Islip, Long Island (ISP) to Boston (BOS) Flight Deals from $249!

Promo Code

Cape Air Tickets for Upcoming Islip, Long Island (ISP) to Boston (BOS) Flights

Sep 2026
From$249*
Viewed: 2 hours ago
Flight Type One Way/Economy
Oct 2026
From$249*
Viewed: 7 hours ago
Flight Type One Way/Economy
Nov 2026
From$249*
Viewed: 7 hours ago
Flight Type One Way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $249
cmp-daily-histogram-bars-legend-max-price-aria-label $339
Displaying fares for September-2026
  • ISP–BOS, 09/14/2026: From $309
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    SEP

  • ISP–BOS, 09/15/2026: From $309
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  • ISP–BOS, 09/16/2026: From $309
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  • ISP–BOS, 09/17/2026: From $339
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  • ISP–BOS, 09/18/2026: From $309
    18

    Fr

  • ISP–BOS, 09/19/2026: From $249
    19

    Sa

  • ISP–BOS, 09/20/2026: From $309
    20

    Su

  • ISP–BOS, 09/21/2026: From $249
    21

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  • ISP–BOS, 09/22/2026: From $249
    22

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  • ISP–BOS, 09/23/2026: From $249
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  • ISP–BOS, 09/24/2026: From $249
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  • ISP–BOS, 09/25/2026: From $249
    25

    Fr

  • ISP–BOS, 09/26/2026: From $309
    26

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  • ISP–BOS, 09/27/2026: From $249
    27

    Su

  • ISP–BOS, 09/28/2026: From $339
    28

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  • ISP–BOS, 09/29/2026: From $249
    29

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  • ISP–BOS, 09/30/2026: From $249
    30

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  • ISP–BOS, 10/01/2026: From $249
    01

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    OCT

  • ISP–BOS, 10/02/2026: From $249
    02

    Fr

  • ISP–BOS, 10/03/2026: From $249
    03

    Sa

  • ISP–BOS, 10/04/2026: From $249
    04

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  • ISP–BOS, 10/05/2026: From $249
    05

    Mo

  • ISP–BOS, 10/06/2026: From $249
    06

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  • ISP–BOS, 10/07/2026: From $249
    07

    We

  • ISP–BOS, 10/08/2026: From $249
    08

    Th

  • ISP–BOS, 10/09/2026: From $249
    09

    Fr

  • ISP–BOS, 10/10/2026: From $249
    10

    Sa

  • ISP–BOS, 10/11/2026: From $249
    11

    Su

  • ISP–BOS, 10/12/2026: From $249
    12

    Mo

  • ISP–BOS, 10/13/2026: From $309
    13

    Tu

    • Range$249-$339

    *Prices have been viewed by other users searching within the last 48 hours for flights on this route, and may not be currently available. Additional baggage charges and fees may apply. Other terms and conditions may apply.

    Find Islip, Long Island to Boston plane ticket offers

    $
    Find Islip, Long Island to Boston plane ticket offers
    From
    To
    Fare Type
    Dates
    Price
    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 05/25/2027

    Fares From

    $249

    Viewed: 1 day ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 05/26/2027

    Fares From

    $249

    Viewed: 22 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 05/27/2027

    Fares From

    $249

    Viewed: 22 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/04/2027

    Fares From

    $249

    Viewed: 22 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/02/2027

    Fares From

    $249

    Viewed: 22 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/11/2027

    Fares From

    $249

    Viewed: 22 hours ago

    *Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking.
    Islip, Long Island (ISP) to Boston (BOS) Flight Deals