Southwest® flights from Knoxville to Philadelphia from $138

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Low fares from Knoxville to Philadelphia

$

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/09/2026

One-way

Basic

From
$138

Low fares from Knoxville to Philadelphia

$

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/09/2026

One-way

Basic

From
$138
Seen: 16 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/23/2026

One-way

Basic

From
$138
Seen: 20 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/10/2026

One-way

Basic

From
$138
Seen: 11 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 10/31/2026

One-way

Basic

From
$150
Seen: 23 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/09/2026

One-way

Choice

From
$181
Seen: 16 hrs ago

Knoxville (TYS)to

Philadelphia (PHL)
Depart: 12/23/2026

One-way

Choice

From
$182
Seen: 20 hrs ago

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Explore flights from Knoxville to Philadelphia

Oct 2026
From$150*
Seen: 23 hrs ago
One Way/Basic
Nov 2026
From$263*
Seen: 11 hrs ago
One Way/Basic
Dec 2026
From$138*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $150
cmp-daily-histogram-bars-legend-max-price-aria-label $310
Displaying fares for October-2026
  • TYS–PHL, 10/09/2026: From $305
    09

    Fri

    OCT

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    10

    Sat

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    11

    Sun

  • TYS–PHL, 10/12/2026: From $310
    12

    Mon

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    13

    Tue

  • TYS–PHL, 10/14/2026: From $258
    14

    Wed

  • TYS–PHL, 10/15/2026: From $305
    15

    Thu

  • TYS–PHL, 10/16/2026: From $305
    16

    Fri

  • TYS–PHL, 10/17/2026: From $258
    17

    Sat

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    18

    Sun

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    19

    Mon

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    20

    Tue

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    21

    Wed

  • TYS–PHL, 10/22/2026: From $244
    22

    Thu

  • TYS–PHL, 10/23/2026: From $244
    23

    Fri

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    24

    Sat

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    25

    Sun

  • TYS–PHL, 10/26/2026: From $244
    26

    Mon

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    27

    Tue

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    28

    Wed

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    29

    Thu

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    30

    Fri

  • TYS–PHL, 10/31/2026: From $150
    31

    Sat

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    01

    Sun

    NOV

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    03

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    04

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    05

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    06

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    08

    Sun

    • Range$150-$310

    *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

    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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