Southwest® flights from Seattle/Tacoma to Washington D.C. Reagan National from $204

Promo Code

Low fares from Seattle/Tacoma to Washington D.C. Reagan National

$

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 01/13/2027

One-way

Basic

From
$204
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 01/13/2027

One-way

Choice

From
$259
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 12/21/2026

One-way

Basic

From
$279
Seen: 21 hrs ago

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 11/30/2026

One-way

Basic

From
$299
Seen: 18 hrs ago

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 12/23/2026

One-way

Basic

From
$314
Seen: 10 hrs ago

Seattle/Tacoma (SEA)to

Washington D.C. Reagan National (DCA)
Depart: 12/21/2026

One-way

Choice

From
$334
Seen: 21 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Seattle/Tacoma to Washington D.C. Reagan National

Nov 2026
From$299*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$279*
Seen: 21 hrs ago
One Way/Basic
Jan 2027
From$204*
Seen: 15 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $299
Displaying fares for November-2026
  • SEA–DCA, 11/08/2026: From $589
    08

    Sun

    NOV

  • SEA–DCA, 11/09/2026: From $589
    09

    Mon

  • SEA–DCA, 11/10/2026: From $589
    10

    Tue

  • SEA–DCA, 11/11/2026: From $589
    11

    Wed

  • SEA–DCA, 11/12/2026: From $589
    12

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

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

    Thu

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

    Fri

  • SEA–DCA, 11/21/2026: From $349
    21

    Sat

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • SEA–DCA, 11/23/2026: From $349
    23

    Mon

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    24

    Tue

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    25

    Wed

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

    Thu

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    27

    Fri

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    29

    Sun

  • SEA–DCA, 11/30/2026: From $299
    30

    Mon

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

    Tue

    DEC

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

    Wed

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

    Thu

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

    Fri

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

    Sat

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

    Sun

  • SEA–DCA: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

    • Range$299-$589

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Ronald Reagan National Airport
    Distance:
    2329 miles

    Questions we hear the most

    There are 58 weekly flights from Seattle/Tacoma to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly Seattle/Tacoma 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 Seattle/Tacoma 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.

    Explore Flights from Other Popular Origins

    Popular Flights from Seattle/Tacoma