$86 Cheap Frontier Airlines flights Denver (DEN) to Phoenix (PHX)

Set the “Price (lowest to highest)” filter on Expedia to look for cheap Frontier Airlines return flights from $133 from DEN to PHX. Affordable one-way options from $86 are also available.**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.

July is one of the most affordable months to jet off to Phoenix with Frontier Airlines. You could also find great prices on one-way and round-trip fares in August.

Start searching one to three months before your departure to find cheap fares on Frontier Airlines flights from Denver Intl. Airport (DEN) to Sky Harbor Intl. Airport (PHX). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic flights.*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.

Easily travel from Denver Intl. Airport (DEN) to Sky Harbor Intl. Airport (PHX) on one of Frontier Airlines’s 30 weekly direct flights. Use Expedia’s “Nonstop” and “Airline” filters to find the Frontier Airlines flight that’ll land at PHX at your preferred time.

Leave Denver Intl. Airport (DEN) for Sky Harbor Intl. Airport (PHX) on a direct Frontier Airlines flight, and you’ll be in the skies for approximately 2h 11m.

Frontier Airlines operates the most flights from Denver Intl. Airport (DEN) to Sky Harbor Intl. Airport (PHX) on Thursday. With up to 5 daily departures, you’ll get the most choice and flexibility on this day.

The earliest Frontier Airlines flight from DEN to PHX departs at 5:45AM UTC-7, landing at 7:54AM UTC-7. If you want to jet off later, the last Frontier Airlines flight leaves DEN at 10:18PM UTC-7 and lands at PHX at 12:26AM UTC-7. Flying before noon is generally a wise choice as morning flights are 20% less likely to be canceled.**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.

Take a Frontier Airlines flight from Denver Intl. Airport (DEN) to Phoenix, and you’ll probably arrive at Sky Harbor Intl. Airport (PHX). This is the airline’s primary hub here.

A rewarding loyalty program and the chance to rack up points through Frontier Miles are the start of the reasons to depart from DEN to PHX with Frontier Airlines. Plus, when you join Expedia’s free One Key™ program, you can earn OneKeyCash™* in addition to any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Frontier Airlines typically flies Airbus A321neo planes for flights from Denver Intl. Airport (DEN) to Sky Harbor Intl. Airport (PHX). This carrier also operates the Airbus A320neo on this route. Keep in mind that aircraft type can vary due to operational reasons, so the plane you board could be different on your travel date.

Changes are often free within 24 hours of making a booking, but your airline may charge a fee after that. For more details about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your itinerary without additional charges, check the “Changes included” and “No cancel fee” filters when organizing your next break.