Southwest® flights from Portland, OR to San Antonio from $179

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Low fares from Portland, OR to San Antonio

$

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 11/23/2026

One-way

Basic

From
$179
Seen: 20 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 11/19/2026

One-way

Basic

From
$179
Seen: 16 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 11/02/2026

One-way

Basic

From
$179
Seen: 19 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 12/03/2026

One-way

Basic

From
$179
Seen: 15 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 10/28/2026

One-way

Basic

From
$179
Seen: 1 hour ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 12/08/2026

One-way

Basic

From
$179
Seen: 3 hrs ago

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Explore flights from Portland, OR to San Antonio

Oct 2026
From$179*
Seen: 1 hour ago
One Way/Basic
Nov 2026
From$179*
Seen: 16 hrs ago
One Way/Basic
Dec 2026
From$179*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $179
cmp-daily-histogram-bars-legend-max-price-aria-label $469
Displaying fares for October-2026
  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    03

    Sat

    OCT

  • PDX–SAT, 10/04/2026: From $469
    04

    Sun

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    05

    Mon

  • PDX–SAT, 10/06/2026: From $469
    06

    Tue

  • PDX–SAT, 10/07/2026: From $469
    07

    Wed

  • PDX–SAT, 10/08/2026: From $239
    08

    Thu

  • PDX–SAT, 10/09/2026: From $239
    09

    Fri

  • PDX–SAT, 10/10/2026: From $234
    10

    Sat

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • PDX–SAT, 10/12/2026: From $430
    12

    Mon

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    13

    Tue

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    14

    Wed

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    15

    Thu

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

  • PDX–SAT, 10/17/2026: From $234
    17

    Sat

  • PDX–SAT, 10/18/2026: From $340
    18

    Sun

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    19

    Mon

  • PDX–SAT, 10/20/2026: From $234
    20

    Tue

  • PDX–SAT, 10/21/2026: From $234
    21

    Wed

  • PDX–SAT, 10/22/2026: From $184
    22

    Thu

  • PDX–SAT, 10/23/2026: From $219
    23

    Fri

  • PDX–SAT, 10/24/2026: From $184
    24

    Sat

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • PDX–SAT, 10/26/2026: From $219
    26

    Mon

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    27

    Tue

  • PDX–SAT, 10/28/2026: From $179
    28

    Wed

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    29

    Thu

  • PDX–SAT, 10/30/2026: From $194
    30

    Fri

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • PDX–SAT, 11/01/2026: From $244
    01

    Sun

    NOV

  • PDX–SAT, 11/02/2026: From $179
    02

    Mon

    • Range$179-$469

    *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:
    Portland International Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    1714 miles

    Route Information

    139† 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 139 weekly flights from Portland, OR to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Portland, OR to San Antonio with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Antonio International Airport book yours with your flight.
    Yes! Flights from Portland, OR to San Antonio—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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