$90 Cheap Spirit Airlines flights Austin (AUS) to Pittsburgh (PIT)

You can find cheap return Spirit Airlines flights from $170 from AUS to PIT by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $90 for a one-way journey.**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.

Begin your search one to three months before your departure to get cheaper fares on Spirit Airlines flights from Austin-Bergstrom Intl. Airport (AUS) to Pittsburgh Intl. Airport (PIT). 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 cut 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.

To find the earliest departures from AUS to PIT with Spirit Airlines, sort your results by "Morning" and "Early Morning." Choosing an early flight generally means cancellations are less likely.**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.

Depart from AUS to PIT with Spirit Airlines and enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a Free Spirit and One Key™ member, you could also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.