Cheap flights from San Diego to Ontario from $243

Travelers frequently search for route combinations, such as San Diego and Las Vegas, New York, Dallas, Portland, Salt Lake City, Denver, Calgary, Atlanta, Seattle, San Francisco, Phoenix, Chicago, Reno, Washington, D.C., San Jose, Orlando, Honolulu, Minneapolis, Boston, Houston.

Travelers frequently search for route combinations, such as Ontario and Dallas, Las Vegas, San Francisco, Denver, Portland, Guadalajara, Seattle, Phoenix, Minneapolis, Sacramento, Salt Lake City, Atlanta, Houston, Orlando, Boise, Chicago, Cleveland, San Jose, Albuquerque, Mexico City.

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

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, Hawthorne Municipal, Yuma International.

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, Meadows Field, Imperial County, Santa Barbara Municipal.

Currently, you can fly between San Diego and Ontario with United Airlines, Hawaiian Airlines, Alaska Airlines.

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.

Traveling between San Diego and Ontario, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around San Diego. The main one is San Diego International and other nearby airports include Tijuana International, Ontario International, John Wayne, Mexicali International, Palm Springs International, Hollywood Burbank, Long Beach, Imperial County, Hawthorne Municipal, Yuma International