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ISP - BOS

$135 Find Cheap Flights from Islip to Boston - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$289
Typical prices: $506-$620
Southwest
Fri 10/26Sun 10/28
ISP - BOS • 1 stop
Cheapest non-stop
$498
Typical prices: $511-$620
Cape Air
Thu 10/25Sun 10/28
ISP - BOS • Non-stop
Nonstop flights
6 days a week
You can fly direct with Cape Air. Average duration is 1h 22m
Direct flights
+1
Direct flights
+1
When to travel
June
Cheapest • 3% price drop
July
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Boston!

Cheap Flights from Islip to Boston (ISP-BOS)

 

Cheap flights from Islip to Boston with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Mon, Oct 26 - Wed, Oct 28
Southwest Logo
5:40 pm - 12:10 amISP  Islip Long Island-BOS Boston Logan Intl
6h 30m1 stop Baltimore/Washington
Southwest Logo
5:35 am - 12:10 pmBOS  Boston Logan Intl-ISP Islip Long Island
6h 35m1 stop Baltimore/Washington
$289Southwest
Thu, Oct 29 - Fri, Oct 30
Southwest Logo
5:40 pm - 12:10 amISP  Islip Long Island-BOS Boston Logan Intl
6h 30m1 stop Baltimore/Washington
Southwest Logo
5:35 am - 11:45 amBOS  Boston Logan Intl-ISP Islip Long Island
6h 10m1 stop Baltimore/Washington
$307Southwest
Fri, Oct 30 - Sat, Oct 31
Southwest Logo
5:40 pm - 12:10 amISP  Islip Long Island-BOS Boston Logan Intl
6h 30m1 stop Baltimore/Washington
Southwest Logo
12:15 pm - 5:20 pmBOS  Boston Logan Intl-ISP Islip Long Island
5h 05m1 stop Baltimore/Washington
$307Southwest
Thu, Jan 7 - Sun, Jan 10
Southwest Logo
11:20 am - 4:05 pmISP  Islip Long Island-BOS Boston Logan Intl
4h 45m1 stop Baltimore/Washington
Southwest Logo
5:40 am - 11:55 amBOS  Boston Logan Intl-ISP Islip Long Island
6h 15m1 stop Baltimore/Washington
$312Southwest
Sun, Nov 15 - Wed, Nov 18
Southwest Logo
5:35 am - 9:40 amISP  Islip Long Island-BOS Boston Logan Intl
4h 05m1 stop Baltimore/Washington
Southwest Logo
7:55 am - 11:45 amBOS  Boston Logan Intl-ISP Islip Long Island
3h 50m1 stop Baltimore/Washington
$312Southwest
Thu, Jan 7 - Sun, Jan 10
Southwest Logo
5:45 am - 2:00 pmISP  Islip Long Island-BOS Boston Logan Intl
8h 15m2 stops Baltimore/Washington Nashville Intl
Southwest Logo
8:50 am - 3:45 pmBOS  Boston Logan Intl-ISP Islip Long Island
6h 55m1 stop Baltimore/Washington
$317Southwest
Tue, Nov 3 - Tue, Nov 10
Southwest Logo
12:30 pm - 7:00 pmISP  Islip Long Island-BOS Boston Logan Intl
6h 30m1 stop Baltimore/Washington
Southwest Logo
11:20 am - 4:15 pmBOS  Boston Logan Intl-ISP Islip Long Island
4h 55m1 stop Baltimore/Washington
$332Southwest
Wed, Nov 4 - Wed, Nov 11
Southwest Logo
12:30 pm - 3:50 pmISP  Islip Long Island-BOS Boston Logan Intl
3h 20m1 stop Baltimore/Washington
Southwest Logo
11:20 am - 4:15 pmBOS  Boston Logan Intl-ISP Islip Long Island
4h 55m1 stop Baltimore/Washington
$332Southwest
Sun, Oct 25 - Wed, Oct 28
Cape Air Logo
9:59 am - 11:19 amISP  Islip Long Island-BOS Boston Logan Intl
1h 20mnonstop
Cape Air Logo
6:19 pm - 7:49 pmBOS  Boston Logan Intl-ISP Islip Long Island
1h 30mnonstop
$498Cape Air
Thu, Oct 29 - Sun, Nov 1
Cape Air Logo
12:30 pm - 1:50 pmISP  Islip Long Island-BOS Boston Logan Intl
1h 20mnonstop
Cape Air Logo
6:19 pm - 7:49 pmBOS  Boston Logan Intl-ISP Islip Long Island
1h 30mnonstop
$500Cape Air

Price, demand and travel trends for Islip to Boston flights

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

How much is a round-trip flight from Islip to Boston?

Round-trip flights from Islip to Boston typically range from $506 to $620. The lowest price found in the past 5 days was $289, on Southwest.

What's the cheapest day of the week to fly from Islip to Boston?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Islip to Boston. It’s 2% cheaper than the average day, while Sunday is the most expensive, with prices 20% higher.

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Key details for Islip to Boston flights

Low season

March

Cheapest flight

$135
Beat the crowds with an average 56% drop in travelers.
One-way flight from Islip to Boston

When to book flights from Islip to Boston

Are your dates flexible? Find out the best times to travel from Islip to Boston 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 Boston flight questions, answered

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

  • What are the earliest and latest flights from Islip to Boston?

    These are the earliest and latest flight times available from Islip to Boston:

    • Earliest: departs at 7:05 am and lands at 8:27 am
    • Latest: departs at 5:34 pm and lands at 6:56 pm.

    The flight takes about 1h 22m.

  • What cabin classes can I book on flights from Islip to Boston?

    Only Economy Class is available on flights from Islip to Boston.

  • How long is a flight from Islip to Boston?

    A nonstop flight from Islip to Boston takes 1h 22m, covering 153 miles.

  • Do I need a passport to fly from Islip to Boston?

    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.

  • How much should I expect to pay for a Islip to Boston flight?

    Round-trip flights from Islip to Boston range from $506 to $620, with an average of $520 over the past 12 months. Anything below $506 counts as a good deal.

  • How much can I save by taking a layover when flying from Islip to Boston?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $365 round-trip via Baltimore/Washington (BWI), compared to $562 for nonstop.

  • Which aircraft model is used most often on flights from Islip to Boston?

    The Tecnam P2012 Traveler family is used most often on this route, operated mainly by Cape Air. Other aircraft seen on the route include Airbus A220-300 variants.

  • Have flight prices from Islip to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $289 to $1,400. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Islip to Boston looking right now?

    One-way fares from Islip to Boston are currently lower than usual. Average one-way flight prices are about $195, which is 36% below the typical average for this route.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • Which airports can I use when flying from Islip to Boston?

    Flights from Islip to Boston usually depart from Islip Long Island (ISP) and arrive at Boston Logan Intl (BOS).

  • Which airports do connecting flights from Islip to Boston pass through?

    Most connecting flights from Islip to Boston pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Islip to Boston?

    Yes. Flexible dates can save you up to 18% on flights from Islip to Boston. Thursday is the cheapest departure day at $514 round-trip on average, while Sunday is the most expensive at $625, a difference of $111.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Islip to Boston?

    Only Cape Air operates flights between Islip and Boston.

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are TD Garden, Fenway Park and Boston Common. These are among the most viewed places in Boston on KAYAK.

  • Which airlines include bags at no extra cost on Islip to Boston flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Cape Air: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Islip to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Sunday. On this route, Thursday flights average $514, about $111 less than Sunday fares (18% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Islip to Boston trip for June. Fares historically average $503 round-trip in that month - typically $117 less than the most expensive month, which is November (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Baltimore/Washington Airport (BWI) can be cheaper than flying direct. The cheapest layover option averages $365 round-trip on this route - about $197 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.

    • Hyatt Regency Boston Harbor
    • Hilton Boston Logan Airport
    • Hilton Garden Inn Boston Logan Airport

More options for your flight from Islip to Boston

Complete your trip to Boston with a hotel stay or car rental

Car rentals in Boston
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