Southwest® flights from Washington D.C. Reagan National to San Antonio from $150

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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: 12/09/2026

One-way

Basic

From
$150
Seen: 18 hrs ago

Washington D.C. Reagan National (DCA)to

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

One-way

Basic

From
$150
Seen: 17 hrs ago

Washington D.C. Reagan National (DCA)to

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

One-way

Basic

From
$150
Seen: 23 hrs ago

Washington D.C. Reagan National (DCA)to

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

One-way

Basic

From
$155
Seen: 18 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 01/20/2027

One-way

Basic

From
$155
Seen: 3 hrs ago

Washington D.C. Reagan National (DCA)to

San Antonio (SAT)
Depart: 12/05/2026

One-way

Basic

From
$160
Seen: 15 hrs ago

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

Nov 2026
From$235*
Seen: 14 hrs ago
One Way/Basic
Dec 2026
From$150*
Seen: 18 hrs ago
One Way/Basic
Jan 2027
From$155*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $150
cmp-daily-histogram-bars-legend-max-price-aria-label $375
Displaying fares for November-2026
  • DCA–SAT, 11/11/2026: From $304
    11

    Wed

    NOV

  • DCA–SAT, 11/12/2026: From $345
    12

    Thu

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

    Fri

  • DCA–SAT, 11/14/2026: From $309
    14

    Sat

  • DCA–SAT, 11/15/2026: From $350
    15

    Sun

  • DCA–SAT, 11/16/2026: From $345
    16

    Mon

  • DCA–SAT, 11/17/2026: From $304
    17

    Tue

  • DCA–SAT, 11/18/2026: From $285
    18

    Wed

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

    Thu

  • DCA–SAT, 11/20/2026: From $290
    20

    Fri

  • DCA–SAT, 11/21/2026: From $285
    21

    Sat

  • DCA–SAT, 11/22/2026: From $285
    22

    Sun

  • DCA–SAT, 11/23/2026: From $290
    23

    Mon

  • DCA–SAT, 11/24/2026: From $290
    24

    Tue

  • DCA–SAT, 11/25/2026: From $280
    25

    Wed

  • DCA–SAT, 11/26/2026: From $280
    26

    Thu

  • DCA–SAT, 11/27/2026: From $280
    27

    Fri

  • DCA–SAT, 11/28/2026: From $375
    28

    Sat

  • DCA–SAT, 11/29/2026: From $375
    29

    Sun

  • DCA–SAT, 11/30/2026: From $235
    30

    Mon

  • DCA–SAT, 12/01/2026: From $235
    01

    Tue

    DEC

  • DCA–SAT, 12/02/2026: From $150
    02

    Wed

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

    Thu

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

    Fri

  • DCA–SAT, 12/05/2026: From $160
    05

    Sat

  • DCA–SAT, 12/06/2026: From $205
    06

    Sun

  • DCA–SAT, 12/07/2026: From $180
    07

    Mon

  • DCA–SAT, 12/08/2026: From $150
    08

    Tue

  • DCA–SAT, 12/09/2026: From $150
    09

    Wed

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

    Thu

    • Range$150-$375

    *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

    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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