Southwest® flights from Seattle/Tacoma to Phoenix from $99

Promo Code

Low fares from Seattle/Tacoma to Phoenix

$

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/29/2026

One-way

Basic

From
$99
Seen: 19 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/26/2026

One-way

Basic

From
$99
Seen: 19 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/22/2026

One-way

Basic

From
$99
Seen: 3 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/21/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/28/2026

One-way

Basic

From
$99
Seen: 14 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 08/27/2026

One-way

Basic

From
$99
Seen: 3 hrs ago

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Explore flights from Seattle/Tacoma to Phoenix

Aug 2026
From$99*
Seen: 3 hrs ago
One Way/Basic
Sep 2026
From$104*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$119*
Seen: 6 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $99
cmp-daily-histogram-bars-legend-max-price-aria-label $289
Displaying fares for August-2026
  • SEA–PHX, 08/01/2026: From $264
    01

    Sat

    AUG

  • SEA–PHX, 08/02/2026: From $247
    02

    Sun

  • SEA–PHX, 08/03/2026: From $247
    03

    Mon

  • SEA–PHX, 08/04/2026: From $224
    04

    Tue

  • SEA–PHX, 08/05/2026: From $224
    05

    Wed

  • SEA–PHX, 08/06/2026: From $267
    06

    Thu

  • SEA–PHX, 08/07/2026: From $247
    07

    Fri

  • SEA–PHX, 08/08/2026: From $234
    08

    Sat

  • SEA–PHX, 08/09/2026: From $289
    09

    Sun

  • SEA–PHX, 08/10/2026: From $247
    10

    Mon

  • SEA–PHX, 08/11/2026: From $224
    11

    Tue

  • SEA–PHX: cmp-view-offers-disclaimer. Find Offers
    12

    Wed

  • SEA–PHX, 08/13/2026: From $247
    13

    Thu

  • SEA–PHX, 08/14/2026: From $119
    14

    Fri

  • SEA–PHX, 08/15/2026: From $119
    15

    Sat

  • SEA–PHX, 08/16/2026: From $243
    16

    Sun

  • SEA–PHX: cmp-view-offers-disclaimer. Find Offers
    17

    Mon

  • SEA–PHX, 08/18/2026: From $134
    18

    Tue

  • SEA–PHX, 08/19/2026: From $119
    19

    Wed

  • SEA–PHX, 08/20/2026: From $119
    20

    Thu

  • SEA–PHX, 08/21/2026: From $99
    21

    Fri

  • SEA–PHX, 08/22/2026: From $99
    22

    Sat

  • SEA–PHX, 08/23/2026: From $144
    23

    Sun

  • SEA–PHX, 08/24/2026: From $104
    24

    Mon

  • SEA–PHX, 08/25/2026: From $109
    25

    Tue

  • SEA–PHX, 08/26/2026: From $99
    26

    Wed

  • SEA–PHX, 08/27/2026: From $99
    27

    Thu

  • SEA–PHX, 08/28/2026: From $99
    28

    Fri

  • SEA–PHX, 08/29/2026: From $99
    29

    Sat

  • SEA–PHX, 08/30/2026: From $144
    30

    Sun

  • SEA–PHX, 08/31/2026: From $129
    31

    Mon

    • Range$99-$289

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Sky Harbor International Airport
    Average flight time:
    2 hours 50 minutes
    Distance:
    1107 miles

    Route Information

    155† Weekly flights
    • 3‡ Nonstop flights per day Monday through Friday
    • 3‡ Nonstop flights on Saturday
    • 3‡ Nonstop flights on Sunday

    † 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

    The average flight time from Seattle/Tacoma to Phoenix is 2 hours 50 minutes.
    There are 155 weekly flights from Seattle/Tacoma to Phoenix on Southwest Airlines.
    Yes, Southwest flies nonstop from Seattle/Tacoma to Phoenix 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Seattle/Tacoma to Phoenix 3 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Seattle/Tacoma 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 Seattle/Tacoma 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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