Southwest® flights from Seattle/Tacoma to Phoenix from $129

Promo Code

Low fares from Seattle/Tacoma to Phoenix

$

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 12/12/2026

One-way

Basic

From
$129
Seen: 11 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 11/14/2026

One-way

Basic

From
$129
Seen: 11 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 12/09/2026

One-way

Basic

From
$129
Seen: 14 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 11/11/2026

One-way

Basic

From
$129
Seen: 14 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 12/05/2026

One-way

Basic

From
$129
Seen: 6 hrs ago

Seattle/Tacoma (SEA)to

Phoenix (PHX)
Depart: 11/18/2026

One-way

Basic

From
$129
Seen: 1 hour ago

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Explore flights from Seattle/Tacoma to Phoenix

Oct 2026
From$129*
Seen: 18 hrs ago
One Way/Basic
Nov 2026
From$129*
Seen: 14 hrs ago
One Way/Basic
Dec 2026
From$129*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $129
cmp-daily-histogram-bars-legend-max-price-aria-label $277
Displaying fares for October-2026
  • SEA–PHX, 10/01/2026: From $267
    01

    Thu

    OCT

  • SEA–PHX, 10/02/2026: From $267
    02

    Fri

  • SEA–PHX, 10/03/2026: From $244
    03

    Sat

  • SEA–PHX, 10/04/2026: From $267
    04

    Sun

  • SEA–PHX, 10/05/2026: From $267
    05

    Mon

  • SEA–PHX, 10/06/2026: From $244
    06

    Tue

  • SEA–PHX, 10/07/2026: From $244
    07

    Wed

  • SEA–PHX, 10/08/2026: From $267
    08

    Thu

  • SEA–PHX, 10/09/2026: From $277
    09

    Fri

  • SEA–PHX, 10/10/2026: From $244
    10

    Sat

  • SEA–PHX: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • SEA–PHX, 10/12/2026: From $277
    12

    Mon

  • SEA–PHX, 10/13/2026: From $244
    13

    Tue

  • SEA–PHX, 10/14/2026: From $189
    14

    Wed

  • SEA–PHX, 10/15/2026: From $229
    15

    Thu

  • SEA–PHX, 10/16/2026: From $219
    16

    Fri

  • SEA–PHX, 10/17/2026: From $189
    17

    Sat

  • SEA–PHX, 10/18/2026: From $233
    18

    Sun

  • SEA–PHX, 10/19/2026: From $219
    19

    Mon

  • SEA–PHX, 10/20/2026: From $189
    20

    Tue

  • SEA–PHX, 10/21/2026: From $159
    21

    Wed

  • SEA–PHX, 10/22/2026: From $159
    22

    Thu

  • SEA–PHX, 10/23/2026: From $164
    23

    Fri

  • SEA–PHX, 10/24/2026: From $159
    24

    Sat

  • SEA–PHX, 10/25/2026: From $164
    25

    Sun

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

    Mon

  • SEA–PHX, 10/27/2026: From $159
    27

    Tue

  • SEA–PHX, 10/28/2026: From $159
    28

    Wed

  • SEA–PHX, 10/29/2026: From $159
    29

    Thu

  • SEA–PHX: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • SEA–PHX, 10/31/2026: From $129
    31

    Sat

    • Range$129-$277

    *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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