Cheap flights from Ontario, CA to Philadelphia, PA

Travelers frequently search for route combinations, such as Ontario and Denver, Orlando, Austin, Las Vegas, Atlanta, Sacramento, San Francisco, Seattle, San Antonio, Guadalajara, Charlotte, New Orleans, Fort Lauderdale, Washington, D.C., Oakland, San Jose, Detroit, Minneapolis, Chicago, Houston.

Travelers frequently search for route combinations, such as Philadelphia and Orlando, Atlanta, Denver, Las Vegas, Tampa, San Juan, Miami, Dallas, Charlotte, Los Angeles, New Orleans, Austin, San Diego, Fort Myers, Houston, Phoenix, Nashville, Jacksonville, San Francisco, London.

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, Santa Barbara Municipal, Imperial County.

The main airport in Philadelphia is Philadelphia International. It is also served by Newark Liberty International, Washington Dulles International, Baltimore–Washington International, LaGuardia, New York Stewart International Airport, Ronald Reagan Washington National, Atlantic City International, Lehigh Valley International, Wilkes-Barre/Scranton International, Long Island MacArthur.

Yes, it's possible to combine different modes of transport between Ontario and Philadelphia thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Ontario and Philadelphia 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 Ontario and Philadelphia with Frontier Airlines, Spirit Airlines, JetBlue Airways, United Airlines, Alaska Airlines.

If you don’t have specific dates for your trip between Ontario and Philadelphia, 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 Ontario and Philadelphia, 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.