and Get up to C$15 OFF
◊ Applies to bookings for 3+ travelers. Book by Oct 31, 2018.  Learn more
Best Price Guarantee

Find our lowest price to destinations worldwide, guaranteed

Easy Booking

Search, select and save - the fastest way to book your trip

24/7 Customer Care

Get award-winning service and special deals by calling 1-888-766-3163

Free Mobile App

Our deals are mobile,
just like you

Book Flights from San Jose to Ontario will help you to find the best deals on flights from San Jose to Ontario. With our search technology, effortlessly searching flight routes across hundreds of airlines has never been easier or more convenient. With, we aim to make it simple and quick to search, select and save on the flights that best suit your needs and budget.

No matter if you are traveling for business or pleasure, we offer a wide range of deals from business class discounts to last minute flight deals to destinations like Ontario. Whether you are planning ahead or looking for last minute tickets, CheapOair has the right flights at the right price. After booking your ticket, explore this page to view blog posts about this destination, learn more about hotels near ONT and read reviews from others who booked their flights with

  • When does the first flight of the day depart from SJC? 8:15AM Southwest Airlines Flight #5274
  • When does the last flight depart to ONT? 7:40PM Southwest Airlines Flight #3219
  • What is the travel distance between San Jose and Ontario?2,021 miles
  • Which is the busiest day in terms of passengers flying from SJC to ONT?Sunday
  • Which is the nearest airport to Ontario, California?Ogoki Post Airport
  • Which is the nearest airport to San Jose, California?San Jose International Airport