Southwest® flights from Knoxville to Phoenix from $131

Promo Code

Low fares from Knoxville to Phoenix

$

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/09/2026

One-way

Basic

From
$131

Low fares from Knoxville to Phoenix

$

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/09/2026

One-way

Basic

From
$131
Seen: 8 hrs ago

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/16/2026

One-way

Basic

From
$131
Seen: 1 hour ago

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/11/2026

One-way

Basic

From
$133
Seen: 23 hrs ago

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/05/2026

One-way

Basic

From
$133
Seen: 10 hrs ago

Knoxville (TYS)to

Phoenix (PHX)
Depart: 10/31/2026

One-way

Basic

From
$133
Seen: 21 hrs ago

Knoxville (TYS)to

Phoenix (PHX)
Depart: 09/02/2026

One-way

Basic

From
$168
Seen: 5 hrs ago

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Explore flights from Knoxville to Phoenix

Aug 2026
From$290*
Seen: 16 hrs ago
One Way/Basic
Sep 2026
From$131*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$133*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $131
cmp-daily-histogram-bars-legend-max-price-aria-label $514
Displaying fares for August-2026
  • TYS–PHX, 08/11/2026: From $454
    11

    Tue

    AUG

  • TYS–PHX, 08/12/2026: From $355
    12

    Wed

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    13

    Thu

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    14

    Fri

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    15

    Sat

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    16

    Sun

  • TYS–PHX, 08/17/2026: From $345
    17

    Mon

  • TYS–PHX, 08/18/2026: From $290
    18

    Tue

  • TYS–PHX, 08/19/2026: From $290
    19

    Wed

  • TYS–PHX, 08/20/2026: From $345
    20

    Thu

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    21

    Fri

  • TYS–PHX, 08/22/2026: From $290
    22

    Sat

  • TYS–PHX, 08/23/2026: From $345
    23

    Sun

  • TYS–PHX, 08/24/2026: From $345
    24

    Mon

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • TYS–PHX, 08/27/2026: From $294
    27

    Thu

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

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    30

    Sun

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • TYS–PHX, 09/01/2026: From $168
    01

    Tue

    SEP

  • TYS–PHX, 09/02/2026: From $168
    02

    Wed

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    03

    Thu

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    04

    Fri

  • TYS–PHX, 09/05/2026: From $133
    05

    Sat

  • TYS–PHX, 09/06/2026: From $260
    06

    Sun

  • TYS–PHX, 09/07/2026: From $514
    07

    Mon

  • TYS–PHX, 09/08/2026: From $264
    08

    Tue

  • TYS–PHX, 09/09/2026: From $131
    09

    Wed

  • TYS–PHX: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

    • Range$131-$514

    *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:
    Sky Harbor International Airport
    Distance:
    1599 miles

    Route Information

    76† 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 76 weekly flights from Knoxville to Phoenix on Southwest Airlines.
    To find the lowest fares by day and time to fly Knoxville to Phoenix with Southwest, check out our Low Fare Calendar.
    You can rent a car at Sky Harbor International Airport book yours with your flight.
    Yes! Flights from Knoxville to Phoenix—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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