Southwest® flights from Philadelphia to San Antonio from $141

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Low fares from Philadelphia to San Antonio

$

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 01/04/2027

One-way

Basic

From
$141
Seen: 11 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 12/09/2026

One-way

Basic

From
$164
Seen: 18 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 12/19/2026

One-way

Basic

From
$164
Seen: 19 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 11/21/2026

One-way

Basic

From
$164
Seen: 17 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 01/05/2027

One-way

Basic

From
$164
Seen: 15 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 01/04/2027

One-way

Choice

From
$190
Seen: 11 hrs ago

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Explore flights from Philadelphia to San Antonio

Oct 2026
From$317*
Seen: 11 hrs ago
One Way/Basic
Nov 2026
From$164*
Seen: 17 hrs ago
One Way/Basic
Dec 2026
From$164*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $164
cmp-daily-histogram-bars-legend-max-price-aria-label $395
Displaying fares for October-2026
  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    23

    Fri

    OCT

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    24

    Sat

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

    Sun

  • PHL–SAT, 10/26/2026: From $395
    26

    Mon

  • PHL–SAT, 10/27/2026: From $317
    27

    Tue

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    28

    Wed

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

    Thu

  • PHL–SAT, 10/30/2026: From $395
    30

    Fri

  • PHL–SAT, 10/31/2026: From $317
    31

    Sat

  • PHL–SAT, 11/01/2026: From $395
    01

    Sun

    NOV

  • PHL–SAT, 11/02/2026: From $395
    02

    Mon

  • PHL–SAT, 11/03/2026: From $317
    03

    Tue

  • PHL–SAT, 11/04/2026: From $317
    04

    Wed

  • PHL–SAT, 11/05/2026: From $309
    05

    Thu

  • PHL–SAT, 11/06/2026: From $356
    06

    Fri

  • PHL–SAT, 11/07/2026: From $317
    07

    Sat

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • PHL–SAT, 11/09/2026: From $191
    09

    Mon

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

    Tue

  • PHL–SAT, 11/11/2026: From $191
    11

    Wed

  • PHL–SAT, 11/12/2026: From $191
    12

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

  • PHL–SAT, 11/17/2026: From $191
    17

    Tue

  • PHL–SAT, 11/18/2026: From $191
    18

    Wed

  • PHL–SAT, 11/19/2026: From $191
    19

    Thu

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

    Fri

  • PHL–SAT, 11/21/2026: From $164
    21

    Sat

  • PHL–SAT, 11/22/2026: From $191
    22

    Sun

    • Range$164-$395

    *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:
    Philadelphia International Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    1496 miles

    Questions we hear the most

    There are 124 weekly flights from Philadelphia to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Philadelphia 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 Philadelphia 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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