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: 09/11/2026

One-way

Basic

From
$140
Seen: 9 minutes ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/06/2026

One-way

Basic

From
$145
Seen: 8 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/02/2026

One-way

Basic

From
$165
Seen: 18 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/30/2026

One-way

Basic

From
$165
Seen: 8 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 08/31/2026

One-way

Basic

From
$165
Seen: 4 hrs ago

San Antonio (SAT)to

Washington, D.C. (Reagan National) (DCA)
Depart: 09/10/2026

One-way

Basic

From
$165
Seen: 22 hrs ago

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

Aug 2026
From$165*
Seen: 4 hrs ago
One Way/Basic
Sep 2026
From$140*
Seen: 9 minutes ago
One Way/Basic
Oct 2026
From$165*
Seen: 14 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $165
cmp-daily-histogram-bars-legend-max-price-aria-label $315
Displaying fares for August-2026
  • SAT–DCA, 08/03/2026: From $315
    03

    Mon

    AUG

  • SAT–DCA, 08/04/2026: From $269
    04

    Tue

  • SAT–DCA, 08/05/2026: From $269
    05

    Wed

  • SAT–DCA, 08/06/2026: From $315
    06

    Thu

  • SAT–DCA, 08/07/2026: From $315
    07

    Fri

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

    Sat

  • SAT–DCA, 08/09/2026: From $304
    09

    Sun

  • SAT–DCA, 08/10/2026: From $250
    10

    Mon

  • SAT–DCA, 08/11/2026: From $250
    11

    Tue

  • SAT–DCA, 08/12/2026: From $250
    12

    Wed

  • SAT–DCA, 08/13/2026: From $255
    13

    Thu

  • SAT–DCA, 08/14/2026: From $255
    14

    Fri

  • SAT–DCA, 08/15/2026: From $255
    15

    Sat

  • SAT–DCA, 08/16/2026: From $260
    16

    Sun

  • SAT–DCA, 08/17/2026: From $200
    17

    Mon

  • SAT–DCA, 08/18/2026: From $195
    18

    Tue

  • SAT–DCA, 08/19/2026: From $195
    19

    Wed

  • SAT–DCA, 08/20/2026: From $200
    20

    Thu

  • SAT–DCA, 08/21/2026: From $200
    21

    Fri

  • SAT–DCA, 08/22/2026: From $170
    22

    Sat

  • SAT–DCA, 08/23/2026: From $255
    23

    Sun

  • SAT–DCA, 08/24/2026: From $165
    24

    Mon

  • SAT–DCA, 08/25/2026: From $165
    25

    Tue

  • SAT–DCA: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • SAT–DCA, 08/27/2026: From $170
    27

    Thu

  • SAT–DCA, 08/28/2026: From $170
    28

    Fri

  • SAT–DCA, 08/29/2026: From $170
    29

    Sat

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

    Sun

  • SAT–DCA, 08/31/2026: From $165
    31

    Mon

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

    Tue

    SEP

  • SAT–DCA, 09/02/2026: From $165
    02

    Wed

    • Range$165-$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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