$261 Cheap Flights from Appleton (ATW) to Sun Valley (SUN)

View $261 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Appleton, WI (ATW-Appleton Intl.) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Appleton to Sun Valley (ATW-SUN)

Prices were available within the past 7 days and start at $261 for one-way flights and $735 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$735 Roundtrip, found 1 hour ago
$735
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $735 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$773 Roundtrip, found 1 hour ago
$773
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $773 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$878 Roundtrip, found 1 hour ago
$878
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $878 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$894 Roundtrip, found 1 hour ago
$894
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $894 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$904 Roundtrip, found 1 hour ago
$904
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $904 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$910 Roundtrip, found 1 hour ago
$910
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $910 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$916 Roundtrip, found 1 hour ago
$916
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $916 found 1 hour ago
Delta
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$937 Roundtrip, found 1 hour ago
$937
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $937 found 1 hour ago
United
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$941 Roundtrip, found 1 hour ago
$941
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $941 found 1 hour ago
Delta
Tue, Oct 7 - Tue, Oct 14
ATW
Appleton
SUN
Sun Valley
$945 Roundtrip, found 1 hour ago
$945
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Oct 7 from Appleton to Sun Valley, returning Tue, Oct 14, priced at $945 found 1 hour ago
Flights from Appleton (ATW) to Sun Valley (SUN)
Origin airport
Appleton Intl.
Destination airport
Friedman Memorial
Airlines serving
Delta, United
Roundtrip price
$735
Distance
1280 mi

Appleton to Sun Valley Flights

The cheapest times to fly from Appleton 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 Appleton to Sun Valley are during the month of October. You can find some of the cheapest flights from Appleton to Sun Valley with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Appleton 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 Appleton 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 Appleton to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $261 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 Appleton 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 Appleton 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 Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN) cost?
Lock in a cheap one-way flight from $261 or cheap return flight from $735 from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN)?
October is the cheapest month to fly from ATW to SUN. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from ATW to SUN. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN)?
There aren't any daily nonstop flights from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from ATW to SUN?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN)?
To avoid potential delays on the Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being 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 Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN) last-minute?
Last-minute bookings from ATW to SUN are typically more expensive. To secure the best rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to land a cheap fare right before your journey.
Is it cheaper to book an ATW to SUN flight and hotel package?
Compared with arranging hotels and flights separately, booking an ATW to SUN flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Simply pick your flights and choose from our extensive range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Appleton Intl. Airport (ATW) to Friedman Memorial Airport (SUN)?
In most instances, you can reschedule or cancel your ATW to SUN flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further information, go to our Customer Service portal.

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*Available to One Key members.