$171 Cheap Flights from Sun Valley (SUN) to Philadelphia (PHL)

View $171 flight on Tue, Dec 30, 2025Opens in a new window

Popular airlines from Sun Valley, ID (SUN-Friedman Memorial) to Philadelphia Intl. Airport (PHL)

Cheap Flights from Sun Valley to Philadelphia (SUN-PHL)

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, Jan 15 - Tue, Jan 20
SUN
Sun Valley
PHL
Philadelphia
$340 Roundtrip, found 4 days ago
$340
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Jan 15 from Sun Valley to Philadelphia, returning Tue, Jan 20, priced at $340 found 4 days ago
Delta
Wed, Nov 19 - Sat, Dec 6
SUN
Sun Valley
PHL
Philadelphia
$341 Roundtrip, found 3 days ago
$341
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Nov 19 from Sun Valley to Philadelphia, returning Sat, Dec 6, priced at $341 found 3 days ago
Delta
Wed, Nov 19 - Sat, Nov 22
SUN
Sun Valley
PHL
Philadelphia
$346 Roundtrip, found 3 days ago
$346
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Nov 19 from Sun Valley to Philadelphia, returning Sat, Nov 22, priced at $346 found 3 days ago
Delta
Mon, Nov 3 - Sat, Nov 22
SUN
Sun Valley
PHL
Philadelphia
$351 Roundtrip, found 3 days ago
$351
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Nov 3 from Sun Valley to Philadelphia, returning Sat, Nov 22, priced at $351 found 3 days ago
Delta
Thu, Nov 20 - Sat, Dec 6
SUN
Sun Valley
PHL
Philadelphia
$370 Roundtrip, found 3 days ago
$370
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Nov 20 from Sun Valley to Philadelphia, returning Sat, Dec 6, priced at $370 found 3 days ago
Delta
Thu, Nov 20 - Sat, Nov 22
SUN
Sun Valley
PHL
Philadelphia
$375 Roundtrip, found 3 days ago
$375
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Nov 20 from Sun Valley to Philadelphia, returning Sat, Nov 22, priced at $375 found 3 days ago
Delta
Thu, Nov 20 - Tue, Nov 25
SUN
Sun Valley
PHL
Philadelphia
$399 Roundtrip, found 3 days ago
$399
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Nov 20 from Sun Valley to Philadelphia, returning Tue, Nov 25, priced at $399 found 3 days ago
United
Wed, Dec 10 - Thu, Dec 25
SUN
Sun Valley
PHL
Philadelphia
$411 Roundtrip, found 4 days ago
$411
Roundtrip
found 4 days ago
Select United flight, departing Wed, Dec 10 from Sun Valley to Philadelphia, returning Thu, Dec 25, priced at $411 found 4 days ago
American Airlines
Thu, Dec 18 - Thu, Jan 8
SUN
Sun Valley
PHL
Philadelphia
$421 Roundtrip, found 3 days ago
$421
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Dec 18 from Sun Valley to Philadelphia, returning Thu, Jan 8, priced at $421 found 3 days ago
Hawaiian Airlines
Sun, Oct 26 - Sat, Nov 8
SUN
Sun Valley
PHL
Philadelphia
$462 Roundtrip, found 3 days ago
$462
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sun, Oct 26 from Sun Valley to Philadelphia, returning Sat, Nov 8, priced at $462 found 3 days ago

Alternative airports near Philadelphia

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

Select flight to Philadelphia Intl. PHL. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $570
PHL
Philadelphia Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $570

Frequently asked questions

How much does a flight from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL) cost?
Snag a cheap one-way flight from $171 or cheap return flight from $340 from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL) 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 Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL)?
Traveling in January may help you find better deals, as it's the cheapest month for flights between SUN and PHL. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline flying from SUN to PHL, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL)?
Direct flights from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SUN to PHL?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL)?
To avoid potential delays on the Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL) route, travel before 3 PM. Later flights are 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 Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL) last-minute?
Waiting until just before your departure to book a ticket from SUN to PHL often results in higher prices. While you may come across some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to boost your chances of landing a bargain.
Is it cheaper to book a SUN to PHL flight and hotel package?
You'll generally save money by booking a SUN to PHL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your ideal accommodations and flights, consider adding extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Friedman Memorial Airport (SUN) to Philadelphia Intl. Airport (PHL)?
If you booked your SUN to PHL flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Friedman Memorial
Destination airport
Philadelphia Intl.
Roundtrip price
$340
Distance
2012 mi

Book with confidence

Book with confidence

Sun Valley to Philadelphia Flights

The cheapest times to fly from Sun Valley to Philadelphia

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 Sun Valley to Philadelphia are during the month of January. You can find some of the cheapest flights from Sun Valley to Philadelphia with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Sun Valley to Philadelphia: 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 Sun Valley to Philadelphia

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 Sun Valley to Philadelphia 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 Sun Valley to Philadelphia 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 Sun Valley to Philadelphia 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.

 

Sun Valley to Philadelphia Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.