Southwest® flights from Long Island/Islip MacArthur to Washington D.C. Reagan National from $204

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Low fares from Long Island/Islip MacArthur to Washington D.C. Reagan National

$

Long Island/Islip MacArthur (ISP)to

Washington D.C. Reagan National (DCA)
Depart: 12/17/2026

One-way

Basic

From
$204
Seen: 18 hrs ago

Long Island/Islip MacArthur (ISP)to

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

One-way

Basic

From
$204
Seen: 7 hrs ago

Long Island/Islip MacArthur (ISP)to

Washington D.C. Reagan National (DCA)
Depart: 12/10/2026

One-way

Basic

From
$214
Seen: 17 hrs ago

Long Island/Islip MacArthur (ISP)to

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

One-way

Choice

From
$239
Seen: 7 hrs ago

Long Island/Islip MacArthur (ISP)to

Washington D.C. Reagan National (DCA)
Depart: 12/17/2026

One-way

Choice

From
$239
Seen: 18 hrs ago

Long Island/Islip MacArthur (ISP)to

Washington D.C. Reagan National (DCA)
Depart: 12/10/2026

One-way

Choice

From
$249
Seen: 17 hrs ago

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Explore flights from Long Island/Islip MacArthur to Washington D.C. Reagan National

Nov 2026
From$255*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$204*
Seen: 7 hrs ago
One Way/Basic
Jan 2027
From$300*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $214
cmp-daily-histogram-bars-legend-max-price-aria-label $434
Displaying fares for November-2026
  • ISP–DCA, 11/11/2026: From $434
    11

    Wed

    NOV

  • ISP–DCA: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

  • ISP–DCA, 11/13/2026: From $434
    13

    Fri

  • ISP–DCA, 11/14/2026: From $434
    14

    Sat

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

    Sun

  • ISP–DCA, 11/16/2026: From $434
    16

    Mon

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

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

  • ISP–DCA, 11/22/2026: From $349
    22

    Sun

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

    Mon

  • ISP–DCA, 11/24/2026: From $255
    24

    Tue

  • ISP–DCA, 11/25/2026: From $295
    25

    Wed

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

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

    DEC

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

    Wed

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

    Thu

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

    Fri

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

    Sat

  • ISP–DCA, 12/06/2026: From $295
    06

    Sun

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

    Mon

  • ISP–DCA: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

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

    Wed

  • ISP–DCA, 12/10/2026: From $214
    10

    Thu

    • Range$214-$434

    *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:
    Long Island MacArthur Airport
    Arriving at:
    Ronald Reagan National Airport
    Distance:
    249 miles

    Questions we hear the most

    There are 12 weekly flights from Long Island/Islip MacArthur to Washington, D.C. (Reagan National) on Southwest Airlines.
    To find the lowest fares by day and time to fly Long Island/Islip MacArthur 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 Long Island/Islip MacArthur 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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