$132 Cheap Flights from Philadelphia (PHL) to Boise (BOI)

View $132 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)

Cheap Flights from Philadelphia to Boise (PHL-BOI)

Prices were available within the past 7 days and start at $132 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Wed, Nov 19
PHL
Philadelphia
BOI
Boise
$258 Roundtrip, found 2 days ago
$258
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Philadelphia to Boise, returning Wed, Nov 19, priced at $258 found 2 days ago
Frontier Airlines
Thu, Nov 13 - Sun, Nov 23
PHL
Philadelphia
BOI
Boise
$273 Roundtrip, found 2 days ago
$273
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Philadelphia to Boise, returning Sun, Nov 23, priced at $273 found 2 days ago
Frontier Airlines
Thu, Nov 6 - Thu, Nov 13
PHL
Philadelphia
BOI
Boise
$302 Roundtrip, found 4 hours ago
$302
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Philadelphia to Boise, returning Thu, Nov 13, priced at $302 found 4 hours ago
Delta
Sun, Feb 15 - Wed, Feb 18
PHL
Philadelphia
BOI
Boise
$309 Roundtrip, found 2 days ago
$309
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Feb 15 from Philadelphia to Boise, returning Wed, Feb 18, priced at $309 found 2 days ago
Frontier Airlines
Mon, Nov 24 - Fri, Dec 5
PHL
Philadelphia
BOI
Boise
$317 Roundtrip, found 3 days ago
$317
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Nov 24 from Philadelphia to Boise, returning Fri, Dec 5, priced at $317 found 3 days ago
Frontier Airlines
Fri, Jan 2 - Thu, Jan 15
PHL
Philadelphia
BOI
Boise
$319 Roundtrip, found 4 days ago
$319
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Fri, Jan 2 from Philadelphia to Boise, returning Thu, Jan 15, priced at $319 found 4 days ago
Hawaiian Airlines
Mon, Dec 15 - Wed, Dec 24
PHL
Philadelphia
BOI
Boise
$321 Roundtrip, found 3 days ago
$321
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Mon, Dec 15 from Philadelphia to Boise, returning Wed, Dec 24, priced at $321 found 3 days ago
United
Mon, Jan 12 - Sat, Jan 17
PHL
Philadelphia
BOI
Boise
$325 Roundtrip, found 4 days ago
$325
Roundtrip
found 4 days ago
Select United flight, departing Mon, Jan 12 from Philadelphia to Boise, returning Sat, Jan 17, priced at $325 found 4 days ago
Delta
Sat, Jan 17 - Sat, Jan 24
PHL
Philadelphia
BOI
Boise
$328 Roundtrip, found 4 days ago
$328
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Jan 17 from Philadelphia to Boise, returning Sat, Jan 24, priced at $328 found 4 days ago
American Airlines
Sun, Jan 18 - Tue, Jan 20
PHL
Philadelphia
BOI
Boise
$337 Roundtrip, found 11 hours ago
$337
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Sun, Jan 18 from Philadelphia to Boise, returning Tue, Jan 20, priced at $337 found 11 hours ago

Find the cheapest month to fly from Philadelphia (PHL) to Boise (BOI)

April is typically the cheapest month to fly

From $188 - $526 per traveler.

Alternative airports near Boise

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

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $557
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $557

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI) cost?
Snag a cheap one-way flight from $132 or cheap return flight from $258 from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI) 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 Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)?
The cheapest month to fly from PHL to BOI is November, when demand is low. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from PHL to BOI. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)?
There are no daily direct flights from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from PHL to BOI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on various 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 Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)?
To avoid potential delays on the Philadelphia Intl. Airport (PHL) to Boise Airport (BOI) route, fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Philadelphia Intl. Airport (PHL) to Boise Airport (BOI) last-minute?
Booking your plane ticket from PHL to BOI just before your getaway is generally more expensive. However, if there's some wiggle room with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a PHL to BOI flight and hotel package?
You can save money by booking a PHL to BOI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Boise Airport (BOI)?
If you reserved your PHL to BOI flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$258
Distance
2106 mi

Book with confidence

Philadelphia to Boise Flights

The cheapest times to fly from Philadelphia to Boise

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

 

The best time to book a flight from Philadelphia to Boise

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

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 Philadelphia to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $132 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 Philadelphia to Boise 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 Philadelphia to Boise 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.

 

Philadelphia to Boise Flights

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*Available to One Key members.