Southwest® flights from Washington D.C. Reagan National to Long Island/Islip MacArthur from $209

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

$

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 12/11/2026

One-way

Basic

From
$209
Seen: 14 hrs ago

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 12/15/2026

One-way

Basic

From
$219
Seen: 18 hrs ago

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 12/05/2026

One-way

Basic

From
$224
Seen: 13 hrs ago

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 12/04/2026

One-way

Basic

From
$229
Seen: 17 hrs ago

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 12/03/2026

One-way

Basic

From
$229
Seen: 9 minutes ago

Washington D.C. Reagan National (DCA)to

Long Island/Islip MacArthur (ISP)
Depart: 01/18/2027

One-way

Basic

From
$239
Seen: 11 hrs ago

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

Nov 2026
From$255*
Seen: 8 hrs ago
One Way/Basic
Dec 2026
From$209*
Seen: 14 hrs ago
One Way/Basic
Jan 2027
From$239*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $224
cmp-daily-histogram-bars-legend-max-price-aria-label $500
Displaying fares for November-2026
  • DCA–ISP, 11/11/2026: From $465
    11

    Wed

    NOV

  • DCA–ISP, 11/12/2026: From $434
    12

    Thu

  • DCA–ISP, 11/13/2026: From $439
    13

    Fri

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

    Sat

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

    Sun

  • DCA–ISP, 11/16/2026: From $500
    16

    Mon

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    17

    Tue

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    18

    Wed

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    19

    Thu

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

    Fri

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

    Sat

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    22

    Sun

  • DCA–ISP, 11/23/2026: From $255
    23

    Mon

  • DCA–ISP, 11/24/2026: From $465
    24

    Tue

  • DCA–ISP, 11/25/2026: From $380
    25

    Wed

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

    Thu

  • DCA–ISP, 11/27/2026: From $255
    27

    Fri

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

    Sat

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

    Sun

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    30

    Mon

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

    Tue

    DEC

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

    Wed

  • DCA–ISP, 12/03/2026: From $229
    03

    Thu

  • DCA–ISP, 12/04/2026: From $229
    04

    Fri

  • DCA–ISP, 12/05/2026: From $224
    05

    Sat

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    06

    Sun

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    07

    Mon

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    08

    Tue

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    09

    Wed

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    10

    Thu

    • Range$224-$500

    *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:
    Long Island MacArthur Airport
    Distance:
    249 miles

    Questions we hear the most

    There are 13 weekly flights from Washington, D.C. (Reagan National) to Long Island/Islip MacArthur on Southwest Airlines.
    To find the lowest fares by day and time to fly Washington, D.C. (Reagan National) to Long Island/Islip MacArthur with Southwest, check out our Low Fare Calendar.
    You can rent a car at Long Island MacArthur Airport book yours with your flight.
    Yes! Flights from Washington, D.C. (Reagan National) to Long Island/Islip MacArthur—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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