.

  • What is the cheapest flight from Ontario to San Francisco?

    In the last 3 days, the lowest price for a flight from Ontario to San Francisco was $21 for a one-way ticket and $38 for a round-trip.

  • Do I need a passport to fly between Ontario and San Francisco?

    A passport is not required to fly from Ontario to San Francisco.

  • Which airlines offer Wi-Fi service onboard planes from Ontario to San Francisco?

    Delta, Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the Ontario to San Francisco flight route.

  • Which aircraft models fly most regularly from Ontario to San Francisco?

    The Airbus A320neo is the aircraft model that flies most regularly on the Ontario to San Francisco flight route.

  • Which airline alliances offer flights from Ontario to San Francisco?

    Star Alliance is the only airline alliance operating flights between Ontario and San Francisco.

  • On which days can I fly direct from Ontario to San Francisco?

    There are nonstop flights from Ontario to San Francisco on a daily basis.

  • Which is the best airline for flights from Ontario to San Francisco, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to San Francisco are Alaska Airlines and Delta. With an average price for the route of $162 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $196 and an overall rating of 8.0.

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco 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?

    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 with an airline and back to Ontario with another airline. Booking your flights between Ontario and SFO can sometimes prove cheaper using this method.

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

    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 from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Ontario to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $83 or less one-way and $131 or less round-trip.
  • 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.
See more tips

Prefer to fly direct from Ontario to San Francisco?

Find which airlines fly direct from Ontario Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Ontario to San Francisco

Monday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Tuesday

Air Canada, Copa Airlines, Emirates, +1 more

Air Canada, Copa Airlines, +2 more

Wednesday

Air Canada, Copa Airlines, Emirates, +1 more

Air Canada, Copa Airlines, +2 more

Thursday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Friday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Saturday

Air Canada, Copa Airlines, Emirates, +1 more

Air Canada, Copa Airlines, +2 more

Sunday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

See more direct flights

Direct returns

San Francisco to Ontario

Monday

Air Canada, Emirates, Frontier, +1 more

Air Canada, Emirates, +2 more

Tuesday

Air Canada, Emirates, United Airlines

Air Canada, Emirates, +1 more

Wednesday

Air Canada, Emirates, United Airlines

Air Canada, Emirates, +1 more

Thursday

Air Canada, Emirates, Frontier, +2 more

Air Canada, Emirates, +3 more

Friday

Air Canada, Emirates, Frontier, +2 more

Air Canada, Emirates, +3 more

Saturday

Air Canada, Emirates, United Airlines

Air Canada, Emirates, +1 more

Sunday

Air Canada, Emirates, Frontier, +1 more

Air Canada, Emirates, +2 more

See more direct flights
See more direct flights

Top 5 airlines serving from Ontario to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Ontario to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to San Francisco? 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 142 reviews
6.6Entertainment
8.2Comfort
8.3Boarding
6.7Food
8.8Crew
Airline reviews

Purposely delayed the flight by 2 hours and 58 minutes so that they would not have to give me the FAA mandated refund for a delay of 3 hours. Offered flight credit instead. All that is offered on board is water and coffee, everything else costs money. They charge you for carry on and checked bags. Would not fly again.

4.0 OkayAnonymous, Jan 2025BDL - ORF
Read more Breeze Airways reviews

Purposely delayed the flight by 2 hours and 58 minutes so that they would not have to give me the FAA mandated refund for a delay of 3 hours. Offered flight credit instead. All that is offered on board is water and coffee, everything else costs money. They charge you for carry on and checked bags. Would not fly again.

nice flight. no frills but a 3 hour flight I caught up on my sleep. Stan O

First time flying Breeze, was very impressed. I will use Breeze again.

The flight was rescheduled and canceled. I had to go with another airline last minute to honor my school commitment. The reimbursement is a joke -$150 for a one way plane ticket.

The flight itself was A+ but boarding sucked. They boarded all passengers at once, and as a result I did not get to put my carryon in an overhead bin near me so I had to wait till near the end to deplane.

Really appreciate the great crew and pilot for keeping us informed about everything going on, updates, etc. It's so reassuring just to know (for example) why there might be a delay, etc. I'm very satisfied with the excellent service.

This was my first time flying Breeze. The plane was one of the nicer planes I have been on. The flight attendants were friendly and helpful. I will fly them again.

Well, Kayak should have communicated with Breeze that when I purchased the ticket, Kayak should have relayed that I had one carry on as part of my ticket purchase. So, KAYAK, tell the airlines!

Why do I need to spend $$$ to sit together as a family? It’s beyond frustrating, we were all sitting apart.

Easy boarding and great communication, smooth flight- all was great!

All 4 members of my family found the seats terribly uncomfortable. 2 of us suffered from back issues the next few days.

Delays, delays, delays.... (and) Told no room for carry on after boarding B Group and told to drop off our carry on at door to be checked in instead. There was plenty of room left in the overheads above our seats right up to the end of boarding!!!!

Like I said before the internet was shut off so there was little to do on this leg of the flight.

Nice, competent people and airline. Did the same flight last year and it is a pleasure. Only part of the experience that could be improved is the JFK terminal. Hopefully that one is part of the renovation.

Our flight was diverted to Spokane, WA bc our crew timed out. Then we were flown to San Francisco

Your staff said the call button is for emergencies only now? Unreal. Also every one who welcomed me aboard was staring at their phone. Why even bother..

I was able to upgrade to first class, which was great. Food and drinks were underwhelming compared to other first class flights I have taken.

Cross country flight ... there was no entertainment system... for any flight over 4 hours there should be some entertainment. There were 2 drink and cookie services only (which is ok, but not special)

I flew from San Francisco to Honolulu on Hawaiian Airlines. The flight was operated by Alaska Airlines. Everything was fantastic. On the return flight from Honolulu to San Francisco, boarding was chaotic. They called each boarding group 1 through 6 very quickly, and everyone just ran and got in a very long line. There was no enforcement of boarding groups. Carry-on rules were not followed, and by the time I boarded the plane, there was barely any overhead space. I was boarding group 4. The crew was very professional, and the Hawaiian Airlines terminal in Honolulu was beautiful. I wish the rest of Honolulu Airport looked like the Hawaiian Airlines Terminal.

There were no movies, have to pay for internet, only pretzel, cookie, & a beverage for a 7 hr. flight..

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

Everything good until we waited for jet bridge at SFO. Then pilot gets on speaker & said it won’t reach plane- too short, need to go to different gate. Then 5 min later, adjusted plane/jetbridge & all ok?!?

We had to wait almost an hour for the wheelchair porter to be ready to pick up my mother. And when she arrived in Newark airport the porter was not there and she started walking with her cane and her poor mobility. When the Newark porter found her they didn't want to transfer her bags to the wheelchair for her.

Great onboard crew. Boarding was a zoo, I got in line before pre boarding in Group 2, still had my bag force checked. WiFi was glitchy all flight. Seat and bathroom are both tiny unless you pay $$$ for first class.

Cabin was pitch black, even during meal service. The reading lights for seat 2E/F did not work, and seat 2E did not recline.

Was realllly smooth. It was delayed but we were well informed.

Delayed by 2.5hrs any longer and they would’ve had to honour their own policy for breaking their own rules and regs. Not cool, especially when I have an infant child that needs to stay on a routine and they get schedules.

To san Francisco it was ok. From sf to Manila it was horrible

We got to fly on the new airplane. Much better as it’s roomier and cleaner than before. Most Importantly it’s much more comfortable. I still can’t move the seat back but the extra space made up for it. I didn’t taste the food or drinks because they charge for everything so I didn’t bother. I didn’t experience the entertainment because I downloaded my own movies on my phone. The crew was great. The flight itself was smooth . No complaints.

I was comfortable because I upgraded. I would not have been comfortable in economy. It was a short flight so there was limited food service and no inflight entertainment.

I thought since I upgraded my seat I would get some perks. Free water, free snacks. Free carry on luggage.

It’s ridiculous to pay for carry-on luggage. I also wasn’t given an option to specify I have carry on bag at time of ticket purchase. I also could not specify I have carry on luggage at time of online check-in.

Delayed fight LAS to LAX. OK, fog in LA, not your fault. But all your staff, onboard in in lounge, speak so fast, enunciate so poorly and often have a accent that it is impossible to understanding anything they are saying.

The gate area was terrible at San Diego airport -way too crowded in a small space. Since my husband was driving to our destination, we did not have to take any luggage so my kids and I only had backpacks. Therefore everything was easy and smooth. And we didn’t have to pay up charges for everything and it was a short flight. I tried table was broken and it was a little cramped, but it was fine for what we needed. I probably would not fly spirit on a longer flight and if I had to take baggage.

Boarding procedure is horribly slow. You charge me to check a bag and would not let me carry it on. Charged me to simply select a seat. Charged me for water. Charged me for every little thing on top of paying for an expensive ticket. Your seats are terrible. So uncomfortable, they don’t recline. No WiFi, no way to charge my phone. No entertainment. I mean you Offer noting and you charge for everything. Why would anyone want to fly with you again?

The staff from LAX to New Orleans were rude but the staff from New Orleans to LAX were nice!

Paid extra for a “comfy seat” which was anything but!

It was cancelled unexpectedly so we rented a car and drove home.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

I was surprised that all baggage, including carry on, were charged. Each additional bag went up in cost. Really disappointed in the additional costs.

It was a redeye flight, so every passenger just wanted to sleep, but through the entire flight, the flight crew made announcements over the loudspeaker at maximum volume every few minutes making sleep impossible. For example: it’s 2am, and the crew decides to give an extremely detailed announcement about snacks and beverages for sale. And 3am is the perfect time to wake up everyone with a lengthy announcement about how to get a coffee refill and how to take advantage of new offer from frontier for a credit card.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

With frontier you get what you pay for. The flight was two hours late. It’s a tight fit for the number of people they bring but you get to where you’re going cheap. Sometimes that’s more important than a nifty drink and cool TV..

Charges unexpected. For seat that didnt recline. Please reverse extra seat and carryon charge. Bad business that is a bait and switch.

We had an awful experience getting our bags checked in. Frontier’s check in on the app manipulated us into buying the business package because that was the only option available for a checked bag which included two checked bags per person which we did not need. Upon arriving to the airport, we stood in line for what seemed like forever at the baggage check in and there was no one available at the counter. We were first in line and we were afraid we were going to miss our flight due to the baggage attendant being late. After realizing there were a lot of other people waiting at the baggage check in and no one available. I reached out to Frontier and could not get any customer service so I had to call the airport to page the baggage attendant to send someone to the counter to check in our bags before we were able to go through security , I finally spoke to the attendant at the counter and explained to her that we had to pay for two checked bags person a total of six bags when we only had a total of three bags between three people she said to reach out to Frontier and they would issue a refund for the three bags that we paid for and did not need. I reached out to Frontier which I was not able to reach anybody by phone so I had to go through their automated chat feature, which sent me around in circles until I finally reached a representative to assist me. I explained to them what happened and they explained that they were not able to assist me. I continued to push the issue with them as this was very frustrating and they finally put in a customer service ticket where we were issued a flight credit and we were so disappointed because after this experience, we NEVER want to fly Frontier again, and we do not want a credit that we will not use. Frontier charged us almost $500 for us to check three bags which is absolutely absurd! The customer service agents were not able to offer anything else other than a flight credit and I do not feel like my frustrations were truly heard , we will never use Frontier Airlines again ! Truly Theft by Manipulation! They should be ashamed!

I couldn’t check in because the app didn’t work. It took 3 Frontier employees at the counter to get me checked in. Flight left 3 hours after departure time

Book cheap flights from Ontario to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to San Francisco found on KAYAK in the last 72 hours.
2/16Sun
nonstopFrontier
1h 36mONT-SFO
$21
4/17Thu
nonstopFrontier
1h 41mONT-SFO
$24
2/25Tue
nonstopUnited Airlines
1h 33mONT-SFO
$59
2/10Mon
1 stopSouthwest
7h 00mONT-SFO
$64
1/22Wed
nonstopUnited Airlines
1h 31mONT-SFO
$69
2/4Tue
2 stopsAlaska Airlines
10h 07mONT-SFO
$97
2/10Mon
2 stopsAlaska Airlines
13h 16mONT-SFO
$102
2/8Sat
1 stopDelta
6h 19mONT-SFO
$122
2/17Mon
1 stopSouthwest
3h 45mONT-SFO
$140
3/12Wed
2 stopsDelta
9h 43mONT-SFO
$212

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Last minute flights from Ontario to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to San Francisco that are departing in the next 10 days.
1/13Mon
nonstopFrontier
1h 35mONT-SFO
1/19Sun
nonstopFrontier
1h 25mSFO-ONT
$58
1/12Sun
nonstopFrontier
1h 35mONT-SFO
2/16Sun
nonstopFrontier
1h 28mSFO-ONT
$63
1/12Sun
nonstopFrontier
1h 35mONT-SFO
1/19Sun
nonstopFrontier
1h 25mSFO-ONT
$67
1/16Thu
nonstopUnited Airlines
1h 31mONT-SFO
1/23Thu
nonstopUnited Airlines
1h 26mSFO-ONT
$127
1/16Thu
nonstopUnited Airlines
1h 31mONT-SFO
1/18Sat
nonstopUnited Airlines
1h 29mSFO-ONT
$153
1/15Wed
multi-stopSouthwest
3h 45mONT-SFO
1/19Sun
multi-stopSouthwest
6h 50mSFO-ONT
$277
1/15Wed
multi-stopSouthwest
3h 45mONT-SFO
1/19Sun
multi-stopSouthwest
6h 20mSFO-ONT
$282
1/13Mon
nonstop
1h 35mONT-SFO
1/20Mon
multi-stop
14h 29mSFO-ONT
$286
1/16Thu
multi-stopAlaska Airlines
14h 17mONT-SFO
1/20Mon
multi-stopAlaska Airlines
14h 03mSFO-ONT
$403
1/14Tue
multi-stopAlaska Airlines
19h 08mONT-SFO
1/22Wed
multi-stopAlaska Airlines
20h 27mSFO-ONT
$413

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Everything you need to know for your flight from Ontario to San Francisco

Information on your arrival and departure airports

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