Cheap Flights from Ontario to Philadelphia starting at RM 197

We've found these cheap flights for you. You can book one-way or return flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Ontario to Philadelphia

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

23 30
Apr

30 6
6 13
13 20
20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

When are flight tickets from Ontario (ONT) to Philadelphia (PHL) the cheapest?

Airlines adjust prices for flights from Ontario to Philadelphia based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Ontario (ONT) to Philadelphia (PHL) cost?

According to Trip.com's data, the lowest price is around RM 1,483.
What's the most popular airline for non-stop flights from Ontario (ONT) to Philadelphia (PHL)?

Spirit Airlines operates 2 direct flights from Ontario (ONT) to Philadelphia (PHL).
How many airports in Philadelphia (PHL)?

There are 2 airport(s) in Philadelphia (PHL): Philadelphia International Airport and Trenton Mercer Airport.

How to find a cheap flight from Ontario to Philadelphia

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Philadelphia. Book your flights at the right time and save more.

Be flexible with your travel dates to get the cheapest flight from Ontario to Philadelphia.

Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from Ontario to Philadelphia over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Sat, May 10, with one-way flights priced at just RM 870.

Compare cheap flight deals from Ontario to Philadelphia across hundreds of airlines.

With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from Ontario to Philadelphia. The cheapest airline for this route is United Airlines.

Set up a Price Alert

By setting up a Price Alert for your journey from Ontario to Philadelphia, you can easily keep an eye on ticket prices without having to check every day.

Don't miss out on cheap flight deals and promo codes from Ontario to Philadelphia.

You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.

Book early or wait until the last minute.

It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.

Search for flights on the go.

For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from Ontario to Philadelphia and snag some exclusive deals just for you.

Flight Information from Ontario to Philadelphia

Cheapest direct flight price	RM 197
Cheapest return ticket price	RM 711
Off-season for travel	April
Peak season for travel	April
Flight distance	8,753.39km
Popular airline	Frontier Airlines