Southwest® flights from Portland, OR to San Antonio from $144

Promo Code

Low fares from Portland, OR to San Antonio

$

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 11/18/2026

One-way

Basic

From
$144
Seen: 9 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 11/17/2026

One-way

Basic

From
$144
Seen: 1 hour ago

Portland, OR (PDX)to

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

One-way

Basic

From
$144
Seen: 15 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 12/16/2026

One-way

Basic

From
$144
Seen: 15 hrs ago

Portland, OR (PDX)to

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

One-way

Basic

From
$144
Seen: 10 hrs ago

Portland, OR (PDX)to

San Antonio (SAT)
Depart: 12/02/2026

One-way

Basic

From
$144
Seen: 10 hrs ago

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Explore flights from Portland, OR to San Antonio

Oct 2026
From$244*
Seen: 18 hrs ago
One Way/Basic
Nov 2026
From$144*
Seen: 9 hrs ago
One Way/Basic
Dec 2026
From$144*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $144
cmp-daily-histogram-bars-legend-max-price-aria-label $479
Displaying fares for October-2026
  • PDX–SAT, 10/23/2026: From $479
    23

    Fri

    OCT

  • PDX–SAT, 10/24/2026: From $479
    24

    Sat

  • PDX–SAT, 10/25/2026: From $479
    25

    Sun

  • PDX–SAT, 10/26/2026: From $479
    26

    Mon

  • PDX–SAT, 10/27/2026: From $479
    27

    Tue

  • PDX–SAT, 10/28/2026: From $244
    28

    Wed

  • PDX–SAT, 10/29/2026: From $244
    29

    Thu

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

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

    Sat

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    01

    Sun

    NOV

  • PDX–SAT, 11/02/2026: From $244
    02

    Mon

  • PDX–SAT, 11/03/2026: From $244
    03

    Tue

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    05

    Thu

  • PDX–SAT, 11/06/2026: From $280
    06

    Fri

  • PDX–SAT, 11/07/2026: From $244
    07

    Sat

  • PDX–SAT, 11/08/2026: From $244
    08

    Sun

  • PDX–SAT, 11/09/2026: From $149
    09

    Mon

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

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

    Wed

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

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

    Fri

  • PDX–SAT, 11/14/2026: From $149
    14

    Sat

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

    Sun

  • PDX–SAT, 11/16/2026: From $244
    16

    Mon

  • PDX–SAT, 11/17/2026: From $144
    17

    Tue

  • PDX–SAT, 11/18/2026: From $144
    18

    Wed

  • PDX–SAT, 11/19/2026: From $167
    19

    Thu

  • PDX–SAT: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

  • PDX–SAT, 11/21/2026: From $244
    21

    Sat

  • PDX–SAT, 11/22/2026: From $244
    22

    Sun

    • Range$144-$479

    *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

    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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