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$86+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — AUS
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap 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 December 26, 2025.

This Frontier deal was found by Cheapflights users on 12/24. 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 12/2512:38 pmBOI - AUS
1 stop10h 36mFrontier
Sat 1/36:45 amAUS - BOI
1 stop6h 14mFrontier
Deal found 12/24$328
This Southwest deal was found by Cheapflights users on 12/24. 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.
Wed 12/3112:40 pmGEG - AUS
1 stop5h 20mSouthwest
Thu 1/15:35 amAUS - GEG
1 stop8h 20mSouthwest
Deal found 12/24$434
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Wed 12/314:00 pmGEG - AUS
1 stop5h 56mUnited Airlines
Thu 1/12:17 pmAUS - GEG
2 stops8h 41mUnited Airlines
Deal found 12/24$465
This Travelocity deal was found by Cheapflights users on 12/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:55 amBOI - AUS
1 stop7h 47mMultiple Airlines
Sun 1/46:45 amAUS - BOI
1 stop5h 58mMultiple Airlines
Deal found 12/25$515
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Wed 12/312:10 pmBOI - AUS
1 stop8h 49mUnited Airlines
Sun 1/44:21 pmAUS - BOI
1 stop7h 09mUnited Airlines
Deal found 12/24$537
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Wed 12/316:55 pmBOI - AUS
1 stop9h 08mUnited Airlines
Sat 1/35:30 amAUS - BOI
2 stops9h 06mUnited Airlines
Deal found 12/24$542
This WAYA deal was found by Cheapflights users on 12/24. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:02 pmGEG - AUS
1 stop10h 12mFrontier
Thu 1/111:13 amAUS - GEG
1 stop6h 40mFrontier
Deal found 12/24$559
This Alaska Airlines deal was found by Cheapflights users on 12/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:50 pmBOI - AUS
1 stop7h 50mAlaska Airlines
Sun 1/46:00 amAUS - BOI
2 stops10h 05mAlaska Airlines
Deal found 12/24$636
This Expedia deal was found by Cheapflights users on 12/24. 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.
Mon 12/295:30 amGEG - AUS
1 stop7h 45mMultiple Airlines
Thu 1/111:13 amAUS - GEG
1 stop6h 40mMultiple Airlines
Deal found 12/24$636
This Delta deal was found by Cheapflights users on 12/23. 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.
Wed 12/245:55 amIDA - AUS
1 stop6h 50mDelta
Tue 12/3012:09 pmAUS - IDA
1 stop7h 08mDelta
Deal found 12/23$651
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/306:00 amGEG - AUS
1 stop15h 59mUnited Airlines
Thu 1/12:17 pmAUS - GEG
2 stops8h 41mUnited Airlines
Deal found 12/24$704
This Southwest deal was found by Cheapflights users on 12/24. 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.
Mon 12/295:50 amGEG - AUS
2 stops9h 15mSouthwest
Thu 1/15:50 pmAUS - GEG
1 stop6h 10mSouthwest
Deal found 12/24$730

Find flight deals from Idaho to Austin

Keep the following information in mind while searching for Idaho to Austin flight deals. Data was last updated December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$182
(Frontier)

One-way from

$86
(WAYA)

Popular in

March

Cheapest in

September

Average price

$402
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 Idaho to Austin Bergstrom
Search Deals
One-way flight from Idaho to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 26, 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

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Thu 2/5

12:03 pm-12:16 am

1 stop10h 13m

Austin Bergstrom

Thu 2/19

6:45 am-11:27 am

1 stop6h 42m

$182

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sun 2/22

11:56 am-9:21 am

1 stop20h 25m

Austin Bergstrom

Wed 2/25

8:30 am-11:51 am

1 stop28h 21m

$195

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 1/15

2:19 pm-12:28 am

1 stop9h 09m

Austin Bergstrom

Mon 1/19

6:45 am-1:25 pm

1 stop7h 40m

$201

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 1/21

9:02 am-5:59 pm

1 stop7h 57m

Austin Bergstrom

Sat 1/24

7:15 am-3:10 pm

1 stop8h 55m

$216

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sun 1/18

9:48 am-4:52 pm

1 stop6h 04m

Austin Bergstrom

Sun 1/25

4:51 pm-9:52 pm

1 stop6h 01m

$217

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sun 1/18

1:58 pm-9:11 pm

1 stop6h 13m

Austin Bergstrom

Sun 1/25

6:05 am-1:08 pm

1 stop8h 03m

$217

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 1/16

1:55 pm-11:40 pm

1 stop8h 45m

Austin Bergstrom

Sun 1/18

3:30 pm-8:45 pm

1 stop6h 15m

$217

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Thu 1/22

2:20 pm-11:58 pm

1 stop8h 38m

Austin Bergstrom

Thu 1/29

1:58 pm-7:51 pm

1 stop6h 53m

$217

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Sun 1/18

7:16 pm-10:12 am

1 stop12h 56m

Austin Bergstrom

Thu 1/22

6:55 am-11:08 am

1 stop6h 13m

$217

SpokaneAustin

GEG - AUS

GEGAUS

Spokane

Thu 2/19

12:22 pm-12:16 am

1 stop9h 54m

Austin Bergstrom

Sun 3/1

9:12 am-7:17 pm

1 stop12h 05m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 44 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, March is the cheapest month in which you can book a flight from Idaho to Austin (average of $104). Flying from Idaho 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.

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 December 26, 2025.

It’s typically best to fly out from Idaho to Austin in the evening. Doing so could potentially save you 17% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

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

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

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 6h 32m. Fly via Frontier, Alaska Airlines, or United Airlines to get the fastest option. The distance between Idaho and Austin is about 1171 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 Delta, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from Southwest 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 Idaho Falls Fanning Field - 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, March is the cheapest month in which you can book a flight from Idaho to Austin (average of $104). Flying from Idaho 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
Round Rock
San Marcos
Georgetown
Pflugerville
Dripping Springs
Fredericksburg
Canyon Lake
Seguin
Horseshoe Bay

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Alternative routes for Idaho to Austin

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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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$179Average$248FlexibilityNo cancel feeOn-time62%
DeltaCheapest$204Average$394FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$250Average$478FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$265Average$397FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$275Average$352FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$279Average$444FlexibilityNo cancel feeOn-time69%

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