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$87+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — AUS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Austin Bergstrom are usually found in September or January, booked 35 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap 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 September 11, 2025.

Round-trip from

$143
(Priceline)

One-way from

$87
(Southwest)

Popular in

March

Cheapest in

September

Average price

$327
From Boise Air Term. Gowen Fld to Austin Bergstrom
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One-way flight from Boise Air Term. Gowen Fld to Austin Bergstrom
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Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:28 pmBOI - AUS
1 stop8h 24mFrontier
Sun 10/266:00 amAUS - BOI
1 stop6h 43mFrontier
Deal found 9/10$143
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:50 amBOI - AUS
1 stop7h 25mSouthwest
Wed 10/85:55 amAUS - BOI
1 stop5h 50mSouthwest
Deal found 9/9$174
This Frontier deal was found by Cheapflights users on 9/10. 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 10/912:28 pmBOI - AUS
1 stop11h 05mFrontier
Sun 10/126:00 amAUS - BOI
1 stop6h 43mFrontier
Deal found 9/10$186
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 10/74:00 pmBOI - AUS
1 stop6h 56mDelta
Sun 10/125:14 amAUS - BOI
1 stop6h 03mDelta
Deal found 9/10$194
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:55 pmBOI - AUS
1 stop7h 40mSouthwest
Tue 10/285:20 pmAUS - BOI
1 stop6h 45mSouthwest
Deal found 9/8$213
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:45 amBOI - AUS
1 stop7h 56mUnited Airlines
Wed 10/84:44 pmAUS - BOI
2 stops8h 00mUnited Airlines
Deal found 9/9$214
This Delta deal was found by Cheapflights users on 9/9. 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.
Fri 10/1011:39 pmBOI - AUS
1 stop8h 59mDelta
Wed 10/156:04 pmAUS - BOI
1 stop7h 04mDelta
Deal found 9/9$220
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/189:30 amBOI - AUS
1 stop6h 34mUnited Airlines
Sun 10/197:00 amAUS - BOI
1 stop7h 43mUnited Airlines
Deal found 9/11$225
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/412:55 pmBOI - AUS
2 stops7h 50mSouthwest
Fri 11/76:40 pmAUS - BOI
1 stop6h 55mSouthwest
Deal found 9/11$231
This Delta deal was found by Cheapflights users on 9/9. 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.
Sun 12/75:35 amBOI - AUS
1 stop6h 25mDelta
Wed 12/106:05 amAUS - BOI
1 stop8h 09mDelta
Deal found 9/9$233
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:17 pmBOI - AUS
1 stop5h 41mUnited Airlines
Tue 11/1112:15 pmAUS - BOI
2 stops8h 30mUnited Airlines
Deal found 9/10$238

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 September 11, 2025.
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

Tue 10/7

8:50 am-5:15 pm

1 stop7h 25m

Austin Bergstrom

Wed 10/8

5:55 am-10:45 am

1 stop5h 50m

$174

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 10/9

12:28 pm-12:33 am

1 stop11h 05m

Austin Bergstrom

Sun 10/12

6:00 am-11:43 am

1 stop6h 43m

$186

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 11/4

1:25 pm-8:45 pm

1 stop6h 20m

Austin Bergstrom

Fri 11/7

5:36 pm-10:30 pm

1 stop5h 54m

$194

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 10/10

11:39 pm-9:38 am

1 stop8h 59m

Austin Bergstrom

Wed 10/15

6:16 am-1:20 pm

1 stop8h 04m

$194

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 10/7

4:00 pm-11:56 pm

1 stop6h 56m

Austin Bergstrom

Sun 10/12

5:14 am-10:17 am

1 stop6h 03m

$194

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 10/23

3:55 pm-12:35 am

1 stop7h 40m

Austin Bergstrom

Tue 10/28

5:20 pm-11:05 pm

1 stop6h 45m

$213

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 10/18

9:30 am-5:04 pm

1 stop6h 34m

Austin Bergstrom

Sun 10/19

7:00 am-1:43 pm

1 stop7h 43m

$225

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 11/4

12:55 pm-9:45 pm

2 stops7h 50m

Austin Bergstrom

Fri 11/7

6:40 pm-12:35 am

1 stop6h 55m

$231

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 11/7

5:17 pm-11:58 pm

1 stop5h 41m

Austin Bergstrom

Tue 11/11

12:15 pm-7:45 pm

2 stops8h 30m

$238

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 11/25

5:35 am-12:50 pm

1 stop6h 15m

Austin Bergstrom

Tue 12/2

5:50 pm-10:25 pm

1 stop5h 35m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
2

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 August 29, 2025.

The best time to book flights from Boise to Austin is 29 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, August is the cheapest month in which you can book a flight from Boise to Austin (average of $285). Flying from Boise to Austin in March is currently the most expensive (average of $362). 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.

What is the cheapest time of day to fly from BOI to AUS?

Find hourly flight availability from Boise to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Boise to Austin is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 7% on airfare.

What is the cheapest day to fly from Boise to Austin?

Use this chart to determine the cheapest time to fly round-trip from Boise to Austin. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boise to Austin flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 11, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 6h 20m. Fly via Southwest, Frontier, or American Airlines 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 Spirit Airlines is currently your cheapest option to Austin, with prices starting at $82. Additional round-trip tickets that might be worth considering are offered by Delta and Alaska Airlines, with the lowest prices starting at $232 and $245, respectively. Spirit Airlines is priced at 79% lower than the current average price of a flight leaving 3 months from now.

  • 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, August is the cheapest month in which you can book a flight from Boise to Austin (average of $285). Flying from Boise to Austin in March is currently the most expensive (average of $362). 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
San Marcos
Round Rock
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Cedar Park
Canyon Lake
Seguin
Horseshoe Bay

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Austin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Boise to Austin

Discover the top 6 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$82Average$279FlexibilityNo cancel feeOn-time65%
DeltaCheapest$232Average$364FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$245Average$512FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$272Average$465FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$278Average$404FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$279Average$533FlexibilityNo cancel feeOn-time69%

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