$144 Cheap Delta flights Boise (BOI) to Austin (AUS)

Use the “Price (lowest to highest)” filter on Expedia to look for cheap Delta Air Lines round-trip flights from $273 from BOI to AUS. Affordable one-way fares from $144 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 one-way or return flights to Austin in January or December. You could find lower fares with Delta Air Lines during these quieter months.

To find cheap Delta Air Lines fares from Boise Airport (BOI) to Austin-Bergstrom Intl. Airport (AUS), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the price you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.

Fill in your dates, click search and select “Nonstop” on Expedia to find any direct flights from BOI to AUS with Delta Air Lines or another airline.

Filter your results by “Morning” and “Early Morning” to see the earliest flights from BOI to AUS. Setting off early means you’re 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.

Board a Delta Air Lines flight from Boise Airport (BOI) to Austin, and you’ll probably come in to Austin-Bergstrom Intl. Airport (AUS). This is the airline’s primary hub in this destination.

Jetting off from BOI to AUS with Delta Air Lines comes with a range of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making your booking, but your airline may charge you after that. For more information about modifying your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your itinerary without additional charges, check the “No cancel fee” or “Changes included” filter when organizing your next getaway.