Southwest® flights from Boise to Philadelphia from $159

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Low fares from Boise to Philadelphia

$

Boise (BOI)to

Philadelphia (PHL)
Depart: 05/09/2026

One-way

Basic

From
$159
Seen: 19 hrs ago

Boise (BOI)to

Philadelphia (PHL)
Depart: 06/04/2026

One-way

Basic

From
$167
Seen: 22 hrs ago

Boise (BOI)to

Philadelphia (PHL)
Depart: 05/09/2026

One-way

Choice

From
$199
Seen: 19 hrs ago

Boise (BOI)to

Philadelphia (PHL)
Depart: 06/04/2026

One-way

Choice

From
$207
Seen: 22 hrs ago

Boise (BOI)to

Philadelphia (PHL)
Depart: 04/17/2026

One-way

Basic

From
$239
Seen: 12 hrs ago

Boise (BOI)to

Philadelphia (PHL)
Depart: 05/10/2026

One-way

Basic

From
$239
Seen: 20 minutes ago

Looking for more low-fare flights?

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Find low fares

Explore flights from Boise to Philadelphia

Mar 2026
From$369*
Seen: 18 hrs ago
One Way/Basic
Apr 2026
From$239*
Seen: 12 hrs ago
One Way/Basic
May 2026
From$159*
Seen: 19 hrs ago
One Way/Basic
$261
Displaying fares for March-2026
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    • Range$261-$408

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Boise Airport
    Arriving at:
    Philadelphia International Airport
    Distance:
    2113 miles

    Route Information

    50† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 50 weekly flights from Boise to Philadelphia on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise to Philadelphia with Southwest, check out our Low Fare Calendar.
    You can rent a car at Philadelphia International Airport book yours with your flight.
    Yes! Flights from Boise to Philadelphia—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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