Cheap flights from Ontario to Philadelphia from $138

Travelers frequently search for route combinations, such as Ontario and Guadalajara, Dallas, Seattle, Las Vegas, San Francisco, Mexico City, Houston, Denver, Honolulu, Sacramento, Chicago, Portland, Washington, D.C., New York, Toronto, Orlando, Veracruz, Cancún, Atlanta, London.

Travelers frequently search for route combinations, such as Philadelphia and Atlanta, Orlando, Fort Lauderdale, Mexico City, Dallas, Chicago, Tampa, Miami, Los Angeles, Nashville, Detroit, Charlotte, Boston, Santo Domingo, Denver, Houston, Las Vegas, San Juan, Monterrey, Guadalajara.

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Hollywood Burbank, Palm Springs International, Long Beach, McClellan–Palomar, 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, Long Island MacArthur, Westchester County, Tweed New Haven.

Currently, you can fly between Ontario and Philadelphia with Frontier Airlines, United Airlines, JetBlue Airways, Alaska Airlines, Avianca.

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.

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

There are a number of airports in and around Philadelphia. The main one is Philadelphia International and other nearby airports include Newark Liberty International, Washington Dulles International, Baltimore–Washington International, LaGuardia, New York Stewart International Airport, Ronald Reagan Washington National, Atlantic City International, Long Island MacArthur, Westchester County, Tweed New Haven.