HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$79+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ISP
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from New Hampshire to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 16, 2025.

Round-trip from

$204
(Southwest)

One-way from

$79
(Southwest)

Popular in

February

Cheapest in

October

Average price

$197
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. 18% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 16, 2025.

This Southwest deal was found by Cheapflights users on 6/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:10 pmBOS - ISP
1 stop3h 30mSouthwest
Mon 8/2512:10 pmISP - BOS
1 stop5h 50mSouthwest
Deal found 6/16$204
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/234:10 pmPWM - ISP
1 stop6h 45mSouthwest
Mon 7/286:00 amISP - PWM
1 stop4h 45mSouthwest
Deal found 6/15$278
This JetBlue deal was found by Cheapflights users on 6/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amBOS - ISP
1 stop8h 44mJetBlue
Wed 9/173:39 pmISP - BOS
1 stop6h 50mJetBlue
Deal found 6/14$403
This JetBlue Airways deal was found by Cheapflights users on 6/14. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/48:40 pmBOS - ISP
1 stop13h 11mMultiple Airlines
Sun 7/611:53 amISP - BOS
Nonstop1h 27mMultiple Airlines
Deal found 6/14$482
This Gotogate deal was found by Cheapflights users on 6/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/176:30 pmBOS - ISP
Nonstop1h 31mCape Air
Sun 7/207:30 amISP - BOS
Nonstop1h 27mCape Air
Deal found 6/16$493
This FlightHub deal was found by Cheapflights users on 6/14. 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.
Fri 9/262:36 pmPWM - ISP
3 stops28h 16mBreeze Airways
Mon 9/297:08 pmISP - PWM
1 stop17h 10mBreeze Airways
Deal found 6/14$558

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 June 16, 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

Sat 8/23

6:10 pm-9:40 pm

1 stop3h 30m

Islip Long Island

Mon 8/25

12:10 pm-6:00 pm

1 stop5h 50m

$204

PortlandIslip

PWM - ISP

PWMISP

Portland

Wed 7/23

4:10 pm-10:55 pm

1 stop6h 45m

Islip Long Island

Mon 7/28

6:00 am-10:45 am

1 stop4h 45m

$278

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Tue 9/16

6:00 am-2:44 pm

1 stop8h 44m

Islip Long Island

Wed 9/17

3:39 pm-10:29 pm

1 stop6h 50m

$403

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 7/4

8:40 pm-9:51 am

1 stop13h 11m

Islip Long Island

Sun 7/6

11:53 am-1:20 pm

Nonstop1h 27m

$482

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 7/17

6:30 pm-8:01 pm

Nonstop1h 31m

Islip Long Island

Sun 7/20

7:30 am-8:57 am

Nonstop1h 27m

$493

PortlandIslip

PWM - ISP

PWMISP

Portland

Fri 9/26

2:36 pm-6:52 pm

3 stops28h 16m

Islip Long Island

Mon 9/29

7:08 pm-12:18 pm

1 stop17h 10m

$558

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Wed 8/27

5:50 pm-10:05 pm

1 stop4h 15m

$79

PortlandIslip

PWM - ISP

PWMISP

Portland

Wed 7/30

5:30 am-12:00 pm

1 stop6h 30m

$125

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 6/30

12:53 pm-1:15 pm

1 stop24h 22m

$203

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 7/3

11:53 am-1:24 pm

Nonstop1h 31m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 12 results
1
2

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, January is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $108). Flying from New Hampshire to Islip, New York in November is currently the most expensive (average of $213). 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.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated June 16, 2025.
Breeze Airways
8.1
Very good
181 reviews

Food

6.7

Crew

8.8

Boarding

8.3

Entertainment

6.6

Overall

8.1

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
181 reviews
Breeze Airways
8.1
Very good
181 reviews

Food

6.7

Crew

8.8

Boarding

8.3

Entertainment

6.6

Overall

8.1

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,278 reviews
Breeze Airways
8.1
Very good
181 reviews

Food

6.7

Crew

8.8

Boarding

8.3

Entertainment

6.6

Overall

8.1

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
JetBlue
7.3
Good
2,922 reviews
Breeze Airways
8.1
Very good
181 reviews

Food

6.7

Crew

8.8

Boarding

8.3

Entertainment

6.6

Overall

8.1

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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.

  • What are the cheapest airlines to fly from New Hampshire to Islip, New York one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $79. However, be on the lookout for offers from Cape Air and Breeze Airways, as they are both options that can get you from New Hampshire to Islip, New York for a low price.

  • 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, January is the cheapest month in which you can book a flight from New Hampshire to Islip, New York (average of $108). Flying from New Hampshire to Islip, New York in November is currently the most expensive (average of $213). 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 New Hampshire?

Book flights to New Hampshire if you plan to visit one of these locations
Southampton
Riverhead

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for New Hampshire to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Newark flights
O'Hare Intl to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Atlanta to John F Kennedy Intl flights
San Francisco to Newark flights
Atlanta to Newark flights
Los Angeles to LaGuardia flights
Miami to John F Kennedy Intl flights
O'Hare Intl to Newark flights
Fort Lauderdale to LaGuardia flights
Atlanta to LaGuardia flights
Fort Lauderdale to Newark flights
O'Hare Intl to LaGuardia flights
Miami to Newark flights
Seattle to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
Miami to LaGuardia flights
Hobby to LaGuardia flights
Hobby to John F Kennedy Intl flights
Orlando to LaGuardia flights
San Francisco to LaGuardia flights
Hobby to Newark flights
Ontario to John F Kennedy Intl flights
Fort Lauderdale to John F Kennedy Intl flights
Seattle to Newark flights
Orlando to Newark flights
Burbank to Newark flights
Denver to John F Kennedy Intl flights
Santa Ana to Newark flights
Tampa to Newark flights
Tampa to John F Kennedy Intl flights
Minneapolis to LaGuardia flights
George Bush Intcntl to Newark flights
Sky Harbor Intl to John F Kennedy Intl flights
San Diego to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
Love Field to LaGuardia flights
San Diego to Newark flights
Sky Harbor Intl to Newark flights
West Palm Beach to John F Kennedy Intl flights
Denver to LaGuardia flights
Denver to Newark flights
Tampa to LaGuardia flights
Austin to Newark flights
Minneapolis to John F Kennedy Intl flights

Top airline flying from New Hampshire to Islip

Discover the top airline that operate flights from New Hampshire to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$254Average$466FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.