Southwest® flights from San Diego to Washington D.C. Reagan National from $164

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

$

San Diego (SAN)to

Washington D.C. Reagan National (DCA)
Depart: 12/15/2026

One-way

Basic

From
$164
Seen: 18 hrs ago

San Diego (SAN)to

Washington D.C. Reagan National (DCA)
Depart: 12/02/2026

One-way

Basic

From
$164
Seen: 22 hrs ago

San Diego (SAN)to

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

One-way

Basic

From
$169
Seen: 18 hrs ago

San Diego (SAN)to

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

One-way

Basic

From
$169
Seen: 13 hrs ago

San Diego (SAN)to

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

One-way

Basic

From
$169
Seen: 18 hrs ago

San Diego (SAN)to

Washington D.C. Reagan National (DCA)
Depart: 10/27/2026

One-way

Basic

From
$169
Seen: 1 hour ago

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

Sep 2026
From$219*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$169*
Seen: 13 hrs ago
One Way/Basic
Nov 2026
From$169*
Seen: 18 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $219
cmp-daily-histogram-bars-legend-max-price-aria-label $494
Displaying fares for September-2026
  • SAN–DCA, 09/10/2026: From $494
    10

    Thu

    SEP

  • SAN–DCA, 09/11/2026: From $494
    11

    Fri

  • SAN–DCA, 09/12/2026: From $494
    12

    Sat

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

    Sun

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • SAN–DCA, 09/17/2026: From $424
    17

    Thu

  • SAN–DCA, 09/18/2026: From $394
    18

    Fri

  • SAN–DCA, 09/19/2026: From $394
    19

    Sat

  • SAN–DCA, 09/20/2026: From $394
    20

    Sun

  • SAN–DCA, 09/21/2026: From $394
    21

    Mon

  • SAN–DCA, 09/22/2026: From $394
    22

    Tue

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

    Wed

  • SAN–DCA, 09/24/2026: From $299
    24

    Thu

  • SAN–DCA, 09/25/2026: From $299
    25

    Fri

  • SAN–DCA, 09/26/2026: From $299
    26

    Sat

  • SAN–DCA, 09/27/2026: From $319
    27

    Sun

  • SAN–DCA, 09/28/2026: From $299
    28

    Mon

  • SAN–DCA, 09/29/2026: From $299
    29

    Tue

  • SAN–DCA, 09/30/2026: From $219
    30

    Wed

  • SAN–DCA, 10/01/2026: From $219
    01

    Thu

    OCT

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    02

    Fri

  • SAN–DCA, 10/03/2026: From $219
    03

    Sat

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

    Sun

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    05

    Mon

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

    Tue

  • SAN–DCA, 10/07/2026: From $219
    07

    Wed

  • SAN–DCA, 10/08/2026: From $282
    08

    Thu

  • SAN–DCA: cmp-view-offers-disclaimer. Find Offers
    09

    Fri

    • Range$219-$494

    *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 Diego International Airport
    Arriving at:
    Ronald Reagan National Airport
    Distance:
    2276 miles

    Route Information

    154† 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 154 weekly flights from San Diego to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly San Diego 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 Diego 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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