Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

ONT - SFO

$34 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 5/9. 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 5/27
Mon 6/3

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 44,335,567 times on KAYAK, and here is why:

Save 22% 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.

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:59 pm - 7:27 pmONT-SFO
1h 28mnonstop
10:10 am - 11:39 amSFO-ONT
1h 29mnonstop
$48Frontier
Find Deal
Sat, May 4 - Tue, May 7
5:59 pm - 7:27 pmONT-SFO
1h 28mnonstop
10:10 am - 11:39 amSFO-ONT
1h 29mnonstop
$52Frontier
Find Deal
Sat, May 11 - Tue, May 14
7:39 am - 9:07 amONT-SFO
1h 28mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$53Frontier
Find Deal
Tue, May 21 - Tue, May 28
7:53 am - 9:20 amONT-SFO
1h 27mnonstop
10:15 am - 11:44 amSFO-ONT
1h 29mnonstop
$56Frontier
Find Deal
Tue, May 14 - Wed, May 15
7:39 am - 9:07 amONT-SFO
1h 28mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$57Frontier
Find Deal
Sat, May 18 - Sun, May 19
7:39 am - 9:07 amONT-SFO
1h 28mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$58Frontier
Find Deal
Sat, May 18 - Sun, May 19
7:39 am - 9:07 amONT-SFO
1h 28mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$59Frontier
Find Deal
Tue, May 28 - Wed, May 29
7:53 am - 9:20 amONT-SFO
1h 27mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$61Frontier
Find Deal
Tue, May 14 - Wed, May 29
5:59 pm - 7:27 pmONT-SFO
1h 28mnonstop
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
$62Frontier
Find Deal
Sat, May 11 - Sat, May 18
6:00 am - 1:12 pmONT-SFO
7h 12m2 stops
5:15 am - 6:39 amSFO-ONT
1h 24mnonstop
Thu, May 30 - Wed, Jun 5

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.

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

The average price of all flights from Ontario to San Francisco clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to San Francisco on a Tuesday and more expensive on a Sunday. On your return trip to Ontario, you should consider flying back on a Monday, and avoid Sundays for better deals.

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 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 February, where tickets cost $127 on average. On the other hand, the most expensive months are November and June, where the average cost of tickets is $167 and $158 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
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 83 days before departure.

Which airlines fly non-stop between Ontario and San Francisco?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Ontario to San Francisco.
There are 2 airlines that fly nonstop from Ontario to San Francisco. They are Frontier and United Airlines. The cheapest airline for this route is Frontier, with the best one-way deal found costing $40. On average, the best prices for this route can be found at Frontier.

How many flights are there between Ontario and San Francisco per day?

Each day, there are between 4 and 6 nonstop flights that take off from Ontario and land in San Francisco, with an average flight time of 1h 28m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 35 flights. The most frequent day of departure is Saturday, when 17% of all weekly flights depart. The fewest flights depart on a Wednesday.

Which cabin class options are there for flights between Ontario and San Francisco?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Ontario to San Francisco take?

A direct flight to San Francisco will take on average 1h 20m to travel the 363 miles flying distance from Ontario.

What’s the earliest departure time from Ontario to San Francisco?

Early birds can take the earliest flight from Ontario at 5:50 am and will be landing in San Francisco at 7:15 am.

What’s the latest departure time from Ontario to San Francisco?

If you prefer to fly at night, the latest flight from Ontario to San Francisco jets off at 8:50 pm and lands at 10:12 pm.

Good to know

Low season

January

High season

October

Cheapest flight

$34
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 13% 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 $34 for a one-way ticket and $48 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?

    All the following airlines offer inflight Wi-Fi service on the Ontario to San Francisco flight route: JetBlue, Alaska Airlines, Delta, American Airlines, Japan Airlines, and Lufthansa.

  • 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to San Francisco are Alaska Airlines and United Airlines. With an average price for the route of $114 and an overall rating of 8.0, Alaska Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $245 and an overall rating of 7.4.

  • 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

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 $39 or less one-way and $71 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 non-stop from Ontario to San Francisco?

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

Nonstop departures

Ontario to San Francisco

Monday

Air Canada, Emirates, Frontier, +1 more

Air Canada, Emirates, +2 more

Tuesday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Wednesday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Thursday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Friday

Air Canada, Emirates, Frontier, +1 more

Air Canada, Emirates, +2 more

Saturday

Air Canada, Emirates, Frontier, +1 more

Air Canada, Emirates, +2 more

Sunday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

See more direct flights

Nonstop returns

San Francisco to Ontario

Monday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Tuesday

Air Canada, Copa Airlines, Frontier, +1 more

Air Canada, Copa Airlines, +2 more

Wednesday

Air Canada, Copa Airlines, Frontier, +1 more

Air Canada, Copa Airlines, +2 more

Thursday

Air Canada, Copa Airlines, Frontier, +1 more

Air Canada, Copa Airlines, +2 more

Friday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Saturday

Air Canada, Frontier, United Airlines

Air Canada, Frontier, +1 more

Sunday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 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 75 reviews
8.9crew
8.3boarding
8.1comfort
6.4entertainment
6.7food
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

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.

dont re-route to San Jose. Re-route to closer airport. Provide shuttle bus to go to SFO, not just LYFT vouchers.

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!!

This was a short flight with many open seats. Overhead space is limited and there are no screens in the seat back. But overall the flight was comfortable and fast.

Poor experience. 4 hour delay. 2 hours because of weather and runway construction at SFO. But gate logistics were a mess (gate was used by an unsigned flight to SAN first (!) ... lots of time spent weight balancing the flight because of an inoperable baggage hold (initial loading should have taken that into account, since plane had been flying that way that day) ... and then plane had to go back to gate for more fuel because of SFO delays (easily could have been done - and foreseen - while reweighting the plane). Airline came across as extremely disorganized. Note: on-board experience was fine ...

I think in 6:15 hrs flight the airlines should give some meal and not just couple of cookies People reach their homes at around 12 mid night and then they have to make dinner and eat I started my home at around 5 o clock and no food till 12 midnight You should give some reasonable meal in flight Thanks

The only options for beverages were water and apple juice. When did that happen?

Pretty terrible. The aisles on this flight were too narrow so we had to carry our baby, care seat, luggage, travel stroller step by step down the aisle slowing down a lot of passengers in the process. Not only was this a safety hazard but remember that scene from game of thrones where Cersei walks naked through the streets? It felt about as excruciating as that except both me and my husband were carrying 50lbs of weight while everyone from the flight attendants and passengers dolled out comments like “that stroller doesn’t fit in the overhead compartment and you should check it at the gate” when it is a travel stroller that absolutely fits and did fit in the overhead compartment. The flight said it was 30 min delayed but in actuality we did not take off until 1.5 hours past the original time. It was absolutely terrible. Alaska also charged us 200 dollars just in baggage fees even tho we took the time to buy two check on baggages via their app and bought an extra seat for our child and they still refused to overlook our first time flying with them. Everyone in general looked super miserable and traveling with them with a child is pretty much untenable. Lastly I originally thought I had booked an AM flight for my family but it was a PM flight which I knew was not going to end well since we had a 1.5 year old with us on a flight that gets in 9p. I ended up calling Alaska to try to change the first leg for a change fee, and would even have accepted half of a refund to book a completely different flight but of course they refused and absolutely allowed no flexibility to plans so I guess my revenge was our baby cried for 3 out of the four hour flight and hopefully convinced every miserable person on that flight to never fly Alaska again 🤷🏻‍♀️

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

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.

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

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

My experience is based on one crew member. I had found my seat and sat down but there was a gentleman to claimed to the flight attendant I was in his seat. She then came to me and curtly said, "I need your ticket!" No hi, no excuse me may I see your boarding pass? NOTHING! I was taken aback by her attitude and she repeated herself, "your ticket?!?!" I calmly responded with ok, here you go. Only to discover the gentleman was looking at the wrong boarding pass. She gave me back my ticket with no apology. She then was curt with another man who was putting his coat in the overhead bin, already helped by another flight attendant who said it was fine. She realizes it's ok and then asks him if he drinks. The look on the man's face was priceless. She said she was going to comp him drinks. He gets offered a comp drink for a coat as well as an apology, and I got no apology.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

Delays, excuses, delays, and more delays. This company is BROKEN.

Horrible. Delayed on both planes several times. No attempt to fix it

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

See my previous comment which is mostly about our flight from Phoenix to SFO

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.
5/9Thu
nonstopFrontier
1h 27mONT-SFO
$34
6/29Sat
nonstopFrontier
1h 28mONT-SFO
$37
5/26Sun
1 stopAmerican Airlines
13h 49mONT-SFO
$116
5/21Tue
2 stopsAlaska Airlines
15h 35mONT-SFO
$163
5/1Wed
1 stopSouthwest
4h 40mONT-SFO
$171
5/11Sat
nonstopUnited Airlines
1h 28mONT-SFO
$175
5/25Sat
2 stopsAlaska Airlines
11h 35mONT-SFO
$177
5/1Wed
3 stopsSouthwest
10h 15mONT-SFO
$207
5/27Mon
nonstopUnited Airlines
1h 25mONT-SFO
$219
5/3Fri
1 stopAmerican Airlines
5h 46mONT-SFO
$230

Search by stops

Search by airline

Search by price

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.
5/1Wed
nonstopFrontier
1h 27mONT-SFO
5/7Tue
nonstopFrontier
1h 29mSFO-ONT
$89
5/2Thu
nonstopFrontier
1h 27mONT-SFO
5/9Thu
nonstopFrontier
1h 29mSFO-ONT
$99
4/29Mon
multi-stopSouthwest
3h 35mONT-SFO
4/30Tue
multi-stopSouthwest
4h 40mSFO-ONT
$337
4/30Tue
multi-stopSouthwest
4h 40mONT-SFO
4/30Tue
multi-stopSouthwest
3h 40mSFO-ONT
$341
5/1Wed
nonstopUnited Airlines
1h 29mONT-SFO
5/8Wed
nonstopUnited Airlines
1h 34mSFO-ONT
$454
5/1Wed
nonstopUnited Airlines
1h 29mONT-SFO
5/2Thu
nonstopUnited Airlines
1h 38mSFO-ONT
$468
4/28Sun
multi-stopAmerican Airlines
5h 46mONT-SFO
4/28Sun
multi-stopAmerican Airlines
5h 40mSFO-ONT
$696
5/2Thu
multi-stopAmerican Airlines
7h 56mONT-SFO
5/2Thu
multi-stopAmerican Airlines
5h 40mSFO-ONT
$772
4/30Tue
multi-stopAlaska Airlines
14h 29mONT-SFO
5/1Wed
multi-stopAlaska Airlines
16h 37mSFO-ONT
$1,006
4/30Tue
multi-stopAlaska Airlines
10h 43mONT-SFO
5/1Wed
multi-stopAlaska Airlines
9h 28mSFO-ONT
$1,032

Search by stops

Search by airline

Search by price

Ontario - San Francisco Flights

Departure:

Ontario (ONT)United States

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Ontario

Cabin classes:

$407
$448
$339
$39