Cheap Spirit Airlines flights Denver (DEN) to Austin (AUS)

Landing cheap one-way Spirit Airlines flights from DEN to AUS on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares for your next exciting adventure.**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.

Spirit Airlines flights to Austin are generally cheaper in the off-peak months of January and December. Whether you need a round-trip or one-way ticket, you could find a better deal then.

Begin your search one to three months ahead of your departure date to score cheap fares on Spirit Airlines flights from Denver Intl. Airport (DEN) to Austin-Bergstrom Intl. Airport (AUS). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to 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 trips.*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 the “Nonstop” filter when looking for direct Spirit Airlines flights from DEN to AUS. You can also compare other airlines servicing the same nonstop route.

Filter your results by “Early Morning” and “Morning” to browse the earliest departures from DEN to AUS. Leaving early means you’re 20% less likely to experience 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.

Catch a Spirit Airlines flight from Denver Intl. Airport (DEN) to Austin, and you’ll likely come in to Austin-Bergstrom Intl. Airport (AUS). This is the airline’s main hub in this city.

A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to travel from DEN to AUS with Spirit Airlines. Plus, when you join our One Key™ program, you can earn OneKeyCash™* on top of Spirit Airlines’s loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can modify or cancel your flight, although additional charges may apply if you booked more than 24 hours ago. Need flexible options? Use Expedia’s “No cancel fee” and “Changes included” filters to find flights that won’t charge extra if you need to alter your plans. To modify your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more details.