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

ONT - SFO

$23 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 8/20. 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
Sat 8/24
Sat 8/31

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 50,552,696 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.

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
1:32 pm - 3:07 pmONT-SFO
1h 35mnonstop
1:25 pm - 2:53 pmSFO-ONT
1h 28mnonstop
$39Frontier
Find Deal
Tue, Sep 17 - Sat, Sep 28
1:32 pm - 3:07 pmONT-SFO
1h 35mnonstop
1:20 pm - 2:48 pmSFO-ONT
1h 28mnonstop
$42Frontier
Find Deal
Tue, Sep 17 - Wed, Sep 25
3:48 pm - 5:12 pmONT-SFO
1h 24mnonstop
4:07 pm - 5:36 pmSFO-ONT
1h 29mnonstop
$43Frontier
Find Deal
Wed, Sep 18 - Tue, Sep 24
1:32 pm - 3:07 pmONT-SFO
1h 35mnonstop
1:20 pm - 2:48 pmSFO-ONT
1h 28mnonstop
$44Frontier
Find Deal
Tue, Sep 17 - Fri, Sep 27
1:32 pm - 3:07 pmONT-SFO
1h 35mnonstop
1:30 pm - 2:58 pmSFO-ONT
1h 28mnonstop
$45Frontier
Find Deal
Tue, Sep 17 - Mon, Sep 30
3:53 pm - 5:17 pmONT-SFO
1h 24mnonstop
4:07 pm - 5:36 pmSFO-ONT
1h 29mnonstop
$46Frontier
Find Deal
Sat, Sep 21 - Tue, Sep 24
3:48 pm - 5:12 pmONT-SFO
1h 24mnonstop
1:30 pm - 2:58 pmSFO-ONT
1h 28mnonstop
$47Frontier
Find Deal
Wed, Sep 18 - Thu, Sep 26
6:45 pm - 8:18 pmONT-SFO
1h 33mnonstop
11:19 pm - 12:45 amSFO-ONT
1h 26mnonstop
$174United Airlines
Find Deal
Wed, Sep 4 - Wed, Sep 4
5:01 pm - 10:33 pmONT-SFO
5h 32m1 stop
12:10 pm - 6:28 pmSFO-ONT
6h 18m1 stop
$200American Airlines
Find Deal
Fri, Sep 20 - Tue, Sep 24
6:20 am - 7:40 amONT-SFO
1h 20mnonstop
10:45 am - 12:15 pmSFO-ONT
1h 30mnonstop
$214United Airlines
Find Deal
Sat, Aug 17 - Sat, Aug 17

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 Wednesday. On your return trip to Ontario, you should consider flying back on a Monday, and avoid Fridays 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 April, where tickets cost $118 on average. On the other hand, the most expensive months are March and November, where the average cost of tickets is $158 and $158 respectively.

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

The average 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 $723, prices are generally cheapest when you fly direct.

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 158 days before departure.

Which airlines provide the cheapest flights from Ontario to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Ontario to San Francisco found on KAYAK was with Frontier for $23. Frontier proposed a round-trip connection from $39 and United Airlines from $174.

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 $38. 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 3 and 5 nonstop flights that take off from Ontario and land in San Francisco, with an average flight time of 1h 27m. The most common departure time is 6:00 pm and most flights take off in the morning. Each week, there are 30 flights. The most frequent day of departure is Monday, when 17% of all weekly flights depart. The fewest flights depart on a Sunday.

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 6:17 am and will be landing in San Francisco at 7:44 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 7:48 pm and lands at 9:15 pm.

Good to know

Low season

January

High season

July

Cheapest flight

$23
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 7% 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 $23 for a one-way ticket and $39 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, JetBlue, American Airlines, and Japan 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 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 $129 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 $258 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

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 $49 or less one-way and $58 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 Airport to San Francisco Airport, which days they fly and book direct flights.

Nonstop 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, +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, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 more

Saturday

Air Canada, Copa Airlines, Emirates, +2 more

Air Canada, Copa Airlines, +3 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, 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
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 85 reviews
8.3Boarding
6.8Food
8.9Crew
6.4Entertainment
8.1Comfort
Airline reviews

Even though the flight was delayed my overall experience was great!

8.0 ExcellentBrian, Jul 2024TPA - ORF
Read more about Breeze Airways reviews

Even though the flight was delayed my overall experience was great!

The app, website, and boarding passes never updated with gate information. This makes it very difficult at a large airport to guess which terminal to go to to check the screen for your flight. We had a delay and that also was never updated on website, app, or boarding pass. So when those picking people up from flight checked flight status they were told we would be on time which was not the case. With technology available neither of those situations are appropriate and were completely avoidable minus lack of willingness from Breeze to provide accurate and up to date information.

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 landing was a little rough - but a good flight overall! :)

Although the plane was delayed , I appreciate the food credit.

The boarding took an extremely long time, we were taxiing for over an hour, there was no WiFi on the flight, there were many sick people coughing and sneezing without masks and when we got to the gate it took an extra 30 minutes for the crew to open the door because the crew was at the wrong gate.

The issue was not alaska airlines. The ticket you printed was innacurate.

Seat 6F was very good, but had loud engine noise

first class on these new Boeings is horrible, absolutely not worth the money, its bad. I need to find a IAD to SFO with an Airbus like Virgin used to have, that was the best ever. I am now only looking for flights with an Airbus

It was prompt. The only problem was that there are electric outlets at the seats, but they're on a slant, so my computer charger just fell out if I wasn't holding it. Flight attendants were fabulous.

Everything went smoothly, with the exception of a two-hour delay on the return flight, which wasn't the airline's responsibility.

extremely bad. crew at the gate and in flight unprofessional, unfriendly , refusing to offer any help

Glad to have more leg room. There were four restrooms, which was great and they were in decent conditions. Very impressed.

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

Rough day of travel all the way around. Wrong info given to us multiple times and mistakes in their booking making our trip 10 hours longer than planned. I’m bummed because I fly Delta all the time and love them. Mistakes happen. Just bummed that this was a rare trip our whole family was traveling together.

Meh. A late flight meant I missed my connections, and a 2pm LAX arrival turned into gettin in after midnight.

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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

Boarding was efficient. Crew was not pleasant and skipped me during a round of beverage service. Older plane with no seat back screens and I couldn’t connect to wifi or their entertainment offerings.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

The lady at the check in counter wasn't helpful

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

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.

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

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.

After 5 hours of delay, they cancelled the flight. Very disappointed

My flight to LA was cancelled. I waited at the airport for 3 hrs saying it was delayed and then all of a sudden it was cancelled. Frontier only gave me a voucher and refund but could not rebook me. Flights on other airlines were too expensive last minute. I had to drive down to LA and didn’t even take my return flight home since I had to drive. One of the worst airline experiences in my life. It’s crazy how airlines can just upend people’s plans just like that.

Flight was 3 hours late leaving. Poor communication from the staff about delays. Impossible to get in touch with customer service (by design). And it actually didn't come out to be much cheaper than a non-budget airline! Not worth the headache, I'm never flying Frontier again

The flight attendence were extremely rude and I am disabled

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.

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.
8/20Tue
nonstopFrontier
1h 27mONT-SFO
$23
8/13Tue
nonstopFrontier
1h 27mONT-SFO
$24
8/14Wed
nonstopFrontier
1h 27mONT-SFO
$25
10/22Tue
1 stopAmerican Airlines
6h 30mONT-SFO
$99
8/16Fri
nonstopUnited Airlines
1h 20mONT-SFO
$117
8/17Sat
1 stopAmerican Airlines
6h 11mONT-SFO
$118
9/11Wed
2 stopsAlaska Airlines
9h 46mONT-SFO
$141
8/26Mon
nonstopUnited Airlines
1h 27mONT-SFO
$144
9/14Sat
2 stopsAlaska Airlines
11h 35mONT-SFO
$146
7/31Wed
3 stopsSouthwest
11h 35mONT-SFO
$234

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.
7/30Tue
nonstopFrontier
1h 26mONT-SFO
8/2Fri
nonstopFrontier
1h 22mSFO-ONT
$69
7/30Tue
nonstopFrontier
1h 26mONT-SFO
8/6Tue
nonstopFrontier
1h 22mSFO-ONT
$78
7/30Tue
nonstopFrontier
1h 26mONT-SFO
8/1Thu
nonstopFrontier
1h 22mSFO-ONT
$83
7/30Tue
nonstopFrontier
1h 26mONT-SFO
7/31Wed
nonstopFrontier
1h 23mSFO-ONT
$86
7/30Tue
nonstopFrontier
1h 26mONT-SFO
8/4Sun
nonstopFrontier
1h 22mSFO-ONT
$90
7/29Mon
nonstopFrontier
1h 26mONT-SFO
7/31Wed
nonstopFrontier
1h 23mSFO-ONT
$93
7/26Fri
nonstopUnited Airlines
1h 23mONT-SFO
7/29Mon
nonstopUnited Airlines
1h 27mSFO-ONT
$379
7/30Tue
multi-stopAmerican Airlines
6h 36mONT-SFO
7/31Wed
multi-stopAmerican Airlines
5h 57mSFO-ONT
$479
7/26Fri
nonstopUnited Airlines
1h 23mONT-SFO
7/29Mon
nonstopUnited Airlines
1h 27mSFO-ONT
$489
7/27Sat
nonstopUnited Airlines
1h 20mONT-SFO
7/29Mon
nonstopUnited Airlines
1h 27mSFO-ONT
$501

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:

$445
$1,834
$491
$35