$171 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Sun Valley (SUN)

View $171 flight on Mon, Mar 23, 2026Opens in a new window

Popular airlines from Newark Liberty Intl. Airport (EWR) to Sun Valley, ID (SUN-Friedman Memorial)

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Cheap Flights from Newark Liberty Intl. Airport to Sun Valley (EWR-SUN)

Prices were available within the past 7 days and start at $171 for one-way flights and $340 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Dec 4 - Sun, Dec 7
EWR
New York
SUN
Sun Valley
$340 Roundtrip, found 2 days ago
$340
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Dec 4 from New York to Sun Valley, returning Sun, Dec 7, priced at $340 found 2 days ago
American Airlines
Thu, Jan 8 - Mon, Jan 12
EWR
New York
SUN
Sun Valley
$341 Roundtrip, found 1 day ago
$341
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 8 from New York to Sun Valley, returning Mon, Jan 12, priced at $341 found 1 day ago
Delta
Sun, Jan 11 - Wed, Jan 14
EWR
New York
SUN
Sun Valley
$341 Roundtrip, found 9 hours ago
$341
Roundtrip
found 9 hours ago
Select Delta flight, departing Sun, Jan 11 from New York to Sun Valley, returning Wed, Jan 14, priced at $341 found 9 hours ago
United
Fri, Dec 5 - Wed, Dec 10
EWR
New York
SUN
Sun Valley
$341 Roundtrip, found 4 hours ago
$341
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Dec 5 from New York to Sun Valley, returning Wed, Dec 10, priced at $341 found 4 hours ago
Delta
Wed, Sep 9 - Mon, Sep 14
EWR
New York
SUN
Sun Valley
$344 Roundtrip, found 6 days ago
$344
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Sep 9 from New York to Sun Valley, returning Mon, Sep 14, priced at $344 found 6 days ago
American Airlines
Sat, Feb 7 - Fri, Feb 13
EWR
New York
SUN
Sun Valley
$346 Roundtrip, found 1 day ago
$346
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Feb 7 from New York to Sun Valley, returning Fri, Feb 13, priced at $346 found 1 day ago
Delta
Sat, Feb 7 - Fri, Feb 13
EWR
New York
SUN
Sun Valley
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Feb 7 from New York to Sun Valley, returning Fri, Feb 13, priced at $349 found 1 day ago
Alaska Airlines
Sat, Feb 7 - Fri, Feb 13
EWR
New York
SUN
Sun Valley
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Feb 7 from New York to Sun Valley, returning Fri, Feb 13, priced at $349 found 1 day ago
Delta
Wed, Jan 14 - Tue, Jan 27
EWR
New York
SUN
Sun Valley
$351 Roundtrip, found 5 days ago
$351
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Jan 14 from New York to Sun Valley, returning Tue, Jan 27, priced at $351 found 5 days ago
Hawaiian Airlines
Thu, Jan 22 - Thu, Feb 5
EWR
New York
SUN
Sun Valley
$422 Roundtrip, found 5 days ago
$422
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 22 from New York to Sun Valley, returning Thu, Feb 5, priced at $422 found 5 days ago

Find the cheapest month to fly from New York (EWR) to Sun Valley (SUN)

January is typically the cheapest month to fly

From $340 - $849 per traveler.

Frequently asked questions

How much does a flight from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN) cost?
Snag a cheap one-way flight from $171 or cheap return flight from $340 from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN)?
The cheapest month to fly from EWR to SUN is December, when demand is low. Off-peak months are generally when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest EWR to SUN flight.
How many flights per day from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN)?
You'll need to catch a flight with a layover when traveling from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from EWR to SUN?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN)?
Book a flight from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN) last-minute?
Holding off until right before your break to book your flight from EWR to SUN generally means paying more. While it's possible to find some last-minute offers, there's no guarantee. Be flexible with your itinerary for a better chance of getting a bargain.
Is it cheaper to book an EWR to SUN flight and hotel package?
You'll generally save money by securing an EWR to SUN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've chosen your preferred accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Liberty Intl. Airport (EWR) to Friedman Memorial Airport (SUN)?
It's usually possible to cancel or reschedule your EWR to SUN flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Newark Liberty Intl. Airport
Destination airport
Friedman Memorial
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$340
Distance
2046 mi

Book with confidence

Newark Liberty Intl. Airport to Sun Valley Flights

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

 

The best time to book a flight from Newark Liberty Intl. Airport to Sun Valley

Sunday is one of the best days to book for cheap flights from Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $171 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 Newark Liberty Intl. Airport 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 Newark Liberty Intl. Airport 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.

 

Newark Liberty Intl. Airport to Sun Valley Flights

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*Available to One Key members.