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Islip

$123+ Cheap flights from New Hampshire to Islip, NY (ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ISP
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from New Hampshire to Islip

Cheapest flights from New Hampshire to Islip
Explore the most affordable flight options available from New Hampshire to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:11 pmBOS - ISP
1 stop15h 14mMultiple Airlines
Wed 12/245:27 pmISP - BOS
1 stop16h 25mMultiple Airlines
Deal found 12/16$443
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:34 pmBOS - ISP
Nonstop1h 36mMultiple Airlines
Sun 1/48:24 pmISP - BOS
2 stops52h 55mMultiple Airlines
Deal found 12/16$468
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:56 amBOS - ISP
1 stop8h 44mMultiple Airlines
Sun 12/218:35 pmISP - BOS
1 stop13h 26mMultiple Airlines
Deal found 12/15$471
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:18 pmBOS - ISP
2 stops28h 19mMultiple Airlines
Thu 1/112:30 pmISP - BOS
Nonstop1h 34mMultiple Airlines
Deal found 12/16$481
This Booking.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:30 amBOS - ISP
Nonstop1h 35mCape Air
Wed 12/2412:30 pmISP - BOS
Nonstop1h 34mCape Air
Deal found 12/16$508
This Cape Air deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cape Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:30 amBOS - ISP
Nonstop1h 35mCape Air
Sun 1/47:25 amISP - BOS
Nonstop1h 34mCape Air
Deal found 12/17$520
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:30 amBOS - ISP
Nonstop1h 35mMultiple Airlines
Tue 12/168:29 pmISP - BOS
1 stop13h 32mMultiple Airlines
Deal found 12/15$545

Find flight deals from New Hampshire to Islip

Keep the following information in mind while searching for New Hampshire to Islip flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$164
(Kiwi.com)

One-way from

$123
(Kiwi.com)

Popular in

February

Cheapest in

November

Average price

$192
Provider with most accurate pricing for Boston Logan Intl-New York (NYC) flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-New York (NYC) flights.
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From New Hampshire to Islip Long Island
Search Deals
One-way flight from New Hampshire to Islip Long Island
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from New Hampshire to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from New Hampshire to Islip that are best for you.

Fly from

New Hampshire

Fly to

Islip

Route

Depart

Return

Price

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 1/12

11:41 am-7:51 pm

1 stop8h 10m

Islip Long Island

Mon 1/19

8:54 pm-5:44 pm

2 stops20h 50m

$164

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 2/19

5:20 am-4:25 pm

2 stops11h 05m

Islip Long Island

Sun 2/22

5:35 pm-11:40 pm

1 stop6h 05m

$383

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 1/2

9:30 am-11:05 am

Nonstop1h 35m

Islip Long Island

Tue 1/6

12:00 pm-1:19 am

2 stops37h 19m

$404

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Tue 12/30

2:34 pm-4:10 pm

Nonstop1h 36m

Islip Long Island

Thu 1/1

9:59 am-11:24 am

Nonstop1h 25m

$508

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Sat 1/10

2:34 pm-4:10 pm

Nonstop1h 36m

Islip Long Island

Fri 1/16

7:25 am-8:59 am

Nonstop1h 34m

$520

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 12/29

9:30 am-11:05 am

Nonstop1h 35m

Islip Long Island

Thu 1/1

12:30 pm-2:04 pm

Nonstop1h 34m

$520

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Tue 1/6

6:19 pm-7:45 pm

Nonstop1h 26m

Islip Long Island

Thu 1/15

9:59 am-11:24 am

Nonstop1h 25m

$520

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 1/1

2:34 pm-4:10 pm

Nonstop1h 36m

Islip Long Island

Mon 1/5

12:30 pm-2:04 pm

Nonstop1h 34m

$520

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 1/8

9:30 am-11:05 am

Nonstop1h 35m

Islip Long Island

Wed 1/14

9:59 am-11:24 am

Nonstop1h 25m

$520

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 12/29

9:30 am-11:05 am

Nonstop1h 35m

Islip Long Island

Tue 12/30

9:59 am-11:24 am

Nonstop1h 25m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 25 results
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Best time to book a flight from New Hampshire to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from New Hampshire with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New Hampshire to Islip

What is the cheapest month to book a flight from New Hampshire to Islip, New York?

Currently, December is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $54). Flying from New Hampshire to Islip, New York in April is currently the most expensive (average of $268). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Islip from New Hampshire?

    Islip Long Island (ISP) is the airport you will fly into if you book a flight from New Hampshire to Islip. It is only a 7.2 mi journey from Long Island (ISP) to Islip’s city center.

  • How long is the flight from New Hampshire to Islip, New York?

    A quick flight from New Hampshire to Islip, New York can take about 7h 06m. Southwest provides one of the quickest options available for as low as $797. The distance between New Hampshire and Islip, New York is about 243 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from New Hampshire to Islip that include hotel bookings?

    Yes. In addition to deals on New Hampshire to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Hampshire to Islip.

  • Can I find deals for business class flights from New Hampshire to Islip?

    Yes. Cheapflights offers flight deals from New Hampshire to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Hampshire to Islip, New York?

    Currently, December is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $54). Flying from New Hampshire to Islip, New York in April is currently the most expensive (average of $268). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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