Southwest® flights from Knoxville to Philadelphia from $148

Promo Code

Low fares from Knoxville to Philadelphia

$

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 05/13/2026

One-way

Basic

From
$148

Low fares from Knoxville to Philadelphia

$

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 05/13/2026

One-way

Basic

From
$148
Seen: 16 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 04/14/2026

One-way

Basic

From
$148
Seen: 7 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 04/29/2026

One-way

Basic

From
$148
Seen: 1 hour ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 05/19/2026

One-way

Basic

From
$148
Seen: 16 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 06/10/2026

One-way

Basic

From
$148
Seen: 13 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 04/09/2026

One-way

Basic

From
$162
Seen: 11 hrs ago

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Explore flights from Knoxville to Philadelphia

Mar 2026
From$260*
Seen: 11 hrs ago
One Way/Basic
Apr 2026
From$148*
Seen: 7 hrs ago
One Way/Basic
May 2026
From$148*
Seen: 16 hrs ago
One Way/Basic
$148
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    • Range$148-$260

    *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:
    Mc Ghee Tyson Airport
    Arriving at:
    Philadelphia International Airport
    Distance:
    554 miles

    Route Information

    44† 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 44 weekly flights from Knoxville to Philadelphia on Southwest Airlines.
    To find the lowest fares by day and time to fly Knoxville 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 Knoxville 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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