$104 Cheap Flights from Austin (AUS) to Boise (BOI)

View $104 flight on Tue, May 20, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Austin to Boise (AUS-BOI)

Prices were available within the past 7 days and start at $104 for one-way flights and $198 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, May 15 - Tue, May 20
AUS
Austin
BOI
Boise
$198 Roundtrip, found 8 hours ago
$198
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Austin to Boise, returning Tue, May 20, priced at $198 found 8 hours ago
Frontier Airlines
Thu, May 15 - Sun, May 18
AUS
Austin
BOI
Boise
$208 Roundtrip, found 8 hours ago
$208
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Austin to Boise, returning Sun, May 18, priced at $208 found 8 hours ago
Spirit Airlines
Mon, May 5 - Fri, May 9
AUS
Austin
BOI
Boise
$210 Roundtrip, found 5 days ago
$210
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Mon, May 5 from Austin to Boise, returning Fri, May 9, priced at $210 found 5 days ago
Frontier Airlines
Sun, May 18 - Tue, May 20
AUS
Austin
BOI
Boise
$218 Roundtrip, found 8 hours ago
$218
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from Austin to Boise, returning Tue, May 20, priced at $218 found 8 hours ago
Spirit Airlines
Mon, May 5 - Mon, May 12
AUS
Austin
BOI
Boise
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Mon, May 5 from Austin to Boise, returning Mon, May 12, priced at $240 found 3 days ago
Alaska Airlines
Sat, Aug 9 - Mon, Aug 11
AUS
Austin
BOI
Boise
$243 Roundtrip, found 1 day ago
$243
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 9 from Austin to Boise, returning Mon, Aug 11, priced at $243 found 1 day ago
Southwest Airlines
Sat, Aug 9 - Mon, Aug 11
AUS
Austin
BOI
Boise
$243 Roundtrip, found 1 day ago
$243
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Sat, Aug 9 from Austin to Boise, returning Mon, Aug 11, priced at $243 found 1 day ago
Spirit Airlines
Mon, May 5 - Mon, May 12
AUS
Austin
BOI
Boise
$245 Roundtrip, found 3 days ago
$245
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Mon, May 5 from Austin to Boise, returning Mon, May 12, priced at $245 found 3 days ago
Delta
Sat, Jun 14 - Mon, Jun 16
AUS
Austin
BOI
Boise
$247 Roundtrip, found 8 hours ago
$247
Roundtrip
found 8 hours ago
Select Delta flight, departing Sat, Jun 14 from Austin to Boise, returning Mon, Jun 16, priced at $247 found 8 hours ago
Frontier Airlines
Thu, May 15 - Thu, May 22
AUS
Austin
BOI
Boise
$248 Roundtrip, found 6 hours ago
$248
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Austin to Boise, returning Thu, May 22, priced at $248 found 6 hours ago
Flights from Austin (AUS) to Boise (BOI)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$198
Distance
1373 mi

Austin to Boise Flights

The cheapest times to fly from Austin to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to Boise are during the month of May. You can find some of the cheapest flights from Austin to Boise with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Austin to Boise

Sunday is one of the best days to book for cheap flights from Austin to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Austin to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $104 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI) cost?
Discover the latest flight deals from AUS to BOI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from AUS to BOI?
The cheapest flights from AUS to BOI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from AUS to BOI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from AUS to BOI. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI)?
Nonstop flights from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filter tool. Enter your dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from AUS to BOI?
Generally you’ll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from AUS to BOI?
Consider booking with Alaska Airlines if you’d like to fly straight from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI) without any delays. This airline has the best track record for punctuality, with an on-time score of 84%. Want to be updated if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI)?
To land at Boise Airport (BOI) on time, book a flight that leaves from Austin-Bergstrom Intl. Airport (AUS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI) last-minute?
Last-minute fares from AUS to BOI are generally more expensive. To lock in the cheapest rates, start searching for flights as early as possible. That being said, if you’re flexible with your travel plans, you may score a cheap ticket right before your journey.
Is it cheaper to book an AUS to BOI flight and hotel package?
You’ll typically save money by securing an AUS to BOI flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. Once you’ve selected your preferred accommodations and flights, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Boise Airport (BOI)?
Typically, it’s possible to reschedule or cancel your AUS to BOI flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are allowed and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.