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

Promo Code

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

Aug 2026
From$309*
Viewed: 56 minutes ago
Flight Type One Way/Economy
Sep 2026
From$249*
Viewed: 8 hours ago
Flight Type One Way/Economy
Oct 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 August-2026
  • BOS–ISP, 08/23/2026: From $309
    23

    Su

    AUG

  • BOS–ISP, 08/24/2026: From $339
    24

    Mo

  • BOS–ISP, 08/25/2026: From $339
    25

    Tu

  • BOS–ISP, 08/26/2026: From $339
    26

    We

  • BOS–ISP, 08/27/2026: From $339
    27

    Th

  • BOS–ISP, 08/28/2026: From $339
    28

    Fr

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

    Sa

  • BOS–ISP, 08/30/2026: From $309
    30

    Su

  • BOS–ISP, 08/31/2026: From $309
    31

    Mo

  • BOS–ISP, 09/01/2026: From $309
    01

    Tu

    SEP

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

    We

  • BOS–ISP, 09/03/2026: From $249
    03

    Th

  • BOS–ISP, 09/04/2026: From $309
    04

    Fr

  • BOS–ISP, 09/05/2026: From $249
    05

    Sa

  • BOS–ISP, 09/06/2026: From $249
    06

    Su

  • BOS–ISP, 09/07/2026: From $249
    07

    Mo

  • BOS–ISP, 09/08/2026: From $249
    08

    Tu

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

    We

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

    Th

  • BOS–ISP, 09/11/2026: From $309
    11

    Fr

  • BOS–ISP, 09/12/2026: From $249
    12

    Sa

  • BOS–ISP, 09/13/2026: From $249
    13

    Su

  • BOS–ISP, 09/14/2026: From $249
    14

    Mo

  • BOS–ISP, 09/15/2026: From $249
    15

    Tu

  • BOS–ISP, 09/16/2026: From $309
    16

    We

  • BOS–ISP, 09/17/2026: From $249
    17

    Th

  • BOS–ISP, 09/18/2026: From $309
    18

    Fr

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

    Sa

  • BOS–ISP, 09/20/2026: From $249
    20

    Su

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

    Mo

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

    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 Boston to Islip, Long Island plane ticket offers

    $
    Find Boston to Islip, Long Island plane ticket offers
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 07/11/2027

    Fares From

    $249

    Viewed: 12 hours ago

    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 07/10/2027

    Fares From

    $249

    Viewed: 12 hours ago

    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 04/20/2027

    Fares From

    $249

    Viewed: 11 hours ago

    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 04/29/2027

    Fares From

    $249

    Viewed: 11 hours ago

    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 04/25/2027

    Fares From

    $249

    Viewed: 11 hours ago

    Boston (BOS)Islip, Long Island (ISP)One-way
    /
    Economy    		Depart: 04/23/2027

    Fares From

    $249

    Viewed: 11 hours ago

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