Flights from Seattle (SEA) to San Diego (SAN) on Alaska Airlines

Lowest fares from Seattle to San Diego

Sep 2026
From$244*
Seen: 14 hours ago
Flight Type One Way|Saver
Oct 2026
From$139*
Seen: 14 hours ago
Flight Type One Way|Saver
Nov 2026
From$139*
Seen: 14 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $549
Displaying fares for September-2026
  • SEA–SAN, Sep 14, 2026: From $549
    14

    Mo

    SEP

  • SEA–SAN, Sep 15, 2026: From $344
    15

    Tu

  • SEA–SAN, Sep 16, 2026: From $344
    16

    We

  • SEA–SAN, Sep 17, 2026: From $334
    17

    Th

  • SEA–SAN, Sep 18, 2026: From $344
    18

    Fr

  • SEA–SAN, Sep 19, 2026: From $344
    19

    Sa

  • SEA–SAN, Sep 20, 2026: From $319
    20

    Su

  • SEA–SAN, Sep 21, 2026: From $319
    21

    Mo

  • SEA–SAN, Sep 22, 2026: From $319
    22

    Tu

  • SEA–SAN, Sep 23, 2026: From $319
    23

    We

  • SEA–SAN, Sep 24, 2026: From $319
    24

    Th

  • SEA–SAN, Sep 25, 2026: From $319
    25

    Fr

  • SEA–SAN, Sep 26, 2026: From $319
    26

    Sa

  • SEA–SAN, Sep 27, 2026: From $319
    27

    Su

  • SEA–SAN, Sep 28, 2026: From $244
    28

    Mo

  • SEA–SAN, Sep 29, 2026: From $244
    29

    Tu

  • SEA–SAN, Sep 30, 2026: From $244
    30

    We

  • SEA–SAN, Oct 1, 2026: From $285
    01

    Th

    OCT

  • SEA–SAN, Oct 2, 2026: From $244
    02

    Fr

  • SEA–SAN, Oct 3, 2026: From $244
    03

    Sa

  • SEA–SAN, Oct 4, 2026: From $189
    04

    Su

  • SEA–SAN, Oct 5, 2026: From $189
    05

    Mo

  • SEA–SAN, Oct 6, 2026: From $152
    06

    Tu

  • SEA–SAN, Oct 7, 2026: From $152
    07

    We

  • SEA–SAN, Oct 8, 2026: From $199
    08

    Th

  • SEA–SAN, Oct 9, 2026: From $189
    09

    Fr

  • SEA–SAN, Oct 10, 2026: From $187
    10

    Sa

  • SEA–SAN, Oct 11, 2026: From $189
    11

    Su

  • SEA–SAN, Oct 12, 2026: From $189
    12

    Mo

  • SEA–SAN, Oct 13, 2026: From $139
    13

    Tu

    • Range$139-$549

    *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 Diego.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to San Diego.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Jan 12, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Jan 9, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Jan 20, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Jan 30, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Feb 3, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Feb 20, 2027

    From

    $139

    Seen: 14 hours ago

    Seattle (SEA)San Diego (SAN)One-way
    |
    Saver    		Depart: Mar 2, 2027

    From

    $139

    Seen: 14 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.

    Frequently Asked Questions on flights from Seattle (SEA) to San Diego (SAN)

    When is the best time to book a flight from Seattle to San Diego?

    Want to find the lowest fares by day and time flying from Seattle to San Diego on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.Frequently Asked Questions on flights from Seattle (SEA) to San Diego (SAN)

    Can I earn points on my flight to San Diego?

    Yes, with Atmosâ„¢ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmosâ„¢ Rewards member yet? Learn more and join today.

    Can I rent a car when I arrive at San Diego International Airport?

    Yes, you can rent a car at San Diego International Airport. Check availability and book now

    Where can I find the status of my flight to San Diego

    You can check the status of your upcoming Alaska Airlines on our flight schedule page.

    Where can I find answers to questions about flying with Alaska Airlines?

    Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

    Can I change or cancel my Alaska Airlines flight to San Diego?

    Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here. 

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