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

Aug 2026
From$249*
Viewed: 17 hours ago
Flight Type One Way/Economy
Sep 2026
From$249*
Viewed: 17 hours ago
Flight Type One Way/Economy
Oct 2026
From$249*
Viewed: 18 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 August-2026
  • ISP–BOS, 08/03/2026: From $339
    03

    Mo

    AUG

  • ISP–BOS, 08/04/2026: From $309
    04

    Tu

  • ISP–BOS, 08/05/2026: From $309
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    We

  • ISP–BOS, 08/06/2026: From $309
    06

    Th

  • ISP–BOS, 08/07/2026: From $309
    07

    Fr

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

    Sa

  • ISP–BOS, 08/09/2026: From $339
    09

    Su

  • ISP–BOS, 08/10/2026: From $339
    10

    Mo

  • ISP–BOS, 08/11/2026: From $309
    11

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  • ISP–BOS, 08/12/2026: From $249
    12

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  • ISP–BOS, 08/13/2026: From $309
    13

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  • ISP–BOS, 08/14/2026: From $249
    14

    Fr

  • ISP–BOS, 08/15/2026: From $249
    15

    Sa

  • ISP–BOS, 08/16/2026: From $309
    16

    Su

  • ISP–BOS, 08/17/2026: From $309
    17

    Mo

  • ISP–BOS, 08/18/2026: From $249
    18

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  • ISP–BOS, 08/19/2026: From $249
    19

    We

  • ISP–BOS, 08/20/2026: From $249
    20

    Th

  • ISP–BOS, 08/21/2026: From $249
    21

    Fr

  • ISP–BOS, 08/22/2026: From $249
    22

    Sa

  • ISP–BOS, 08/23/2026: From $309
    23

    Su

  • ISP–BOS, 08/24/2026: From $309
    24

    Mo

  • ISP–BOS, 08/25/2026: From $249
    25

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  • ISP–BOS, 08/26/2026: From $249
    26

    We

  • ISP–BOS, 08/27/2026: From $249
    27

    Th

  • ISP–BOS, 08/28/2026: From $249
    28

    Fr

  • ISP–BOS, 08/29/2026: From $309
    29

    Sa

  • ISP–BOS, 08/30/2026: From $249
    30

    Su

  • ISP–BOS, 08/31/2026: From $249
    31

    Mo

  • ISP–BOS, 09/01/2026: From $249
    01

    Tu

    SEP

  • ISP–BOS, 09/02/2026: From $249
    02

    We

    • 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: 06/19/2027

    Fares From

    $249

    Viewed: 21 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/30/2027

    Fares From

    $249

    Viewed: 21 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/23/2027

    Fares From

    $249

    Viewed: 21 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 06/29/2027

    Fares From

    $249

    Viewed: 21 hours ago

    Islip, Long Island (ISP)Boston (BOS)One-way
    /
    Economy    		Depart: 04/03/2027

    Fares From

    $249

    Viewed: 20 hours ago

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

    Fares From

    $249

    Viewed: 20 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