ISP - BOS

$141 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
$258
Typical prices: $506-$620
Southwest
Sat 12/15Sun 12/16
ISP - BOS • 1 stop
Cheapest one-way
$129
Typical prices: $260-$344
Southwest
Fri 2/2
ISP - BOS • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Islip and Boston. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
June
Cheapest • 3% price drop
July
Most popular
Good to know
+1
Good to know
+1
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Flight Deals

Cheap Flights from Islip to Boston (ISP-BOS)

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

Recent round-trip flight deals from Islip to Boston

Tue, Dec 15 - Wed, Dec 16
Southwest Logo
4:05 pm - 9:55 pmISP  Islip Long Island-BOS Boston Logan Intl
5h 50m1 stop Baltimore/Washington
Southwest Logo
3:30 pm - 9:45 pmBOS  Boston Logan Intl-ISP Islip Long Island
6h 15m1 stop Baltimore/Washington
$258Southwest
Thu, Dec 17 - Sat, Dec 19
Southwest Logo
5:40 pm - 11:55 pmISP  Islip Long Island-BOS Boston Logan Intl
6h 15m1 stop Baltimore/Washington
Southwest Logo
5:15 pm - 11:45 pmBOS  Boston Logan Intl-ISP Islip Long Island
6h 30m1 stop Baltimore/Washington
$328Southwest
Tue, Dec 15 - Wed, Dec 16
Southwest Logo
6:30 am - 2:30 pmISP  Islip Long Island-BOS Boston Logan Intl
8h 00m2 stops Orlando Baltimore/Washington
Southwest Logo
5:35 pm - 9:45 pmBOS  Boston Logan Intl-ISP Islip Long Island
4h 10m1 stop Baltimore/Washington
$353Southwest
Fri, Dec 18 - Mon, Dec 21
Southwest Logo
6:05 am - 9:40 amISP  Islip Long Island-BOS Boston Logan Intl
3h 35m1 stop Baltimore/Washington
Southwest Logo
5:00 pm - 11:50 pmBOS  Boston Logan Intl-ISP Islip Long Island
6h 50m1 stop Baltimore/Washington
$362Southwest
Sat, Nov 14 - Mon, Nov 16
Southwest Logo
3:30 pm - 7:30 pmISP  Islip Long Island-BOS Boston Logan Intl
4h 00m1 stop Baltimore/Washington
Southwest Logo
9:10 am - 4:15 pmBOS  Boston Logan Intl-ISP Islip Long Island
7h 05m1 stop Baltimore/Washington
$365Southwest
Fri, Nov 20 - Fri, Nov 27
Southwest Logo
5:40 pm - 11:55 pmISP  Islip Long Island-BOS Boston Logan Intl
6h 15m1 stop Baltimore/Washington
Southwest Logo
7:45 pm - 11:35 pmBOS  Boston Logan Intl-ISP Islip Long Island
3h 50m1 stop Baltimore/Washington
$397Southwest
Fri, Nov 20 - Fri, Nov 27
Southwest Logo
5:40 pm - 10:35 pmISP  Islip Long Island-BOS Boston Logan Intl
4h 55m1 stop Baltimore/Washington
Southwest Logo
5:35 am - 11:45 amBOS  Boston Logan Intl-ISP Islip Long Island
6h 10m1 stop Baltimore/Washington
$397Southwest
Thu, Dec 17 - Sat, Dec 19
Southwest Logo
5:40 pm - 10:35 pmISP  Islip Long Island-BOS Boston Logan Intl
4h 55m1 stop Baltimore/Washington
Southwest Logo
3:00 pm - 12:05 amBOS  Boston Logan Intl-ISP Islip Long Island
9h 05m2 stops Baltimore/Washington Orlando
$402Southwest
Fri, Dec 18 - Mon, Dec 21
Southwest Logo
6:05 am - 9:40 amISP  Islip Long Island-BOS Boston Logan Intl
3h 35m1 stop Baltimore/Washington
Southwest Logo
5:25 am - 5:20 pmBOS  Boston Logan Intl-ISP Islip Long Island
11h 55m2 stops Baltimore/Washington Tampa
$404Southwest
Tue, Nov 24 - Tue, Dec 1
Southwest Logo
6:05 am - 9:40 amISP  Islip Long Island-BOS Boston Logan Intl
3h 35m1 stop Baltimore/Washington
Southwest Logo
11:20 am - 4:15 pmBOS  Boston Logan Intl-ISP Islip Long Island
4h 55m1 stop Baltimore/Washington
$409Southwest
Booking Insights

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 $258, 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.

Find deals

Key details for Islip to Boston flights

Low season

March

Cheapest flight

$129
Beat the crowds with an average 71% drop in travelers.
The most popular month to fly with an average 39% increase 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 7:44 am and lands at 9:04 am
    • Latest: departs at 12:30 pm and lands at 1:50 pm.

    The flight takes about 1h 20m.

  • 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 20m, 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 $258 to $1,748. That means the highest observed fare was about 7x 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 $171, which is 44% 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 Garden Inn Boston Logan Airport
    • Hilton 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
Hotels in Boston
Vacations in Boston