Southwest® flights from San Francisco to Seattle/Tacoma from $89

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Low fares from San Francisco to Seattle/Tacoma

$

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 09/11/2026

One-way

Basic

From
$89
Seen: 12 hrs ago

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 09/05/2026

One-way

Basic

From
$89
Seen: 15 hrs ago

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 10/31/2026

One-way

Basic

From
$89
Seen: 5 hrs ago

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 09/17/2026

One-way

Basic

From
$94
Seen: 19 hrs ago

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 09/10/2026

One-way

Basic

From
$94
Seen: 21 hrs ago

San Francisco (SFO)to

Seattle/Tacoma (SEA)
Depart: 10/26/2026

One-way

Basic

From
$94
Seen: 9 hrs ago

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Explore flights from San Francisco to Seattle/Tacoma

Aug 2026
From$94*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$89*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$89*
Seen: 5 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $94
cmp-daily-histogram-bars-legend-max-price-aria-label $369
Displaying fares for August-2026
  • SFO–SEA, 08/01/2026: From $369
    01

    Sat

    AUG

  • SFO–SEA, 08/02/2026: From $369
    02

    Sun

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    03

    Mon

  • SFO–SEA, 08/04/2026: From $369
    04

    Tue

  • SFO–SEA, 08/05/2026: From $369
    05

    Wed

  • SFO–SEA, 08/06/2026: From $369
    06

    Thu

  • SFO–SEA, 08/07/2026: From $287
    07

    Fri

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    08

    Sat

  • SFO–SEA, 08/09/2026: From $287
    09

    Sun

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    10

    Mon

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

    Tue

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    12

    Wed

  • SFO–SEA, 08/13/2026: From $287
    13

    Thu

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    14

    Fri

  • SFO–SEA, 08/15/2026: From $217
    15

    Sat

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    16

    Sun

  • SFO–SEA, 08/17/2026: From $217
    17

    Mon

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    18

    Tue

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    19

    Wed

  • SFO–SEA, 08/20/2026: From $217
    20

    Thu

  • SFO–SEA, 08/21/2026: From $134
    21

    Fri

  • SFO–SEA, 08/22/2026: From $157
    22

    Sat

  • SFO–SEA, 08/23/2026: From $159
    23

    Sun

  • SFO–SEA, 08/24/2026: From $111
    24

    Mon

  • SFO–SEA, 08/25/2026: From $106
    25

    Tue

  • SFO–SEA, 08/26/2026: From $106
    26

    Wed

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    27

    Thu

  • SFO–SEA, 08/28/2026: From $134
    28

    Fri

  • SFO–SEA, 08/29/2026: From $106
    29

    Sat

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    30

    Sun

  • SFO–SEA, 08/31/2026: From $94
    31

    Mon

    • Range$94-$369

    *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 Francisco International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Distance:
    679 miles

    Route Information

    80† 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 80 weekly flights from San Francisco to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly San Francisco 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 Francisco 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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