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$85+ Cheap flights from Boise to Austin (BOI - AUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — AUS
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Boise to Austin

Cheapest flights from Boise to Austin
Explore the most affordable flight options available from Boise to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:38 pm
BOI
-
AUS
1 stop10h 38m
Frontier
Thu 3/56:45 am
AUS
-
BOI
1 stop6h 06m
Frontier
Deal found 2/18$188
This Frontier deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:03 pm
BOI
-
AUS
1 stop11h 18m
Frontier
Sun 4/126:45 am
AUS
-
BOI
1 stop5h 23m
Frontier
Deal found 2/20$190
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:56 am
BOI
-
AUS
1 stop11h 20m
Frontier
Wed 3/48:30 am
AUS
-
BOI
1 stop28h 21m
Frontier
Deal found 2/18$193
This Kiwi.com deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2612:15 pm
BOI
-
AUS
1 stop11h 01m
Frontier
Sat 3/2810:45 pm
AUS
-
BOI
1 stop13h 35m
Frontier
Deal found 2/17$202
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:38 pm
BOI
-
AUS
1 stop10h 38m
Frontier
Sat 3/711:01 am
AUS
-
BOI
1 stop24h 19m
Frontier
Deal found 2/18$214
This Kiwi.com deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2711:56 am
BOI
-
AUS
1 stop11h 20m
Frontier
Sat 3/711:01 am
AUS
-
BOI
1 stop24h 19m
Frontier
Deal found 2/18$220
This Frontier deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:38 pm
BOI
-
AUS
1 stop10h 38m
Frontier
Fri 2/276:45 am
AUS
-
BOI
1 stop5h 26m
Frontier
Deal found 2/17$232
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/287:30 am
BOI
-
AUS
1 stop7h 05m
Delta
Tue 3/316:06 pm
AUS
-
BOI
1 stop6h 39m
Delta
Deal found 2/20$243
This Expedia deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:53 am
BOI
-
AUS
1 stop11h 28m
Multiple Airlines
Sat 4/253:39 pm
AUS
-
BOI
1 stop9h 20m
Multiple Airlines
Deal found 2/18$244
This Kiwi.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:15 pm
BOI
-
AUS
1 stop7h 19m
Hawaiian Airlines
Tue 4/144:32 pm
AUS
-
BOI
1 stop8h 15m
Hawaiian Airlines
Deal found 2/21$250

Find flight deals from Boise to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Austin (AUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$190
(Frontier)

One-way from

$85
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$432
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Austin Bergstrom flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Austin Bergstrom flights.
Search Deals
From Boise Air Term. Gowen Fld to Austin Bergstrom
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise to Austin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 21, 2026.
Use the filters below to find and compare flights from Boise to Austin that are best for you.

Fly from

Boise

Fly to

Austin

Route

Depart

Return

Price

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 4/9

12:03 pm-12:21 am

1 stop11h 18m

Austin Bergstrom

Sun 4/12

6:45 am-11:08 am

1 stop5h 23m

$190

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 3/28

1:45 pm-11:53 pm

1 stop9h 08m

Austin Bergstrom

Tue 3/31

6:03 am-1:05 pm

1 stop8h 02m

$243

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 5/1

5:40 am-1:25 pm

1 stop6h 45m

Austin Bergstrom

Mon 5/4

5:55 pm-12:17 am

1 stop7h 22m

$243

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 4/30

1:52 pm-11:48 pm

1 stop8h 56m

Austin Bergstrom

Mon 5/4

5:55 pm-12:17 am

1 stop7h 22m

$243

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 3/5

12:38 pm-12:16 am

1 stop10h 38m

$85

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 2/26

12:38 pm-12:16 am

1 stop10h 38m

$93

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 4/16

11:53 am-8:46 pm

1 stop7h 53m

$95

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 2/27

11:56 am-12:16 am

1 stop11h 20m

$98

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sun 3/15

12:15 pm-10:03 pm

1 stop8h 48m

$117

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 3/31

5:00 am-1:04 pm

2 stops7h 04m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 14 results
1
2

Compare providers for flights from Boise to Austin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Austin in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Austin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Austin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boise to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Boise with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boise to Austin

How far ahead should I book a flight from Boise to Austin?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Austin. Price data was last updated on February 20, 2026.

The best time to book flights from Boise to Austin is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boise to Austin?

Currently, February is the cheapest month in which you can book a flight from Boise to Austin (average of $114). Flying from Boise to Austin in August is currently the most expensive (average of $244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Austin. Reviews last updated February 21, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Boise to Austin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,298 reviews
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,228 reviews
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,335 reviews
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,334 reviews
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,046 reviews
Southwest
8.0
Very good
4,298 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Boise to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boise to Austin?

    There are many flights that can get you from Boise to Austin in 9h 08m. Fly via Frontier or Delta to get the fastest option. There are 1373 mi between Boise and Austin. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boise to Austin round-trip?

    Flying on Frontier is currently your cheapest option to Austin, with prices starting at $164. Additional round-trip tickets that might be worth considering are offered by Southwest and Delta, with the lowest prices starting at $183 and $185, respectively. Frontier is priced at 55% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boise to Austin one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $98. Southwest flights start at $108 while deals on Alaska Airlines start at $128 one-way.

  • Can I find deals for flights from Boise to Austin that include hotel bookings?

    Yes. In addition to deals on Boise to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Austin.

  • Can I find deals for business class flights from Boise to Austin?

    Yes. Cheapflights offers flight deals from Boise to Austin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Austin?

    Currently, February is the cheapest month in which you can book a flight from Boise to Austin (average of $114). Flying from Boise to Austin in August is currently the most expensive (average of $244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Cedar Park
San Marcos
Fredericksburg
Round Rock
Georgetown
Bastrop
Pflugerville
Dripping Springs
Canyon Lake
Seguin
Horseshoe Bay

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Boise to Austin

Discover the top 5 airlines that operate flights from Boise to Austin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$179Average$240FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$183Average$382FlexibilityNo cancel feeOn-time63%
DeltaCheapest$191Average$348FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$275Average$342FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$276Average$421FlexibilityNo cancel feeOn-time69%

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