Cheap flights from San Diego, CA to Ontario, CA

Travelers frequently search for route combinations, such as San Diego and London, Edmonton, Las Vegas, Cincinnati, Manchester, Phoenix, New York, Houston, Denver, San Francisco, Austin, Minneapolis, Los Angeles, New Orleans, Amsterdam, Madrid, Raleigh, Nashville, Detroit, Atlanta.

Travelers frequently search for route combinations, such as Ontario and London, New York, Bangkok, San Francisco, Denver, Sacramento, Taipei, Manila, Toronto, Calgary, Seattle, Las Vegas, San Jose, Orlando, Houston, Macau, Los Angeles, Washington, D.C., Manchester, Detroit.

San Diego is mainly served by San Diego International. But there are other airports nearby, including Marine Corps Air Station Miramar, McClellan–Palomar.

The main airport in San Diego is San Diego International. It is also served by Tijuana International, Ontario International, John Wayne, Mexicali International, Palm Springs International, Hollywood Burbank, Long Beach, Imperial County, Yuma International, Hawthorne Municipal.

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Long Beach, Santa Barbara Municipal, Imperial County, Meadows Field.

Yes, it's possible to combine different modes of transport between San Diego and Ontario thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between San Diego and Ontario can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between San Diego and Ontario with Frontier Airlines, Alaska Airlines, Spirit Airlines, United Airlines, JetBlue Airways.

If you don’t have specific dates for your trip between San Diego and Ontario, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.