$145 Cheap Flights from Austin (AUS) to Sun Valley (SUN)

View $145 flight on Fri, Jan 23, 2026Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Austin to Sun Valley (AUS-SUN)

Prices were available within the past 7 days and start at $145 for one-way flights and $285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Feb 21 - Sat, Feb 28
AUS
Austin
SUN
Sun Valley
$285 Roundtrip, found 9 hours ago
$285
Roundtrip
found 9 hours ago
Select Delta flight, departing Sat, Feb 21 from Austin to Sun Valley, returning Sat, Feb 28, priced at $285 found 9 hours ago
Delta
Sat, Feb 21 - Tue, Feb 24
AUS
Austin
SUN
Sun Valley
$290 Roundtrip, found 9 hours ago
$290
Roundtrip
found 9 hours ago
Select Delta flight, departing Sat, Feb 21 from Austin to Sun Valley, returning Tue, Feb 24, priced at $290 found 9 hours ago
Alaska Airlines
Sun, Feb 22 - Wed, Feb 25
AUS
Austin
SUN
Sun Valley
$290 Roundtrip, found 9 hours ago
$290
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Sun, Feb 22 from Austin to Sun Valley, returning Wed, Feb 25, priced at $290 found 9 hours ago
American Airlines
Sat, Jan 17 - Sat, Jan 24
AUS
Austin
SUN
Sun Valley
$291 Roundtrip, found 6 hours ago
$291
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sat, Jan 17 from Austin to Sun Valley, returning Sat, Jan 24, priced at $291 found 6 hours ago
United
Sat, Jan 17 - Sat, Jan 24
AUS
Austin
SUN
Sun Valley
$291 Roundtrip, found 6 hours ago
$291
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Jan 17 from Austin to Sun Valley, returning Sat, Jan 24, priced at $291 found 6 hours ago
United
Mon, Jan 5 - Fri, Jan 9
AUS
Austin
SUN
Sun Valley
$293 Roundtrip, found 13 hours ago
$293
Roundtrip
found 13 hours ago
Select United flight, departing Mon, Jan 5 from Austin to Sun Valley, returning Fri, Jan 9, priced at $293 found 13 hours ago
United
Sat, Dec 6 - Mon, Dec 15
AUS
Austin
SUN
Sun Valley
$295 Roundtrip, found 13 hours ago
$295
Roundtrip
found 13 hours ago
Select United flight, departing Sat, Dec 6 from Austin to Sun Valley, returning Mon, Dec 15, priced at $295 found 13 hours ago
Delta
Sat, Jan 17 - Sat, Jan 24
AUS
Austin
SUN
Sun Valley
$296 Roundtrip, found 6 hours ago
$296
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, Jan 17 from Austin to Sun Valley, returning Sat, Jan 24, priced at $296 found 6 hours ago
United
Fri, Jan 23 - Mon, Jan 26
AUS
Austin
SUN
Sun Valley
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jan 23 from Austin to Sun Valley, returning Mon, Jan 26, priced at $298 found 1 day ago
Hawaiian Airlines
Mon, Feb 23 - Sat, Feb 28
AUS
Austin
SUN
Sun Valley
$336 Roundtrip, found 9 hours ago
$336
Roundtrip
found 9 hours ago
Select Hawaiian Airlines flight, departing Mon, Feb 23 from Austin to Sun Valley, returning Sat, Feb 28, priced at $336 found 9 hours ago

Alternative airports near Sun Valley

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Friedman Memorial SUN. Cheapest and Closest option available. Average driving time to city center is 23 minutes. Flights from $291
SUN
Friedman Memorial
CheapestClosest
Average driving time to city center23 min
Flights from $291
Flights from Austin (AUS) to Sun Valley (SUN)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Friedman Memorial
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$285
Distance
1295 mi

Austin to Sun Valley Flights

The cheapest times to fly from Austin to Sun Valley

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to Sun Valley are during the month of February. You can find some of the cheapest flights from Austin to Sun Valley with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Austin to Sun Valley

Sunday is one of the best days to book for cheap flights from Austin to Sun Valley: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Austin to Sun Valley

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $145 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to Sun Valley flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to Sun Valley airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN) cost?
Snag a cheap one-way flight from $145 or cheap return flight from $285 from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN)?
Planning your getaway for February is a great way to save, as it's the cheapest month for flights between AUS and SUN. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN)?
To find the cheapest airline that'll fly you from AUS to SUN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN)?
Direct flights from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from AUS to SUN?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN)?
Select a flight from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN) last-minute?
Holding off until just before your departure to book a flight from AUS to SUN often results in higher prices. While you may find some last-minute deals, they're not always guaranteed. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book an AUS to SUN flight and hotel package?
Booking an AUS to SUN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Friedman Memorial Airport (SUN)?
In most cases, you're able to cancel or reschedule your AUS to SUN flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, head to our Customer Service portal.

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*Available to One Key members.