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SJC - ONT

$50 Find Cheap Flights from San Jose 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 from San Jose to Ontario departing on 12/9. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Jose to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Jose to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 46,479,581 times on KAYAK, and here is why:

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Cheap Flight Deals from San Jose to Ontario (SJC-ONT)

 
These are the cheapest deals for flights from San Jose to Ontario currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 San Jose to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Jose to Ontario.

Recent one-way flight deals from San Jose to Ontario

Only flying one-way? Below are some of the best one-way flight deals from San Jose to Ontario found on KAYAK recently.

Recent last minute flight deals from San Jose to Ontario

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from San Jose to Ontario.

Recent direct flight deals from San Jose to Ontario

The latest deals for direct flights from San Jose to Ontario so you can sit back and relax without the need for a layover.

Cheap bus & train deals from San Jose to Ontario

Find recent round-trip train or bus tickets from San Jose to Ontario.

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:59 pm - 7:08 amSJC-ONT
9h 09m1 stop
5:45 am - 12:41 pmONT-SJC
6h 56m1 stop
$100Frontier
Find Deal
Sat, Nov 23 - Wed, Nov 27
5:08 pm - 11:08 amSJC-ONT
18h 00m1 stop
4:08 pm - 12:08 pmONT-SJC
20h 00m1 stop
$103Frontier
Find Deal
Thu, Dec 5 - Thu, Dec 12
9:16 am - 11:59 pmSJC-ONT
14h 43m2 stops
11:46 am - 4:18 pmONT-SJC
4h 32m1 stop
Thu, Dec 5 - Mon, Dec 9
6:45 am - 8:00 amSJC-ONT
1h 15mnonstop
6:15 am - 7:35 amONT-SJC
1h 20mnonstop
$198Southwest
Find Deal
Sat, Dec 7 - Wed, Dec 11
6:15 am - 9:04 pmSJC-ONT
14h 49m1 stop
6:00 am - 11:52 amONT-SJC
5h 52m1 stop
$202Alaska Airlines
Find Deal
Sat, Dec 7 - Wed, Dec 11
7:20 am - 12:15 pmSJC-ONT
4h 55m1 stop
5:45 am - 7:00 amONT-SJC
1h 15mnonstop
$207Southwest
Find Deal
Sat, Dec 7 - Sun, Dec 8
7:15 pm - 10:38 amSJC-ONT
15h 23m1 stop
5:44 pm - 9:14 amONT-SJC
15h 30m2 stops
$217Alaska Airlines
Find Deal
Tue, Jan 28 - Tue, Feb 4
1:23 pm - 9:53 amSJC-ONT
20h 30m3 stops
11:46 am - 4:18 pmONT-SJC
4h 32m1 stop
Thu, Dec 5 - Mon, Dec 9
2:07 pm - 6:27 pmSJC-ONT
4h 20m1 stop
12:50 pm - 6:57 pmONT-SJC
6h 07m1 stop
$259American Airlines
Find Deal
Tue, Dec 10 - Sat, Dec 14
6:00 am - 12:06 pmSJC-ONT
6h 06m1 stop
6:10 am - 12:12 pmONT-SJC
6h 02m1 stop
$338American Airlines
Find Deal
Sun, Nov 17 - Tue, Nov 19
2:28 pm - 9:41 pmSJC-ONT
7h 13m1 stop
$50Frontier
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Mon, Dec 9
1:41 pm - 12:04 amSJC-ONT
10h 23m1 stop
$56Frontier
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Thu, Nov 28
9:59 pm - 7:08 amSJC-ONT
9h 09m1 stop
$58Frontier
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Thu, Nov 14
8:00 am - 9:15 amSJC-ONT
1h 15mnonstop
$99Southwest
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Fri, Dec 6
6:15 am - 12:58 pmSJC-ONT
6h 43m1 stop
$101Alaska Airlines
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Tue, Dec 10
10:30 am - 4:54 pmSJC-ONT
6h 24m1 stop
$102Delta
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Wed, Dec 18
8:11 pm - 9:53 amSJC-ONT
13h 42m1 stop
$107Alaska Airlines
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Sat, Dec 14
6:40 am - 10:55 amSJC-ONT
4h 15m1 stop
$108Southwest
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Wed, Dec 18
12:00 pm - 4:41 pmSJC-ONT
4h 41m1 stop
$139American Airlines
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Tue, Dec 24
6:00 am - 12:03 pmSJC-ONT
6h 03m1 stop
$169American Airlines
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Wed, Nov 13
9:59 pm - 8:08 amSJC-ONT
10h 09m1 stop
12:52 pm - 5:00 pmONT-SJC
4h 08m1 stop
$214Frontier
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Sat, Nov 2 - Mon, Nov 4
9:59 pm - 8:33 amSJC-ONT
10h 34m1 stop
10:50 pm - 4:54 pmONT-SJC
18h 04m1 stop
$216Frontier
Find Deal
Mon, Nov 4 - Thu, Nov 14
5:15 pm - 6:30 pmSJC-ONT
1h 15mnonstop
5:45 am - 7:00 amONT-SJC
1h 15mnonstop
$420Southwest
Find Deal
Mon, Nov 4 - Thu, Nov 7
3:55 pm - 7:40 pmSJC-ONT
3h 45m1 stop
6:15 am - 10:40 amONT-SJC
4h 25m1 stop
$430Southwest
Find Deal
Mon, Nov 4 - Thu, Nov 7
6:15 am - 5:35 pmSJC-ONT
11h 20m1 stop
7:00 am - 6:22 pmONT-SJC
11h 22m1 stop
$708Alaska Airlines
Find Deal
Fri, Nov 1 - Wed, Nov 6
12:22 pm - 8:03 pmSJC-ONT
7h 41m1 stop
7:59 pm - 12:16 pmONT-SJC
16h 17m1 stop
$718Alaska Airlines
Find Deal
Tue, Nov 5 - Fri, Nov 8
8:30 am - 8:44 pmSJC-ONT
12h 14m1 stop
10:35 am - 10:45 pmONT-SJC
12h 10m2 stops
$929United Airlines
Find Deal
Mon, Nov 4 - Thu, Nov 14
8:30 am - 10:23 pmSJC-ONT
13h 53m2 stops
10:35 am - 10:45 pmONT-SJC
12h 10m2 stops
$934United Airlines
Find Deal
Mon, Nov 4 - Thu, Nov 14
12:49 pm - 6:25 pmSJC-ONT
5h 36m1 stop
6:32 am - 6:14 pmONT-SJC
11h 42m2 stops
$1,572American Airlines
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Fri, Nov 1 - Mon, Nov 4
6:15 am - 4:18 pmSJC-ONT
10h 03m2 stops
6:32 am - 6:14 pmONT-SJC
11h 42m2 stops
$2,635American Airlines
Find Deal
Fri, Nov 1 - Mon, Nov 4
6:45 am - 8:00 amSJC-ONT
1h 15mnonstop
6:15 am - 7:35 amONT-SJC
1h 20mnonstop
$198Southwest
Find Deal
Sat, Dec 7 - Wed, Dec 11
7:15 am - 8:30 amSJC-ONT
1h 15mnonstop
6:15 am - 7:35 amONT-SJC
1h 20mnonstop
$229Southwest
Find Deal
Mon, Nov 25 - Fri, Nov 29
7:15 am - 8:30 amSJC-ONT
1h 15mnonstop
5:50 am - 7:05 amONT-SJC
1h 15mnonstop
$239Southwest
Find Deal
Fri, Nov 22 - Tue, Nov 26
7:30 am - 8:45 amSJC-ONT
1h 15mnonstop
5:50 am - 7:05 amONT-SJC
1h 15mnonstop
$280Southwest
Find Deal
Sun, Dec 22 - Thu, Dec 26
7:15 am - 8:30 amSJC-ONT
1h 15mnonstop
7:35 pm - 8:50 pmONT-SJC
1h 15mnonstop
$290Southwest
Find Deal
Sun, Nov 17 - Tue, Nov 19
7:15 am - 8:30 amSJC-ONT
1h 15mnonstop
4:10 pm - 5:25 pmONT-SJC
1h 15mnonstop
$315Southwest
Find Deal
Thu, Nov 14 - Sat, Nov 16
8:00 am - 9:15 amSJC-ONT
1h 15mnonstop
1:15 pm - 2:35 pmONT-SJC
1h 20mnonstop
$335Southwest
Find Deal
Tue, Nov 19 - Tue, Nov 19
7:30 am - 8:45 amSJC-ONT
1h 15mnonstop
7:20 am - 8:35 amONT-SJC
1h 15mnonstop
$389Southwest
Find Deal
Tue, Nov 26 - Sun, Dec 1
11:50 am - 1:10 pmSJC-ONT
1h 20mnonstop
7:20 am - 8:35 amONT-SJC
1h 15mnonstop
$395Southwest
Find Deal
Tue, Nov 26 - Sun, Dec 1
7:00 pm - 8:15 pmSJC-ONT
1h 15mnonstop
7:45 pm - 9:00 pmONT-SJC
1h 15mnonstop
$420Southwest
Find Deal
Wed, Nov 27 - Sat, Nov 30

Flights from San Jose to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from San Jose to Ontario 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 San Jose to Ontario?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Jose to Ontario, 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 San Jose to Ontario is May, where tickets cost $68 on average. On the other hand, the most expensive months are December and November, where the average cost of tickets is $309 and $252 respectively.

Good to know

Low season

May

High season

November

Cheapest flight

$50
Best time to beat the crowds with an average 61% drop in price.
Most popular time to fly with an average 44% increase in price.
Flight from San Jose to Ontario

When to book flights from San Jose to Ontario

Are your dates flexible? Find out the best times to travel from San Jose to Ontario 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 San Jose to Ontario

  • Are there car rentals at Ontario International Airport?

    Numerous car hire companies operate their desks at ONT, enabling you to leap into the adventure of the city as soon as you land in Ontario. Among the popular service providers are Hertz and Avis. The counters are located past the baggage claim. Go downstairs to the street level, just before the terminal exit. A courtesy shuttle will ferry you to the pick up area.

  • Are there accessible services at Ontario International Airport?

    Passengers with reduced mobility have no cause to worry as ONT caters to the needs of persons arriving from San Jose. The amenities at this facility are wheelchair accessible, including restrooms, bathrooms and elevators. Also, you’ll meet friendly agents ready to guide you.

  • Which is the best way to get to downtown from Ontario International Airport (ONT)?

    Taxis offer the quickest means of commuting from ONT to the city center of Ontario, covering the 2.4-mile distance in less than 10min. However, those traveling on a budget and are keen to save a few coins should consider taking a Metro bus and will get there in about 12 minutes.

  • Does SJC have nursing rooms?

    Families passing through SJC with their little ones shouldn’t worry as the establishment features nursing and lactation rooms at the disposal of breastfeeding and breast-pumping moms. These amenities are located close to gates 17, 21, 24, and 26, and are equipped with comfortable seats, baby changing tables, and sinks.

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

    In the last 3 days, the lowest price for a flight from San Jose to Ontario was $50 for a one-way ticket and $100 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Jose to Ontario are Southwest and Alaska Airlines. With an average price for the route of $251 and an overall rating of 8.1, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $316 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from San Jose 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 Jose to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from San Jose 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 Jose 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 Jose with another airline. Booking your flights between San Jose and ONT 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 San Jose 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 Jose 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 San Jose to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $153 or less one-way and $227 or less round-trip.
  • Several transportation options connect the city center of San Jose to San Jose International Airport (SJC), including buses and trams. 3.9 miles. Bus line 22 completes this 3.9-mile journey in approximately 32 minutes. Still, if you want to get there quickly, consider taking a taxi which takes about 8 minutes to link the two destinations.
  • Travelers flying aboard Southwest Airlines from San Jose to Ontario should keep in mind that the carrier runs its hub at San Jose International Airport (SJC). The airline uses Terminal B, and you can enjoy the various paid access lounges at this facility. For instance, The Club SJC is conveniently situated between Terminals A and B, and you’ll enjoy priority clearance at the security desk.
  • There are two operational terminals at San Jose International Airport (SJC); Terminal A and Terminal B. Departing travelers, both domestic and international use Terminals A, whereas all international arrivals use Terminal B. Inter-terminal movement is facilitated by the walkways leading through the hallway. Furthermore, a regular courtesy shuttle runs between the terminals at a 7-10-minute interval.
  • The multi-level parking garages at San Jose International Airport make it easy for you to leave your car behind before flying to Ontario. The available options include self-parking, covered, long-term, and valet, and you can be sure to get a convenient space to drop off your vehicle. Suppose you want an Economy parking lot, head to the north of Terminal A.
  • American Airlines is one of the carriers that allow you to enter the cabin with your furry friends when flying from San Jose to Ontario. Typically, the permitted pets include household animals like cats and dogs. Still, the pets must bear their valid medical certificates, the owners must restrain them in their cages throughout the voyage.
See more tips

Prefer to fly non-stop from San Jose to Ontario?

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

Nonstop departures

San Jose to Ontario

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Ontario to San Jose

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from San Jose to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Jose to Ontario. 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 San Jose 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
SouthwestOverall score based on 5116 reviews
8.1Comfort
8.7Crew
7.7Entertainment
8.3Boarding
7.2Food
Airline reviews

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

8.0 ExcellentMark, Oct 2024LAX - SFO
Read more Southwest reviews

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

Forget beverage, they didn't even have water for half the passangers?

Can not wait for seating change to reduce the amount of pre boards - it’s disheartening the abuse. And then then deplaning

I boarded last because of my boarding assignment and was given a middle seat at the back of the plane. I’m 6”1” so it was really tight. I wish I just had a seat assignment instead of a general boarding group. My bag was way at the front and my seat at the back. Was never offered a beverage and had no room to move.

Flight was not full! Had a whole row to myself.

The flight was delayed for almost an hour. We sat on the tarmac. There was no announcement. Not by the pilot or the crew. And for some reason, there was no beverage service, so even though it was a short flight, we had sat on the tarmac and the extra hour delay made me understandably thirsty. Water would’ve been nice if they had offered it. And for the first time, I forgot to bring my own water bottle. Reminder to bring your own water bottle because you never know if you’re going to get a beverage.

It was a new plane with larger overhead bins & charging ports at the seats.

Wifi didn’t work, no service, seats are hard as rocks

The first flight attendant who served refreshments was not pleasant at all. No eye contact, no smile, I used my “please “ and “thank you “ and all but had pretzels thrown at me. Next one far surpassed pleasantries and more like Alaska Air! Good leg room, comfortable seats. Boarding was without flaws. I didn’t order food….

All was good. Flight from STS to Burbank was on a new plane; flight back was on a plane that was showing its age.

Quick, efficient, incredibly kind staff. It was a short flight (50 min)but still received beverage service. Treated my 5 year old like a star. Just endlessly appreciative.

My main complaint is specifically with having booked through kayak. Our flight was delayed and I was no longer able to access my boarding pass through the kayak app. Fortunately I had screen capped it. If I had not it would have been critical problem while boarding.

Display what groups are boarding on the monitor...was unclear unless you listened closely and continuously.

Im not sure what could have been better. flight was quick and efficient, everyone was kind and made the experience far better than other flights I have made. This is specific to the Santa Rosa Airport crew.

the departure time was changed several times. At the end we were late 2 hours and 15 min. It was a poor experience

Second flight was in conflict with first flight arrival. I missed second flight. The new flight to my final destination arrive too late to pickup my rental car. I had extra expenses staying a one night in a hotel and taxis.

It was Okay. I do appreciate the flight being on time and the happy crew.

I can't say yet as I'm still waiting for my luggage. I thought I had given my TSA # before my first flight but it wasn't on my boarding pass so my initial flying to my destination I wasn't able to utilize the device. I called Alaska Airlines and had it added to my profile. It still wasn't on my boarding pass so I had to go to an agent and have it added which took extra time as there was a line of people waiting to be helped.

RE Food: Wish there was a choice for No Rating. Flew from Honolulu to Los Angeles on a Red-Eye flight (11:00 pm to 7:30 am). Other than a package of cookies with a beverage choice offered soon after take-off, and a beverage choice shortly before landing, no other food choices were offered. Everyone slept or rested for most of the trip. Nothing to rate. RE Entertainment: Everyone was sleeping most of the flight. Only saw one passenger watch about 30 minutes of entertainment on his iPad. I never attempted to access any entertainment options.

Baby cried a lot. Nothing anyone could do about it. Just part of flying.

For coast to coast travel the A321 and even the NEO, even in first class will never be excellent. That would take a B787 or 777 to accomplish.

The flight crew was fantastic! Which the seats had a small TV.

The foot ottoman cushion was missing on my business class seat.. the hydraulics is on its last leg & seat cushions do not have support or paddling. Heavily dented by butts

also wi-fi never worked attendant said satellite coverage is spotty over water ..... but we were over land!

I was unhappy with having the seat I chose changed at the last minute. I was moved to an aisle seat which did not recline and was next to the bathroom. The bathroom odors made the flight entirely unpleasant. Having carefully chosen my seat months before I was not pleased with my AA experience. In addition, they ran out of tea during flight service, really?

Dallas Hub. American taking ownership for their screwups instead of blaming their contractors and customers, trading their people, their call in service, reservation agents and their ticketing process. Make sure wheelchairs are available especially when the request is in their record.

The aircraft was on-time and plane and lavatory was clean.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

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

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

Everything that was available was excellent. Spacious and comfortable, with lovely and helpful crew (one was having a bit of a sour day, but that happens). We sat on the tarmac for one hour and seven minutes waiting for our gate to clear in SAN, but the pilot kept us informed and, amazingly, was very professional in not ragging on the airport (whose fault it was).

Flight was delayed 8 hours so far. Don’t expect to fly when choosing Spirit Airlines. I will happily pay more to never deal with this company again.

This airline is effective for the price you pay, do not expect anything extra at all. You have to pay extra for seat assignment , carry on luggage, food, you name it ...and even if you pay extra for better seats they do not recline.

Got on quickly and easily. When it turned out the other two seats in my row would be occupied, a nearby flight attendant immediately let me know that I could move one row behind me since it was an empty row, I moved into the window seat where I could relax enough to take a little nap. Can’t ask for much more.

Boarding of flights and the notifications of delays must be managed properly with checked

Awful. My flight was three hours late leaving DFW and we just arrived at LAX three hours late and stuck on the runway. I heard the Spirit workers at the desk in DFW say that we were waiting on a crew. I am extremely disappointed in Spirit.

Canceled my first flight for no discernible reason and couldn't rebook me on to a new flight until the next day. They did not compensate me for the delay in any way.

At LAS airport, bag drop process was hard, you need to pay for a faster drop. There was a long line for a free drop and you need to do it by yourself. No one helped you. Bad experience at LAS airport.

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

There was no easy way to check in. I don't want to install an app to checkin. I will use alaska from now on because they have a web check in method that is easy.

Horrible! The short distance flight ended up taking 5 hrs! There was a 3 hr delay for the flight to take off and there was a 70 min wait on the tarmac for some bogus reason that the pilot said the gate he was supposed to board was taken up. After a 30 min wait he said the plane that was supposed to push out of the gate called a medical emergency and 40 min later he ended up boarding another gate. For the initial 3 hr delay there was no information/alert about the gate or delay in the app or the boards up until the boarding time and even beyond! Had to walk all the way to the end of the terminal to find the frontier staff to ask what was going on. Avoid this airline at all costs! If you have carryon bags or checked bags , their prices come equivalent to the prices of more reliable airlines. They are the worst in timeliness at 60% (reported as delayed) this year (check the data) by a high margin even compared to the second worst airline. If you are ok with having a miserable flight experience with the odds close to flip of a coin, feel free to try them. If you value your time , money and flying experience, stay away.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

I went to the Frontier counter in San Jose at 1030am or so on Sunday 10/13/24 to see if I could get an earlier flight to San Diego in lieu of my reserved 630pm flight. One thing led to another, and I was able to obtain an open seat for about $ 56. on the earlier flight. Fine. Then the agent asked if I "was checking a bag". Not knowing that carry-ons cost extra per Frontier policy, I thought that she meant a regular checked bag. Therefore, I said no. Once I got to the gate, the same gate agent who sold me a ticket told me that I had to pay $99 for a carry-on, and that all bags were extra on Frontier. Having never flown on Frontier, I was not aware of this. Part of the issue was that she was not a native English speaker, so there was a miscommunication as to what "bag" meant. I would have preferred for her to have clearly let me know at the front counter that any bag including a carry-on cost $99. It would have had the same outcome, as I had to take my carry-on. But it got hectic at the last minute at the gate itself. The baggage policy should have mentioned "including carry-ons" when we first spoke.

Most horrible airlines. Please avoid it. It's ok to spend $50 extra for delta, united or Alaska

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Staff members pretty horrible when boarding. No care for customers

The trip was good but the last minute changes I didn’t like because I had already talked to the attendee and they didn’t help me with my ticket I was having trouble checking in and when the time was up they help me but charge me for that and last minute luggage it was a small bag. After I was in the airplane I realized you were charging because the flight was almost empty and you have to get the money some how. Thanks for everything.

Book cheap flights from San Jose to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Jose to Ontario found on KAYAK in the last 72 hours.
12/9Mon
1 stopFrontier
7h 13mSJC-ONT
$50
11/28Thu
1 stopFrontier
10h 23mSJC-ONT
$56
11/14Thu
1 stopFrontier
9h 09mSJC-ONT
$58
12/6Fri
nonstopSouthwest
1h 15mSJC-ONT
$99
12/10Tue
1 stopAlaska Airlines
6h 43mSJC-ONT
$101
12/18Wed
1 stopDelta
6h 24mSJC-ONT
$102
12/14Sat
1 stopAlaska Airlines
13h 42mSJC-ONT
$107
12/18Wed
1 stopSouthwest
4h 15mSJC-ONT
$108
12/24Tue
1 stopAmerican Airlines
4h 41mSJC-ONT
$139
11/13Wed
1 stopAmerican Airlines
6h 03mSJC-ONT
$169

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Last minute flights from San Jose to Ontario

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 San Jose to Ontario that are departing in the next 10 days.
11/2Sat
multi-stopFrontier
10h 09mSJC-ONT
11/4Mon
multi-stopFrontier
4h 08mONT-SJC
$214
11/4Mon
multi-stopFrontier
10h 34mSJC-ONT
11/14Thu
multi-stopFrontier
18h 04mONT-SJC
$216
11/4Mon
nonstopSouthwest
1h 15mSJC-ONT
11/7Thu
nonstopSouthwest
1h 15mONT-SJC
$420
11/4Mon
multi-stopSouthwest
3h 45mSJC-ONT
11/7Thu
multi-stopSouthwest
4h 25mONT-SJC
$430
11/1Fri
multi-stopAlaska Airlines
11h 20mSJC-ONT
11/6Wed
multi-stopAlaska Airlines
11h 22mONT-SJC
$708
11/5Tue
multi-stopAlaska Airlines
7h 41mSJC-ONT
11/8Fri
multi-stopAlaska Airlines
16h 17mONT-SJC
$718
11/4Mon
multi-stopUnited Airlines
12h 14mSJC-ONT
11/14Thu
multi-stopUnited Airlines
12h 10mONT-SJC
$929
11/4Mon
multi-stopUnited Airlines
13h 53mSJC-ONT
11/14Thu
multi-stopUnited Airlines
12h 10mONT-SJC
$934
11/1Fri
multi-stopAmerican Airlines
5h 36mSJC-ONT
11/4Mon
multi-stopAmerican Airlines
11h 42mONT-SJC
$1,572
11/1Fri
multi-stopAmerican Airlines
10h 03mSJC-ONT
11/4Mon
multi-stopAmerican Airlines
11h 42mONT-SJC
$2,635

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

Information on your arrival and departure airports