$69 Cheap Frontier Airlines flights Austin (AUS) to Phoenix (PHX)

Grab budget-friendly return Frontier Airlines flights from $119 from AUS to PHX by filtering your results from “Price (lowest to highest)” on Expedia. Or search for bargains from $69 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.

July is one of the most affordable months to get away to Phoenix with Frontier Airlines. You could also find great prices on one-way and return tickets in August.

Begin your search one to three months ahead of your travel date to find cheaper fares on Frontier Airlines flights from Austin-Bergstrom Intl. Airport (AUS) 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.* Get your timing spot on, 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.

Click on our “Nonstop” filter when browsing for direct Frontier Airlines flights from AUS to PHX. You’ll also be able to compare other airlines offering the same nonstop route.

To find the earliest departures from AUS to PHX with Frontier Airlines, filter your search by “Early Morning” and “Morning.” Booking an early flight generally means you’ll 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.

Frontier Airlines flights from Austin-Bergstrom Intl. Airport (AUS) to Phoenix come in to Sky Harbor Intl. Airport (PHX). This is the main gateway to this destination.

Fly from AUS to PHX with Frontier Airlines and you can look forward to a host of benefits starting with a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee is typically charged if you cancel or change your flight more than 24 hours after it’s been confirmed. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter when looking for flights. To learn more about canceling or changing your reservation, go to “Trips,” select your flight and click on “Manage Booking.”