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Cheap Flights from Ontario International to San Jose

Compare Ontario International to San Jose flight deals

Find the cheapest month or even day of the year to fly to San Jose

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Flight deals from Ontario International to San Jose

Looking for a cheap last-minute deal or the best return flight from Ontario International to San Jose? Find the lowest prices on one-way and return tickets right here.
San Jose.£78 per passenger.Departing Fri, 13 Dec, returning Sun, 15 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Fri, 13 Dec, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Sun, 15 Dec, arriving in Ontario International.Price includes taxes and charges.From £78, select.
San Jose.£79 per passenger.Departing Mon, 4 Nov, returning Mon, 11 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 4 Nov, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Mon, 11 Nov, arriving in Ontario International.Price includes taxes and charges.From £79, select.
San Jose.£92 per passenger.Departing Thu, 9 Jan, returning Sun, 12 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 9 Jan, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Sun, 12 Jan, arriving in Ontario International.Price includes taxes and charges.From £92, select.
San Jose.£100 per passenger.Departing Thu, 6 Feb, returning Sat, 8 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 6 Feb, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Sat, 8 Feb, arriving in Ontario International.Price includes taxes and charges.From £100, select.
San Jose.£121 per passenger.Departing Mon, 30 Dec, returning Wed, 1 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 30 Dec, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Wed, 1 Jan, arriving in Ontario International.Price includes taxes and charges.From £121, select.
San Jose.£153 per passenger.Departing Tue, 26 Nov, returning Sun, 1 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 26 Nov, arriving in San Jose International.Inbound indirect flight with Frontier Airlines, departs from San Jose International on Sun, 1 Dec, arriving in Ontario International.Price includes taxes and charges.From £153, select.
San Jose.£154 per passenger.Departing Wed, 4 Dec, returning Wed, 11 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Wed, 4 Dec, arriving in San Jose International.Inbound direct flight with Southwest Airlines departs from San Jose International on Wed, 11 Dec, arriving in Ontario International.Price includes taxes and charges.From £154, select.
San Jose.£154 per passenger.Departing Tue, 19 Nov, returning Wed, 20 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Ontario International on Tue, 19 Nov, arriving in San Jose International.Inbound direct flight with Southwest Airlines departs from San Jose International on Wed, 20 Nov, arriving in Ontario International.Price includes taxes and charges.From £154, select.

Find the cheapest month to fly from Ontario International to San Jose

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to San Jose flights are currently cheapest in December.
Oct
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Nov
from £79
Dec
from £78
Jan
from £92
Feb
from £100
Mar
from £201
Apr
from £198
May
from £200
Jun
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Jul
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Aug
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Sep
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Direct flights from Ontario International to San Jose

Alternative Ontario International to San Jose routes

Looking for the cheapest, fastest or easiest route from Ontario International to San Jose? You could fly into the following airports instead.

Ontario to San Jose: Flight information

The things to know before you go.
Cheapest flight found£78
Cheapest month to flyDecember
Average flight time1 hr, 16 mins
Most popular airlineSouthwest Airlines
Average flights per week33

Finding cheap flights from Ontario International to San Jose: Frequently asked questions

There are 7 airports in San Jose: San Jose International, San Jose Reid-Hillview, Oakland Metropolitan Oak, San Francisco International, Concord, Carmel Monterey Peninsula, and Sacramento Stockton.
The best price we found for a return flight from Ontario International to San Jose is £78. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 16 minutes is the average flight time from Ontario International to San Jose.
Southwest Airlines flies direct from Ontario International to San Jose.
As of October 2024, there are 33 flights per week flying from Ontario International to San Jose.
The cheapest month to fly from Ontario International to San Jose is usually October 2024.
If you're flying from Ontario International Airport, the cheapest airport near San Jose is San Jose International – which is 2.9 miles away from the centre of San Jose. We've found flights into this airport from £78.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to San Jose on Friday, 13 December 2024.
Yes – the average flight time is 1 hour and 16 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Jose but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Jose is around 40 days in advance, so don’t leave your flight to the last minute.
In October, the average temperature is usually around 17°C. August is typically the warmest month in San Jose, when it usually averages around 28°C. You can expect the least rain in July. The coldest month is January, with temperatures averaging 5°C. The rainiest month is February.
Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to San Jose.

How to find cheap flights to San Jose from Ontario International

Looking for cheap tickets from Ontario International to San Jose? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Ontario International to San Jose. And with us there are no hidden fees - what you see is what you pay.
  • Compare flight deals to San Jose from Ontario International from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
  • Flex your dates to find the best Ontario International-San Jose ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to San Jose from Ontario International.
  • Set up a Price Alert. You can easily track the fare of your cheap Ontario International-San Jose flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Ontario International and San Jose? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business class flights from Ontario International and San Jose. We scour the internet for the best Business, Premium Economy and First Class flight fares to San Jose, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Ontario International to San Jose flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

    • Combine your flight to San Jose from Ontario International with hotels and car hire

    Once you've secured your cheap flight ticket from Ontario International to San Jose, discover the best prices and exclusive rates for hotels in San Jose or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


Plan the rest of your trip from Ontario to San Jose

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.