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$87+ Cheap flights from Idaho to Austin (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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Cheap flight deals from Idaho to Austin

Keep the following information in mind while searching for Idaho to Austin flight deals. Data was 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 Idaho to Austin Bergstrom
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One-way flight from Idaho 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 Idaho to Austin

Cheapest flights from Idaho to Austin
Explore the most affordable flight options available from Idaho 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 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/231:10 pmGEG - AUS
1 stop5h 46mDelta
Tue 10/287:20 amAUS - GEG
1 stop8h 38mDelta
Deal found 9/11$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 Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:38 pmGEG - AUS
1 stop7h 18mDelta
Thu 10/164:15 pmAUS - GEG
1 stop7h 23mDelta
Deal found 9/11$195
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 Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2611:53 amGEG - AUS
1 stop6h 35mFrontier
Sun 9/286:30 amAUS - GEG
1 stop6h 28mFrontier
Deal found 9/11$215
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:50 pmGEG - AUS
1 stop5h 33mDelta
Mon 10/277:15 pmAUS - GEG
1 stop6h 28mDelta
Deal found 9/11$219
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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 Idaho to Austin that are best for you.

Fly from

Idaho

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

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Wed 11/19

6:05 am-5:55 pm

1 stop9h 50m

Austin Bergstrom

Mon 11/24

6:05 pm-10:50 pm

1 stop6h 45m

$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

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Thu 10/9

2:38 pm-11:56 pm

1 stop7h 18m

Austin Bergstrom

Thu 10/16

4:15 pm-9:38 pm

1 stop7h 23m

$195

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Thu 10/23

12:51 pm-12:22 am

1 stop9h 31m

Austin Bergstrom

Tue 10/28

6:17 am-1:05 pm

1 stop8h 48m

$198

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Mon 2/9

2:05 pm-11:03 pm

1 stop6h 58m

Austin Bergstrom

Sat 2/14

6:55 pm-10:44 pm

1 stop5h 49m

$207

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Idaho 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 Idaho to Austin

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

Currently, August is the cheapest month in which you can book a flight from Idaho to Austin (average of $285). Flying from Idaho 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 ID to AUS?

Find hourly flight availability from Idaho 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.

When flying from Idaho to Austin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

  • What airport do you fly into for flights to Austin from Idaho?

    Austin Bergstrom (AUS), located 7.5 mi from the city center, is the airport you fly into when you book flights from Idaho to Austin.

  • How long is the flight from Idaho to Austin?

    There are many flights that can get you from Idaho to Austin in 5h 46m. Fly via Southwest, Frontier, or Delta to get the fastest option. The distance between Idaho and Austin is about 1599 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $87. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Idaho to Austin for a low price.

  • What are the most popular routes from Idaho to Austin?

    The most popular route from Idaho to Austin is Boise Air Term. Gowen Fld - Austin Bergstrom. You may also consider Spokane - Austin Bergstrom or Jackson Hole - Austin Bergstrom.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Austin?

    Currently, August is the cheapest month in which you can book a flight from Idaho to Austin (average of $285). Flying from Idaho 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

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Top 6 airlines flying from Idaho to Austin

Discover the top 6 airlines that operate flights from Idaho 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$402FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$245Average$468FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$272Average$465FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$278Average$404FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$279Average$592FlexibilityNo cancel feeOn-time69%

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