Southwest® flights from Washington D.C. Reagan National to San Diego from $136

Promo Code

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

$

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 12/15/2026

One-way

Basic

From
$136
Seen: 2 hrs ago

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 01/06/2027

One-way

Basic

From
$164
Seen: 5 hrs ago

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 11/07/2026

One-way

Basic

From
$169
Seen: 15 hrs ago

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 12/05/2026

One-way

Basic

From
$169
Seen: 50 minutes ago

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 10/31/2026

One-way

Basic

From
$169
Seen: 5 hrs ago

Washington D.C. Reagan National (DCA)to

San Diego (SAN)
Depart: 11/11/2026

One-way

Basic

From
$169
Seen: 7 hrs ago

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

Try alternate month or interact with individual days below in order to find offers.
Sep 2026
No result for this month.
Oct 2026
From$169*
Seen: 5 hrs ago
One Way/Basic
Nov 2026
From$169*
Seen: 7 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $189
cmp-daily-histogram-bars-legend-max-price-aria-label $569
Displaying fares for September-2026
  • DCA–SAN: cmp-view-offers-disclaimer. Find Offers
    30

    Wed

    SEP

  • DCA–SAN, 10/01/2026: From $569
    01

    Thu

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

    Fri

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

    Sat

  • DCA–SAN, 10/04/2026: From $544
    04

    Sun

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

    Mon

  • DCA–SAN, 10/06/2026: From $399
    06

    Tue

  • DCA–SAN, 10/07/2026: From $419
    07

    Wed

  • DCA–SAN, 10/08/2026: From $494
    08

    Thu

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

    Fri

  • DCA–SAN, 10/10/2026: From $404
    10

    Sat

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

    Sun

  • DCA–SAN, 10/12/2026: From $424
    12

    Mon

  • DCA–SAN, 10/13/2026: From $304
    13

    Tue

  • DCA–SAN, 10/14/2026: From $309
    14

    Wed

  • DCA–SAN, 10/15/2026: From $309
    15

    Thu

  • DCA–SAN, 10/16/2026: From $372
    16

    Fri

  • DCA–SAN, 10/17/2026: From $309
    17

    Sat

  • DCA–SAN, 10/18/2026: From $449
    18

    Sun

  • DCA–SAN, 10/19/2026: From $309
    19

    Mon

  • DCA–SAN, 10/20/2026: From $219
    20

    Tue

  • DCA–SAN, 10/21/2026: From $219
    21

    Wed

  • DCA–SAN, 10/22/2026: From $279
    22

    Thu

  • DCA–SAN, 10/23/2026: From $324
    23

    Fri

  • DCA–SAN, 10/24/2026: From $224
    24

    Sat

  • DCA–SAN, 10/25/2026: From $324
    25

    Sun

  • DCA–SAN, 10/26/2026: From $259
    26

    Mon

  • DCA–SAN, 10/27/2026: From $214
    27

    Tue

  • DCA–SAN, 10/28/2026: From $219
    28

    Wed

  • DCA–SAN, 10/29/2026: From $189
    29

    Thu

    • Range$189-$569

    *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 Diego International Airport
    Distance:
    2276 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 Washington, D.C. (Reagan National) to San Diego on Southwest Airlines.
    To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) to San Diego with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Diego International Airport book yours with your flight.
    Yes! Flights from Washington, D.C. (Reagan National) to San Diego—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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