$73 Cheap Frontier Airlines flights Portland (PDX) to Phoenix (PHX)

Use the "Price (lowest to highest)" filter on Expedia to look for cheap Frontier Airlines return flights from $153 from PDX to PHX. Affordable one-way tickets from $73 are also on offer.**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.

Search for cheap Frontier Airlines flights from Portland Intl. Airport (PDX) to Sky Harbor Intl. Airport (PHX) one to three months before your departure date. 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 class and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive is typically 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.

The earliest Frontier Airlines flight from PDX to PHX takes off at 6:14PM UTC-8, touching down at 9:55PM UTC-7. If you want to set off later in the day, the last Frontier Airlines flight leaves PDX at 6:14PM UTC-8 and lands at PHX at 9:55PM UTC-7. Flying before noon is often a good option as morning and mid-morning flights tend to experience 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.

With a rewarding loyalty program, Frontier Airlines is a popular choice for many passengers departing from PDX to PHX. 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.