Southwest® flights from Washington D.C. Reagan National to San Antonio from $140

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Low fares from Washington D.C. Reagan National to San Antonio

$

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 11/10/2026

One-way

Basic

From
$140
Seen: 15 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 11/05/2026

One-way

Basic

From
$145
Seen: 23 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 12/23/2026

One-way

Basic

From
$145
Seen: 13 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 12/21/2026

One-way

Basic

From
$145
Seen: 19 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 12/24/2026

One-way

Basic

From
$145
Seen: 18 hrs ago

Washington D.C. Reagan National (DCA)to

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

One-way

Basic

From
$185
Seen: 7 hrs ago

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Explore flights from Washington D.C. Reagan National to San Antonio

Oct 2026
From$185*
Seen: 15 hrs ago
One Way/Basic
Nov 2026
From$140*
Seen: 15 hrs ago
One Way/Basic
Dec 2026
From$145*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $185
cmp-daily-histogram-bars-legend-max-price-aria-label $335
Displaying fares for October-2026
  • DCA–SAT, 10/03/2026: From $294
    03

    Sat

    OCT

  • DCA–SAT, 10/04/2026: From $335
    04

    Sun

  • DCA–SAT, 10/05/2026: From $330
    05

    Mon

  • DCA–SAT, 10/06/2026: From $289
    06

    Tue

  • DCA–SAT, 10/07/2026: From $289
    07

    Wed

  • DCA–SAT, 10/08/2026: From $330
    08

    Thu

  • DCA–SAT, 10/09/2026: From $275
    09

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • DCA–SAT, 10/14/2026: From $270
    14

    Wed

  • DCA–SAT, 10/15/2026: From $275
    15

    Thu

  • DCA–SAT, 10/16/2026: From $220
    16

    Fri

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

    Sat

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

    Sun

  • DCA–SAT, 10/19/2026: From $220
    19

    Mon

  • DCA–SAT, 10/20/2026: From $215
    20

    Tue

  • DCA–SAT: cmp-view-offers-disclaimer. Find Offers
    21

    Wed

  • DCA–SAT, 10/22/2026: From $220
    22

    Thu

  • DCA–SAT, 10/23/2026: From $190
    23

    Fri

  • DCA–SAT, 10/24/2026: From $195
    24

    Sat

  • DCA–SAT, 10/25/2026: From $275
    25

    Sun

  • DCA–SAT, 10/26/2026: From $190
    26

    Mon

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

    Tue

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

    Wed

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

    Thu

  • DCA–SAT, 10/30/2026: From $185
    30

    Fri

  • DCA–SAT, 10/31/2026: From $190
    31

    Sat

  • DCA–SAT, 11/01/2026: From $190
    01

    Sun

    NOV

  • DCA–SAT, 11/02/2026: From $190
    02

    Mon

    • Range$185-$335

    *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:
    Ronald Reagan National Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    1380 miles

    Route Information

    152† 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 152 weekly flights from Washington, D.C. (Reagan National) to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) 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 Washington, D.C. (Reagan National) 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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