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

Promo Code

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

$

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 11/03/2026

One-way

Basic

From
$140
Seen: 21 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/21/2026

One-way

Basic

From
$140
Seen: 1 hour ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 11/04/2026

One-way

Basic

From
$140
Seen: 17 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/28/2026

One-way

Basic

From
$140
Seen: 23 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/22/2026

One-way

Basic

From
$140
Seen: 34 minutes ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/12/2026

One-way

Basic

From
$145
Seen: 15 hrs ago

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

Aug 2026
From$250*
Seen: 10 hrs ago
One Way/Basic
Sep 2026
From$140*
Seen: 23 hrs ago
One Way/Basic
Oct 2026
From$145*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $140
cmp-daily-histogram-bars-legend-max-price-aria-label $315
Displaying fares for August-2026
  • SAT–DCA, 08/22/2026: From $274
    22

    Sat

    AUG

  • SAT–DCA: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • SAT–DCA, 08/24/2026: From $310
    24

    Mon

  • SAT–DCA, 08/25/2026: From $269
    25

    Tue

  • SAT–DCA, 08/26/2026: From $269
    26

    Wed

  • SAT–DCA, 08/27/2026: From $315
    27

    Thu

  • SAT–DCA, 08/28/2026: From $255
    28

    Fri

  • SAT–DCA, 08/29/2026: From $250
    29

    Sat

  • SAT–DCA, 08/30/2026: From $255
    30

    Sun

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

    Mon

  • SAT–DCA, 09/01/2026: From $250
    01

    Tue

    SEP

  • SAT–DCA, 09/02/2026: From $250
    02

    Wed

  • SAT–DCA, 09/03/2026: From $255
    03

    Thu

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

    Fri

  • SAT–DCA, 09/05/2026: From $194
    05

    Sat

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

    Sun

  • SAT–DCA, 09/07/2026: From $249
    07

    Mon

  • SAT–DCA, 09/08/2026: From $195
    08

    Tue

  • SAT–DCA, 09/09/2026: From $189
    09

    Wed

  • SAT–DCA, 09/10/2026: From $145
    10

    Thu

  • SAT–DCA, 09/11/2026: From $170
    11

    Fri

  • SAT–DCA, 09/12/2026: From $145
    12

    Sat

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

    Sun

  • SAT–DCA, 09/14/2026: From $145
    14

    Mon

  • SAT–DCA, 09/15/2026: From $145
    15

    Tue

  • SAT–DCA, 09/16/2026: From $145
    16

    Wed

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

    Thu

  • SAT–DCA, 09/18/2026: From $200
    18

    Fri

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

    Sat

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

    Sun

  • SAT–DCA, 09/21/2026: From $140
    21

    Mon

    • Range$140-$315

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

    Route Information

    151† 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 151 weekly flights from San Antonio to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly San Antonio to Washington, D.C. (Reagan National) with Southwest, check out our Low Fare Calendar.
    You can rent a car at Ronald Reagan National Airport book yours with your flight.
    Yes! Flights from San Antonio to Washington, D.C. (Reagan National)—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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