Cheap flights from Ontario to Philadelphia

Flights starting at $182. Choose between Frontier Airlines, American Airlines, or Delta Air Lines to find the best price.

Why travel with Kiwi.com?
Best price

100+ million searches a day to find you the best available price.

Unique content

Explore unique options you won’t find anywhere else.

Travel hacks

Discover flight options and prices the airlines don’t want you to see.

Tips to know when travelling to Philadelphia

Mailbox
Receive exclusive deals by email.

By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.

Travelers usually depart from Ontario International, Ontario Bus Stop, Ontario, CA station, or Montclair (Ontario) when they travel from Ontario to Philadelphia. Book your trip to arrive at Philadelphia International, Philadelphia, PA - 30th Street, Philadelphia, PA Greyhound Terminal, Ardmore, PA station, or Philadelphia, PA - Market Street bus stop. The most popular airlines for this route are Frontier Airlines, American Airlines, Delta Air Lines, United Airlines, and Spirit Airlines. Ontario and Philadelphia have 300 direct flights per week. When you arrive at Philadelphia, consider visiting National Mall, Manhattan Island, Times Square, Staten Island, Lincoln Memorial, Empire State Building, Statue of Liberty, Metropolitan Museum of Art, and Independence National Historical Park, PA, USA.

Check-in for a flight from Ontario to Philadelphia

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
American AirlinesAALAAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

What are the most popular routes to and from Ontario?
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.
What are the most popular routes to and from Philadelphia?
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.
What airports are near Ontario?
The main airport in Ontario is Ontario International. It is also served by San Diego International, Ontario International, Tijuana International, John Wayne, Hollywood Burbank, Palm Springs International, Santa Barbara Municipal, Imperial County, Meadows Field, Long Beach.
What airports are near Philadelphia?
The main airport in Philadelphia is Philadelphia International. It is also served by John F. Kennedy International, Newark Liberty International, Baltimore–Washington International, Washington Dulles International, LaGuardia, Ronald Reagan Washington National, New York Stewart International Airport, Trenton–Mercer, Long Island MacArthur, Atlantic City International.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Ontario and Philadelphia?
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.
What is Virtual Interlining and how do I use it?
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.
Which airlines fly between Ontario and Philadelphia?
Currently, you can fly between Ontario and Philadelphia with Frontier Airlines, American Airlines, Delta Air Lines, United Airlines, Spirit Airlines.
When's the best time to travel between Ontario and Philadelphia?
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.
What flights operate between Ontario and Philadelphia?
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.
How many airports are there near Ontario?
How many airports are there near Philadelphia?
What time do nonstop (direct) flights between Ontario and Philadelphia depart?
What time do nonstop (direct) flights between Ontario and Philadelphia arrive?
What time do flights between Ontario and Philadelphia depart?
What time do flights between Ontario and Philadelphia arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

Explore alternative trips

Flights from Ontario

Flights to Philadelphia

Popular routes

Find the best connection from Ontario to Philadelphia

Search, compare, and book flights, trains, or buses to get there.

Search flights, trains & buses