$105 Cheap Frontier Airlines flights Portland (PDX) to Philadelphia (PHL)

You’ll discover cheap round-trip Frontier Airlines flights from $205 from PDX to PHL by sorting your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $105 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines flights to Philadelphia are typically cheaper in the off-peak months of January and February. Whether you’re searching for a round-trip or one-way ticket, you could land a better deal then.

Look for affordable Frontier Airlines flights from Portland Intl. Airport (PDX) to Philadelphia Intl. Airport (PHL) one to three months prior to your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use our “Nonstop” filter when looking for direct Frontier Airlines flights from PDX to PHL. You can also compare other airlines offering the same nonstop journey.

Search Frontier Airlines’s earliest flights from PDX to PHL by checking our “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Hop on a Frontier Airlines flight from Portland Intl. Airport (PDX) to Philadelphia, and you’ll probably come in to Philadelphia Intl. Airport (PHL). This is the airline’s primary hub in this destination.

With a rewarding loyalty program, Frontier Airlines is a popular choice for many travelers journeying from PDX to PHL. Plus, if you’re a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or reschedule your flight, although there may be additional charges if your booking was made over 24 hours ago. Need to keep your options open? Use our “Changes included” and “No cancel fee” filters to find flights that won’t charge you extra if you have to alter your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more details.