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Islip

$97+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ISP
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap 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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$201
(Kiwi.com)

One-way from

$97
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$166
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
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One-way flight from New Hampshire to Islip Long Island
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Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Mon 12/19:54 pmBOS - ISP
2 stops21h 40mMultiple Airlines
Mon 12/810:19 amISP - BOS
1 stop23h 42mMultiple Airlines
Deal found 11/3$201
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Mon 11/1712:59 pmBOS - ISP
1 stop28h 43mMultiple Airlines
Fri 11/212:25 pmISP - BOS
1 stop19h 59mMultiple Airlines
Deal found 11/2$244
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/148:40 amBOS - ISP
2 stops25h 57mFrontier
Sun 11/169:27 pmISP - BOS
1 stop11h 01mFrontier
Deal found 11/2$254
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/128:11 pmBOS - ISP
1 stop13h 02mMultiple Airlines
Sun 12/1411:15 amISP - BOS
2 stops12h 41mMultiple Airlines
Deal found 11/1$270
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/148:40 amBOS - ISP
1 stop5h 05mMultiple Airlines
Sun 11/169:27 pmISP - BOS
1 stop11h 01mMultiple Airlines
Deal found 11/2$282
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:05 amBOS - ISP
1 stop6h 15mSouthwest
Wed 12/103:55 pmISP - BOS
1 stop6h 20mSouthwest
Deal found 11/3$327
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:45 amBOS - ISP
1 stop4h 30mSouthwest
Thu 11/203:55 pmISP - BOS
1 stop5h 10mSouthwest
Deal found 11/3$429
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/186:29 pmPWM - ISP
1 stop25h 36mMultiple Airlines
Sat 11/226:00 amISP - PWM
1 stop11h 38mMultiple Airlines
Deal found 11/3$516
This FlightHub deal was found by Cheapflights users on 11/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:49 amPWM - ISP
1 stop7h 06mBreeze Airways
Sun 11/2311:40 amISP - PWM
2 stops21h 26mBreeze Airways
Deal found 11/3$750
This Gotogate deal was found by Cheapflights users on 11/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:29 pmPWM - ISP
1 stop25h 36mBreeze Airways
Sat 11/228:45 pmISP - PWM
3 stops17h 45mBreeze Airways
Deal found 11/3$821

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 November 3, 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 11/17

12:59 pm-5:42 pm

1 stop28h 43m

Islip Long Island

Fri 11/21

2:25 pm-10:24 am

1 stop19h 59m

$244

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 11/14

8:40 am-10:37 am

2 stops25h 57m

Islip Long Island

Sun 11/16

9:27 pm-8:28 am

1 stop11h 01m

$254

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 12/12

8:11 pm-9:13 am

1 stop13h 02m

Islip Long Island

Sun 12/14

11:15 am-11:56 pm

2 stops12h 41m

$270

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 11/14

8:40 am-1:45 pm

1 stop5h 05m

Islip Long Island

Sun 11/16

9:27 pm-8:28 am

1 stop11h 01m

$282

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 12/8

6:19 pm-7:45 pm

Nonstop1h 26m

Islip Long Island

Wed 12/10

6:00 am-7:06 pm

1 stop13h 06m

$369

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 11/20

7:45 am-12:15 pm

1 stop4h 30m

Islip Long Island

Thu 11/20

3:55 pm-9:05 pm

1 stop5h 10m

$429

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 11/14

7:55 pm-11:50 pm

1 stop3h 55m

Islip Long Island

Sun 11/16

11:05 am-5:15 pm

1 stop6h 10m

$469

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 12/19

6:00 am-1:19 pm

1 stop7h 19m

Islip Long Island

Mon 1/19

12:25 pm-11:48 pm

1 stop11h 23m

$503

PortlandIslip

PWM - ISP

PWMISP

Portland

Tue 11/18

6:29 pm-8:05 pm

1 stop25h 36m

Islip Long Island

Sat 11/22

6:00 am-5:38 pm

1 stop11h 38m

$516

PortlandIslip

PWM - ISP

PWMISP

Portland

Wed 2/25

6:18 pm-11:15 am

2 stops16h 57m

Islip Long Island

Sat 2/28

7:35 pm-10:21 am

1 stop14h 46m

$630

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 22 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, August is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $57). 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 16h 57m. Frontier provides one of the quickest options available for as low as $630. 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, August is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $57). 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
Southampton

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