Southwest® flights from San Diego to Seattle/Tacoma from $99

Promo Code

Low fares from San Diego to Seattle/Tacoma

$

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 11/07/2026

One-way

Basic

From
$99
Seen: 23 hrs ago

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 10/14/2026

One-way

Basic

From
$99
Seen: 21 hrs ago

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 12/08/2026

One-way

Basic

From
$99
Seen: 15 hrs ago

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 12/05/2026

One-way

Basic

From
$99
Seen: 15 hrs ago

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 11/10/2026

One-way

Basic

From
$99
Seen: 7 hrs ago

San Diego (SAN)to

Seattle/Tacoma (SEA)
Depart: 10/27/2026

One-way

Basic

From
$99
Seen: 6 hrs ago

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Explore flights from San Diego to Seattle/Tacoma

Sep 2026
From$214*
Seen: 23 hrs ago
One Way/Basic
Oct 2026
From$99*
Seen: 23 hrs ago
One Way/Basic
Nov 2026
From$99*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $148
cmp-daily-histogram-bars-legend-max-price-aria-label $349
Displaying fares for September-2026
  • SAN–SEA, 09/12/2026: From $304
    12

    Sat

    SEP

  • SAN–SEA, 09/13/2026: From $304
    13

    Sun

  • SAN–SEA, 09/14/2026: From $304
    14

    Mon

  • SAN–SEA, 09/15/2026: From $304
    15

    Tue

  • SAN–SEA, 09/16/2026: From $304
    16

    Wed

  • SAN–SEA, 09/17/2026: From $349
    17

    Thu

  • SAN–SEA, 09/18/2026: From $294
    18

    Fri

  • SAN–SEA, 09/19/2026: From $289
    19

    Sat

  • SAN–SEA, 09/20/2026: From $294
    20

    Sun

  • SAN–SEA, 09/21/2026: From $289
    21

    Mon

  • SAN–SEA, 09/22/2026: From $289
    22

    Tue

  • SAN–SEA, 09/23/2026: From $289
    23

    Wed

  • SAN–SEA, 09/24/2026: From $289
    24

    Thu

  • SAN–SEA, 09/25/2026: From $214
    25

    Fri

  • SAN–SEA, 09/26/2026: From $214
    26

    Sat

  • SAN–SEA, 09/27/2026: From $214
    27

    Sun

  • SAN–SEA, 09/28/2026: From $219
    28

    Mon

  • SAN–SEA, 09/29/2026: From $214
    29

    Tue

  • SAN–SEA, 09/30/2026: From $214
    30

    Wed

  • SAN–SEA, 10/01/2026: From $214
    01

    Thu

    OCT

  • SAN–SEA, 10/02/2026: From $148
    02

    Fri

  • SAN–SEA: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

  • SAN–SEA: cmp-view-offers-disclaimer. Find Offers
    04

    Sun

  • SAN–SEA, 10/05/2026: From $148
    05

    Mon

  • SAN–SEA: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

  • SAN–SEA, 10/07/2026: From $148
    07

    Wed

  • SAN–SEA, 10/08/2026: From $148
    08

    Thu

  • SAN–SEA, 10/09/2026: From $148
    09

    Fri

  • SAN–SEA, 10/10/2026: From $148
    10

    Sat

  • SAN–SEA, 10/11/2026: From $190
    11

    Sun

    • Range$148-$349

    *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:
    San Diego International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Distance:
    1050 miles

    Route Information

    152† 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 152 weekly flights from San Diego to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly San Diego to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from San Diego to Seattle/Tacoma—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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