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$50+ Cheap flights from San Jose to Ontario (SJC - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ONT
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
1 adult, Economy
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Cheap flight deals from San Jose to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$100
(Frontier)

One-way from

$50
(Frontier)

Popular in

December

Cheapest in

May

Average price

$290
Provider with most accurate pricing for San Jose-Ontario flight deals.
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Provider most trusted by Cheapflights users for San Jose-Ontario flights.
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From San Jose to Ontario
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One-way flight from San Jose to Ontario
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High demand for flights, 33% potential price rise
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Best time to find cheap flights, 5% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from San Jose to Ontario

Cheapest flights from San Jose to Ontario
Explore the most affordable flight options available from San Jose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2024.

This Gotogate deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:26 pmSJC - ONT
1 stop11h 43mFrontier
Mon 12/3012:59 amONT - SJC
1 stop9h 21mFrontier
Deal found 12/22$207
This eDestinos deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/237:26 pmSJC - ONT
1 stop11h 43mMultiple Airlines
Thu 12/2610:31 pmONT - SJC
1 stop9h 15mMultiple Airlines
Deal found 12/22$471
This Southwest deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/253:55 pmSJC - ONT
1 stop5h 30mSouthwest
Fri 12/273:45 pmONT - SJC
1 stop4h 20mSouthwest
Deal found 12/22$518
This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/269:53 amSJC - ONT
1 stop5h 32mAmerican Airlines
Sat 12/286:10 amONT - SJC
1 stop6h 05mAmerican Airlines
Deal found 12/22$520
This Alaska Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2312:49 pmSJC - ONT
1 stop11h 10mAlaska Airlines
Tue 1/76:00 amONT - SJC
1 stop8h 17mAlaska Airlines
Deal found 12/22$737
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/246:15 amSJC - ONT
2 stops16h 22mDelta
Sat 12/286:07 pmONT - SJC
1 stop17h 01mDelta
Deal found 12/22$1,035

Find flights from San Jose to Ontario within your budget

Customize your flight search to find flights from San Jose to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San JoseOntario

SJC - ONT

SJCONT

San Jose

Thu 1/9

1:11 pm-11:44 pm

1 stop10h 33m

Ontario

Sat 1/11

8:04 am-4:23 pm

1 stop8h 19m

$100

San JoseOntario

SJC - ONT

SJCONT

San Jose

Wed 1/29

1:10 pm-8:13 pm

1 stop7h 03m

Ontario

Sat 2/1

8:04 am-4:21 pm

1 stop8h 17m

$193

San JoseOntario

SJC - ONT

SJCONT

San Jose

Mon 1/6

5:15 pm-6:30 pm

Nonstop1h 15m

Ontario

Wed 1/8

8:30 am-9:50 am

Nonstop1h 20m

$213

San JoseOntario

SJC - ONT

SJCONT

San Jose

Wed 2/5

1:10 pm-8:13 pm

1 stop7h 03m

Ontario

Wed 2/12

6:00 am-12:15 pm

1 stop6h 15m

$258

San JoseOntario

SJC - ONT

SJCONT

San Jose

Tue 1/21

8:25 am-8:51 pm

1 stop12h 26m

Ontario

Tue 1/28

5:10 am-6:00 pm

1 stop12h 50m

$443

San JoseOntario

SJC - ONT

SJCONT

San Jose

Mon 3/10

4:03 pm-12:09 am

1 stop8h 06m

$50

San JoseOntario

SJC - ONT

SJCONT

San Jose

Tue 1/28

8:55 am-10:10 am

Nonstop1h 15m

$99

San JoseOntario

SJC - ONT

SJCONT

San Jose

Wed 1/29

1:10 pm-8:13 pm

1 stop7h 03m

$129

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sat 2/22

8:30 am-8:52 pm

1 stop12h 22m

$237

San JoseOntario

SJC - ONT

SJCONT

San Jose

Sun 3/23

6:25 am-11:45 pm

2 stops17h 20m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Compare providers for flights from San Jose to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Jose to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Jose-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Jose-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Jose-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Jose-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Jose-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Jose to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Jose with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Jose to Ontario

Get recent, data-driven insights about flights from San Jose to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from San Jose to Ontario?

Currently, August is the cheapest month in which you can book a flight from San Jose to Ontario (average of $246). Flying from San Jose to Ontario in March is currently the most expensive (average of $317). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJC to ONT?

Find hourly flight availability from San Jose to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2024.

It’s optimal to fly from San Jose to Ontario in the afternoon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from San Jose to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Jose to Ontario flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated December 23, 2024.
Read through reviews of airlines operating flights from San Jose to Ontario, such as Frontier, Alaska Airlines and Southwest. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,780 reviews
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,549 reviews
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,588 reviews
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,020 reviews
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Frontier
6.1
Okay
3,469 reviews
Southwest
8.1
Very good
4,780 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from San Jose to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Jose to Ontario?

    To fly from San Jose to Ontario, you need to book a flight from San Jose (SJC) to Ontario (ONT). Nonstop flights to Ontario from San Jose take 1h 15m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from San Jose to Ontario offered by 4 different airlines.

  • How popular is this San Jose to Ontario flight route?

    Within the past month, 1 users have taken a look at flights from San Jose to Ontario.

  • What are the cheapest airlines flying from San Jose to Ontario round-trip?

    According to our current data, Frontier ($100), Southwest ($213), and Alaska Airlines ($258) offers the cheapest pricing from San Jose to Ontario. Frontier is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Jose to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $50. However, be on the lookout for offers from Southwest and Alaska Airlines, as they are both options that can get you from San Jose to Ontario for a low price.

  • What are the cheapest flights from San Jose to Ontario?

    Looking at all options, your cheapest flight can be booked for $115. While the most popular route (San Jose - Ontario) can be booked for $108 on average our data indicates $272 when flying from San Jose to Ontario.

  • Can I find deals for flights from San Jose to Ontario that include hotel bookings?

    Yes. In addition to deals on San Jose to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Ontario.

  • Can I find deals for business class flights from San Jose to Ontario?

    Yes. Cheapflights offers flight deals from San Jose to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from San Jose to Ontario (average of $246). Flying from San Jose to Ontario in March is currently the most expensive (average of $317). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 4 airlines flying from San Jose to Ontario

Discover the top 4 airlines that operate flights from San Jose to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$37Average$89FlexibilityNo cancel feeOn-time65%
FrontierCheapest$38Average$100FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$138Average$276FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$191Average$279FlexibilityNo cancel feeOn-time63%
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