Southwest® flights from Philadelphia to San Antonio from $209

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Low fares from Philadelphia to San Antonio

$

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 11/14/2026

One-way

Basic

From
$209
Seen: 21 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 09/21/2026

One-way

Basic

From
$209
Seen: 9 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 09/24/2026

One-way

Basic

From
$209
Seen: 7 hrs ago

Philadelphia (PHL)to

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

One-way

Basic

From
$209
Seen: 6 minutes ago

Philadelphia (PHL)to

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

One-way

Basic

From
$209
Seen: 12 hrs ago

Philadelphia (PHL)to

San Antonio (SAT)
Depart: 09/14/2026

One-way

Basic

From
$209
Seen: 13 hrs ago

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Explore flights from Philadelphia to San Antonio

Aug 2026
From$308*
Seen: 17 hrs ago
One Way/Basic
Sep 2026
From$209*
Seen: 13 hrs ago
One Way/Basic
Oct 2026
From$283*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $209
cmp-daily-histogram-bars-legend-max-price-aria-label $365
Displaying fares for August-2026
  • PHL–SAT, 08/22/2026: From $308
    22

    Sat

    AUG

  • PHL–SAT, 08/23/2026: From $365
    23

    Sun

  • PHL–SAT, 08/24/2026: From $365
    24

    Mon

  • PHL–SAT, 08/25/2026: From $308
    25

    Tue

  • PHL–SAT, 08/26/2026: From $308
    26

    Wed

  • PHL–SAT, 08/27/2026: From $365
    27

    Thu

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

    Fri

  • PHL–SAT, 08/29/2026: From $308
    29

    Sat

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

    Sun

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

    Mon

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

    Tue

    SEP

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    03

    Thu

  • PHL–SAT, 09/04/2026: From $326
    04

    Fri

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

    Sat

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • PHL–SAT, 09/08/2026: From $308
    08

    Tue

  • PHL–SAT, 09/09/2026: From $226
    09

    Wed

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

    Thu

  • PHL–SAT, 09/11/2026: From $226
    11

    Fri

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

    Sat

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

    Sun

  • PHL–SAT, 09/14/2026: From $209
    14

    Mon

  • PHL–SAT, 09/15/2026: From $209
    15

    Tue

  • PHL–SAT, 09/16/2026: From $209
    16

    Wed

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

  • PHL–SAT: cmp-view-offers-disclaimer. Find Offers
    18

    Fri

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

    Sat

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

    Sun

  • PHL–SAT, 09/21/2026: From $209
    21

    Mon

    • Range$209-$365

    *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

    Route Information

    124† 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 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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