Alaska Airlines Flights from Seattle to San Antonio

Lowest fares from Seattle to San Antonio

Aug 2026
From$239*
Seen: 21 hours ago
Flight Type One Way|Saver
Sep 2026
From$239*
Seen: 21 hours ago
Flight Type One Way|Saver
Oct 2026
From$239*
Seen: 21 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $239
cmp-daily-histogram-bars-legend-max-price-aria-label $499
Displaying fares for August-2026
  • SEA–SAT, Aug 9, 2026: From $499
    09

    Su

    AUG

  • SEA–SAT, Aug 10, 2026: From $380
    10

    Mo

  • SEA–SAT, Aug 11, 2026: From $499
    11

    Tu

  • SEA–SAT, Aug 12, 2026: From $499
    12

    We

  • SEA–SAT, Aug 13, 2026: From $499
    13

    Th

  • SEA–SAT, Aug 14, 2026: From $499
    14

    Fr

  • SEA–SAT, Aug 15, 2026: From $434
    15

    Sa

  • SEA–SAT, Aug 16, 2026: From $434
    16

    Su

  • SEA–SAT, Aug 17, 2026: From $434
    17

    Mo

  • SEA–SAT, Aug 18, 2026: From $434
    18

    Tu

  • SEA–SAT, Aug 19, 2026: From $434
    19

    We

  • SEA–SAT, Aug 20, 2026: From $434
    20

    Th

  • SEA–SAT, Aug 21, 2026: From $434
    21

    Fr

  • SEA–SAT, Aug 22, 2026: From $324
    22

    Sa

  • SEA–SAT, Aug 23, 2026: From $335
    23

    Su

  • SEA–SAT, Aug 24, 2026: From $384
    24

    Mo

  • SEA–SAT, Aug 25, 2026: From $324
    25

    Tu

  • SEA–SAT, Aug 26, 2026: From $324
    26

    We

  • SEA–SAT, Aug 27, 2026: From $324
    27

    Th

  • SEA–SAT, Aug 28, 2026: From $239
    28

    Fr

  • SEA–SAT, Aug 29, 2026: From $239
    29

    Sa

  • SEA–SAT, Aug 30, 2026: From $374
    30

    Su

  • SEA–SAT, Aug 31, 2026: From $312
    31

    Mo

  • SEA–SAT, Sep 1, 2026: From $239
    01

    Tu

    SEP

  • SEA–SAT, Sep 2, 2026: From $239
    02

    We

  • SEA–SAT, Sep 3, 2026: From $274
    03

    Th

  • SEA–SAT, Sep 4, 2026: From $239
    04

    Fr

  • SEA–SAT, Sep 5, 2026: From $239
    05

    Sa

  • SEA–SAT, Sep 6, 2026: From $239
    06

    Su

  • SEA–SAT, Sep 7, 2026: From $434
    07

    Mo

  • SEA–SAT, Sep 8, 2026: From $334
    08

    Tu

    • Range$239-$499

    *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 Seattle to San Antonio.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to San Antonio.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 14, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 17, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 18, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 20, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 21, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Nov 23, 2026

    From

    $239

    Seen: 21 hours ago

    Seattle (SEA)San Antonio (SAT)One-way
    |
    Saver    		Depart: Dec 4, 2026

    From

    $239

    Seen: 21 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.

    Explore Alaska Airlines's Flights to Top-Pick Destinations