Alaska Airlines Flights from San Antonio to Seattle

Flexpay logo

Book now. Pay later.

Spread the cost of your flight over low monthly payments.

Learn more

Lowest fares from San Antonio to Seattle

Jun 2025
From$344*
Seen: 2 hours ago
Flight Type One Way|Saver
$159
$419
Displaying fares for June-2025
  • 28

    Sa

    JUN

  • 29

    Su

  • 30

    Mo

  • 01

    Tu

    JUL

  • 02

    We

  • 03

    Th

  • 04

    Fr

  • 05

    Sa

  • 06

    Su

  • 07

    Mo

  • 08

    Tu

  • 09

    We

  • 10

    Th

  • 11

    Fr

  • 12

    Sa

  • 13

    Su

  • 14

    Mo

  • 15

    Tu

  • 16

    We

  • 17

    Th

  • 18

    Fr

  • 19

    Sa

  • 20

    Su

  • 21

    Mo

  • 22

    Tu

  • 23

    We

  • 24

    Th

  • 25

    Fr

  • 26

    Sa

  • 27

    Su

    • Range$159-$419

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights San Antonio to Seattle.*

    keyboard_arrow_down
    sort
    keyboard_arrow_down
    One-way low-fare flights San Antonio to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Aug 14, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 7, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 11, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 16, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Sep 26, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 1, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 9, 2025

    From

    $139

    Seen: 22 hours ago

    San Antonio (SAT)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 17, 2025

    From

    $139

    Seen: 22 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    Looking for more? See other routes

    Explore Alaska Airlines's Flights to Top-Pick Destinations