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$155+ Cheap flights from Idaho Falls to Austin (IDA - 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — AUS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Idaho Falls to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) 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 17, 2025.

Round-trip from

$371
(Alaska Airlines)

One-way from

$155
(Kiwi.com)

Popular in

October

Cheapest in

February

Average price

$425
From Idaho Falls Fanning Field to Austin Bergstrom
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One-way flight from Idaho Falls Fanning Field to Austin Bergstrom
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Highest demand for flights based on searches. 7% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 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 Falls to Austin

Cheapest flights from Idaho Falls to Austin
Explore the most affordable flight options available from Idaho Falls to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/11:35 pmIDA - AUS
1 stop6h 31mAmerican Airlines
Mon 10/66:00 amAUS - IDA
1 stop7h 25mAmerican Airlines
Deal found 9/14$426
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/15:00 amIDA - AUS
1 stop5h 29mUnited Airlines
Mon 10/67:05 amAUS - IDA
2 stops11h 10mUnited Airlines
Deal found 9/14$475
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/306:13 amIDA - AUS
1 stop8h 05mAlaska Airlines
Sat 10/47:15 amAUS - IDA
1 stop9h 23mAlaska Airlines
Deal found 9/15$480
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Mon 11/249:43 pmIDA - AUS
1 stop22h 18mMultiple Airlines
Sun 11/3010:06 pmAUS - IDA
1 stop22h 02mMultiple Airlines
Deal found 9/16$538
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Mon 11/249:43 pmIDA - AUS
1 stop22h 18mMultiple Airlines
Sat 11/2910:06 pmAUS - IDA
1 stop18h 59mMultiple Airlines
Deal found 9/16$563
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/234:00 pmIDA - AUS
1 stop6h 58mUnited Airlines
Sat 9/271:00 pmAUS - IDA
1 stop5h 18mUnited Airlines
Deal found 9/16$581
This United Airlines deal was found by Cheapflights users on 9/16. 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 11/225:00 amIDA - AUS
1 stop5h 27mUnited Airlines
Fri 11/286:17 pmAUS - IDA
1 stop5h 35mUnited Airlines
Deal found 9/16$587
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 11/245:00 amIDA - AUS
1 stop5h 27mUnited Airlines
Fri 11/286:17 pmAUS - IDA
1 stop5h 35mUnited Airlines
Deal found 9/16$606
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/302:35 pmIDA - AUS
1 stop5h 30mUnited Airlines
Sat 10/44:18 pmAUS - IDA
2 stops18h 30mUnited Airlines
Deal found 9/15$608

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls 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 17, 2025.
Use the filters below to find and compare flights from Idaho Falls to Austin that are best for you.

Fly from

Idaho Falls

Fly to

Austin

Route

Depart

Return

Price

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Tue 3/10

8:00 am-4:38 pm

1 stop7h 38m

Austin Bergstrom

Wed 3/11

1:35 pm-10:38 pm

1 stop10h 03m

$371

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Tue 3/10

8:00 am-4:38 pm

1 stop7h 38m

Austin Bergstrom

Wed 3/11

1:35 pm-10:38 pm

1 stop10h 03m

$371

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Wed 10/1

1:35 pm-9:06 pm

1 stop6h 31m

Austin Bergstrom

Mon 10/6

6:00 am-12:25 pm

1 stop7h 25m

$426

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Tue 3/10

2:35 pm-10:34 pm

2 stops6h 59m

Austin Bergstrom

Wed 3/11

5:45 am-9:28 am

1 stop4h 43m

$456

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Tue 3/10

6:45 pm-12:54 am

1 stop5h 09m

Austin Bergstrom

Wed 3/11

1:40 pm-10:21 pm

2 stops9h 41m

$459

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Wed 10/1

5:00 am-11:29 am

1 stop5h 29m

Austin Bergstrom

Mon 10/6

7:05 am-5:15 pm

2 stops11h 10m

$475

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Mon 11/24

9:43 pm-9:01 pm

1 stop22h 18m

Austin Bergstrom

Sun 11/30

10:06 pm-7:08 pm

1 stop22h 02m

$538

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Mon 11/24

9:43 pm-9:01 pm

1 stop22h 18m

Austin Bergstrom

Sat 11/29

10:06 pm-4:05 pm

1 stop18h 59m

$563

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Mon 9/29

9:39 pm-8:58 pm

2 stops22h 19m

$155

Idaho FallsAustin

IDA - AUS

IDAAUS

Idaho Falls Fanning Field

Fri 10/10

10:57 pm-12:33 am

2 stops24h 36m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 14 results
1
2

Best time to book a flight from Idaho Falls to Austin

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

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

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

Find hourly flight availability from Idaho Falls 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 17, 2025.

It’s typically best to fly out from Idaho Falls to Austin at noon. Doing so could potentially save you 26% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Idaho Falls to Austin?

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 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Idaho Falls to Austin. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls 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 Idaho Falls to Austin?

    Airlines like Alaska Airlines, Hawaiian Airlines, and American Airlines fly from Idaho Falls to Austin in about 6h 31m. The time it takes to get you to your destination can typically vary by up to 1h 07m. The distance from Idaho Falls to Austin is about 1212 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    American Airlines, at $266, was found to be the cheapest airline from Idaho Falls to Austin.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. Users have found that American Airlines is 47% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Austin (average of $285). Flying from Idaho Falls 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Idaho Falls to Austin

Discover the top 4 airlines that operate flights from Idaho Falls 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$266Average$507FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$295Average$423FlexibilityNo cancel feeOn-time75%
DeltaCheapest$296Average$425FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$354Average$650FlexibilityNo cancel feeOn-time69%

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