ISP - WAS

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1 adult
1 adult, Economy, 0 bags

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Everything you should know

Top routes
ISP - IAD
Cheapest • 55% average savings
ISP - DCA
Most popular
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Top layover airports
Orlando (MCO)
Cheapest • Avg $320 (round-trip)
Boston Logan Intl (BOS)
Shortest trip • 4h 12m (one-way)
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Cheap Flights from Islip to Washington, D.C. (ISP-WAS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Washington, D.C.

Multiple Airlines Logo
ISP  Islip Long Island-WAS Washington, D.C. All airports
246 mimulti-stop
Multiple Airlines Logo
WAS  Washington, D.C. All airports-ISP Islip Long Island
246 mimulti-stop
Multiple Airlines
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Price, demand and travel trends for Islip to Washington, D.C. flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What is the cheapest Islip to Washington, D.C. flight route?

Islip (ISP) to Washington, D.C. Dulles Intl Airport (IAD) is the cheapest Islip to Washington, D.C. route, averaging $320 round-trip. Other Islip to Washington, D.C. routes average $1,108, based on KAYAK data over the past 12 months.

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When to book flights from Islip to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Islip to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Islip to Washington, D.C. flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • How long is a flight from Islip to Washington, D.C.?

    There are currently no nonstop flights available from Islip to Washington, D.C.. Flights with 1 layover take between 4h 12m and 13h 41m in total, depending on the connection.

  • Do I need a passport to fly from Islip to Washington, D.C.?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • What car rental options are available in Washington, D.C.?

    Since Washington, D.C. is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Washington, D.C. Reagan-National Airport (DCA) — daily rates averaging $71:

    • Sixt
    • Dollar
    • Thrifty
    • Hertz
    • Alamo

    Near Washington, D.C. Dulles Intl Airport (IAD) — daily rates averaging $70:

    • Dollar
    • Hertz
    • Budget
    • Sixt
    • Thrifty

  • Which airports can I use when flying from Islip to Washington, D.C.?

    Flights from Islip to Washington, D.C. usually depart from Islip Long Island (ISP) and may arrive at several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).

  • Which airports do connecting flights from Islip to Washington, D.C. pass through?

    Connecting flights from Islip to Washington, D.C. most commonly pass through:

    • Boston Logan Intl (BOS) - 50% of one-stop connections
    • Orlando (MCO) - 50% of one-stop connections

  • How much time can I save by choosing a different layover airport from Islip to Washington, D.C.?

    Flying via Boston Logan Intl (BOS) gives the shortest average 1-stop total travel time at 4h 12m, compared with 13h 41m via Orlando (MCO).

  • What popular places can I visit in Washington, D.C.?

    Some of the most popular sights in Washington, D.C. are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. on KAYAK.

Your guide to booking Islip to Washington, D.C. flights

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Complete your trip to Washington, D.C. with a hotel stay or car rental

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