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$49 Find cheap flights from San Francisco Bay Area to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 6/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/14
Fri 6/21

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Good to know

Low season

January

High season

May

Cheapest flight

$49
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from San Francisco to Ontario

FAQs for booking flights from San Francisco Bay Area to Ontario

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

    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 San Francisco Bay Area to Ontario.

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

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

    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 Ontario with an airline and back to San Francisco Bay Area with another airline.

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

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

See more FAQs

Prefer to fly non-stop from San Francisco Bay Area to Ontario?

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

Nonstop departures

San Francisco Bay Area to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to San Francisco Bay Area

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines serving from San Francisco Bay Area to Ontario

 
Need help choosing which airline to fly with from San Francisco Bay Area to Ontario? 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 77 reviews
8.3Boarding
8.1Comfort
6.5Entertainment
8.9Crew
6.8Food
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

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.

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

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

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

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

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

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

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.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

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

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

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

Book cheap flights from San Francisco Bay Area to Ontario

Recent round-trip flight deals

5/24Fri
nonstopFrontier
1h 24mSFO-ONT
5/29Wed
nonstopFrontier
1h 28mONT-SFO
$72
5/25Sat
nonstopFrontier
1h 24mSFO-ONT
5/29Wed
nonstopFrontier
1h 28mONT-SFO
$73
6/15Sat
nonstopUnited Airlines
1h 32mSFO-ONT
6/16Sun
nonstopUnited Airlines
1h 25mONT-SFO
$214
7/16Tue
1 stopAlaska Airlines
7h 09mOAK-ONT
7/22Mon
1 stopAlaska Airlines
27h 35mONT-OAK
$312
5/28Tue
1 stopAmerican Airlines
5h 37mSJC-ONT
6/1Sat
1 stopAmerican Airlines
5h 40mONT-SJC
$318
6/18Tue
1 stopAlaska Airlines
7h 09mOAK-ONT
6/19Wed
1 stopAlaska Airlines
13h 00mONT-OAK
$322
6/7Fri
1 stopDelta
17h 52mOAK-ONT
6/9Sun
1 stopDelta
18h 20mONT-OAK
$434
5/28Tue
1 stopAmerican Airlines
5h 37mSJC-ONT
5/30Thu
1 stopAmerican Airlines
5h 40mONT-SJC
$456
7/23Tue
1 stopUnited Airlines
10h 28mSJC-ONT
7/31Wed
1 stopUnited Airlines
12h 24mONT-SJC
$539
5/25Sat
1 stopDelta
15h 49mOAK-ONT
5/29Wed
1 stopDelta
10h 31mONT-OAK
$540

Search by stops

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Recent one-way flight deals

6/15Sat
nonstopFrontier
1h 23mSFO-ONT
$49
5/24Fri
nonstopFrontier
1h 24mSFO-ONT
$52
8/22Thu
nonstopUnited Airlines
1h 26mSFO-ONT
$69
6/18Tue
nonstopUnited Airlines
1h 35mSFO-ONT
$99
8/25Sun
1 stopAmerican Airlines
6h 08mSFO-ONT
$144
6/18Tue
1 stopAlaska Airlines
7h 09mOAK-ONT
$146
6/19Wed
1 stopAlaska Airlines
13h 25mOAK-ONT
$152
5/28Tue
1 stopAmerican Airlines
5h 37mSJC-ONT
$160
6/18Tue
1 stopDelta
11h 25mSJC-ONT
$162
6/22Sat
1 stopDelta
16h 13mSJC-ONT
$182

Search by stops

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Last minute flights from San Francisco Bay Area to Ontario

Last minute flight, train and bus deals

5/19Sun
nonstopFrontier
1h 24mSFO-ONT
5/25Sat
nonstopFrontier
1h 28mONT-SFO
$123
5/16Thu
nonstopFrontier
1h 24mSFO-ONT
5/16Thu
nonstopFrontier
1h 28mONT-SFO
$136
5/18Sat
nonstopUnited Airlines
1h 34mSFO-ONT
5/19Sun
nonstopUnited Airlines
1h 28mONT-SFO
$369
5/17Fri
nonstopUnited Airlines
1h 34mSFO-ONT
5/21Tue
multi-stopUnited Airlines
17h 22mONT-SFO
$446
5/19Sun
multi-stopAmerican Airlines
5h 37mSJC-ONT
5/26Sun
multi-stopAmerican Airlines
5h 25mONT-SJC
$468
5/16Thu
multi-stopAmerican Airlines
5h 37mSJC-ONT
5/17Fri
multi-stopAmerican Airlines
5h 40mONT-SJC
$479
5/20Mon
multi-stopAlaska Airlines
12h 43mOAK-ONT
5/21Tue
multi-stopAlaska Airlines
13h 51mONT-OAK
$762
5/20Mon
multi-stopAlaska Airlines
12h 43mOAK-ONT
5/23Thu
multi-stopAlaska Airlines
11h 26mONT-OAK
$852
5/19Sun
multi-stopDelta
6h 43mSJC-ONT
5/25Sat
multi-stopDelta
6h 55mONT-SJC
$1,299
5/16Thu
multi-stopDelta
6h 23mOAK-ONT
5/19Sun
multi-stopDelta
10h 31mONT-OAK
$1,356

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Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - San Francisco Bay Area

Cabin classes:

$341
$478
$193
$29