What is the cheapest airline that flies from Islip Long Island to New Hampshire?

Frontier, Southwest, and Breeze Airways are the most popular carriers operating from Islip Long Island to New Hampshire

How many flights depart from Islip, New York to New Hampshire on average per week?

As of April 2026, there are 7 flights per week flying from Islip, New York to New Hampshire. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

When did momondo last update prices for flights from Islip Long Island Airport to New Hampshire?

Prices for flights from Islip Long Island Airport to New Hampshire were last updated today.

How many operators does momondo search for flights from Islip Long Island Airport to New Hampshire?

As of April 2026, there are 3 operators available to choose from for flights from Islip Long Island Airport to New Hampshire.

How old do you have to be to fly from Islip Long Island Airport to New Hampshire?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to New Hampshire.

What documentation or ID do you need to fly to New Hampshire?

The travel and health documents required for your trip to New Hampshire can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at New Hampshire. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$108 Cheap Flights from Islip to New Hampshire in 2026

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Find the cheapest flights from Islip, New York to New Hampshire

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 am - 7:15 pm

ISP

BOS

8h 15m

1 stop

8:47 am - 10:03 am

BOS

ISP

25h 16m

2 stops

$235Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

11:00 am - 7:15 pm

ISP

BOS

8h 15m

1 stop

9:20 am - 10:03 am

BOS

ISP

24h 43m

1 stop

$244Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

5:38 pm - 9:12 am

ISP

BOS

15h 34m

1 stop

10:07 am - 1:28 pm

BOS

ISP

27h 21m

2 stops

$257Multiple Airlines

Tue, May 5 - Thu, May 7

11:50 am - 11:33 am

ISP

BOS

23h 43m

1 stop

9:18 am - 9:33 am

BOS

ISP

24h 15m

2 stops

$273Multiple Airlines

Wed, Apr 15 - Wed, Apr 22

4:10 pm - 10:35 pm

ISP

PWM

6h 25m

1 stop

6:10 am - 11:55 am

PWM

ISP

5h 45m

1 stop

$287Southwest

Tue, May 5 - Tue, May 12

5:38 pm - 9:12 am

ISP

BOS

15h 34m

1 stop

10:07 am - 10:05 am

BOS

ISP

23h 58m

1 stop

$290Frontier

Tue, May 5 - Thu, May 7

11:50 am - 11:33 am

ISP

BOS

23h 43m

1 stop

3:27 pm - 9:33 am

BOS

ISP

18h 06m

1 stop

$313Multiple Airlines

Wed, Apr 15 - Wed, Apr 22

8:31 pm - 1:24 am

ISP

BOS

28h 53m

2 stops

10:17 am - 11:00 am

BOS

ISP

24h 43m

1 stop

$327Frontier

Mon, May 4 - Mon, May 11

5:50 pm - 12:05 am

ISP

PWM

6h 15m

1 stop

5:30 am - 11:45 am

PWM

ISP

6h 15m

1 stop

$329Southwest

Thu, Jun 4 - Sun, Jun 7

5:50 pm - 12:05 am

ISP

PWM

6h 15m

1 stop

5:30 am - 4:40 pm

PWM

ISP

11h 10m

2 stops

$334Southwest

Thu, Jun 4 - Sun, Jun 7

Cape Air flights from Islip, New York to New Hampshire

Our best Cape Air deals on Islip, New York to New Hampshire flight tickets

Cape Air

May 29

ISP12:30 pmIslip Long Island

1h 34m

BOS2:04 pmBoston Logan Intl

May 31

BOS2:34 pmBoston Logan Intl

1h 36m

ISP4:10 pmIslip Long Island

$501

Cape Air

Jul 24

ISP9:59 amIslip Long Island

1h 25m

BOS11:24 amBoston Logan Intl

Jul 26

BOS6:19 pmBoston Logan Intl

1h 26m

ISP7:45 pmIslip Long Island

$502

Cape Air

Jun 4

ISP9:59 amIslip Long Island

1h 25m

BOS11:24 amBoston Logan Intl

Jun 9

BOS9:30 amBoston Logan Intl

1h 35m

ISP11:05 amIslip Long Island

$520

JetBlue flights from Islip, New York to New Hampshire

Our best JetBlue deals on Islip, New York to New Hampshire flight tickets

JetBlue

Jun 4

ISP12:25 pmIslip Long Island

11h 02m

1 stop

BOS11:27 pmBoston Logan Intl

Jun 9

BOS6:10 amBoston Logan Intl

7h 29m

1 stop

ISP1:39 pmIslip Long Island

$434

JetBlue

Jun 1

ISP12:25 pmIslip Long Island

11h 02m

1 stop

BOS11:27 pmBoston Logan Intl

Jun 3

BOS6:10 amBoston Logan Intl

7h 29m

1 stop

ISP1:39 pmIslip Long Island

$448

JetBlue

Jun 4

ISP2:35 pmIslip Long Island

8h 31m

1 stop

BOS11:06 pmBoston Logan Intl

Jun 9

BOS6:10 amBoston Logan Intl

7h 29m

1 stop

ISP1:39 pmIslip Long Island

$458

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 6/3

11:00 am-7:15 pm

1 stop8h 15m

Boston Logan Intl

Wed 6/10

8:47 am-10:03 am

2 stops25h 16m

$235

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 6/3

11:00 am-7:15 pm

1 stop8h 15m

Boston Logan Intl

Wed 6/10

9:20 am-10:03 am

1 stop24h 43m

$244

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 5/5

5:38 pm-9:12 am

1 stop15h 34m

Boston Logan Intl

Thu 5/7

10:07 am-1:28 pm

2 stops27h 21m

$257

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 4/15

11:50 am-11:33 am

1 stop23h 43m

Boston Logan Intl

Wed 4/22

9:18 am-9:33 am

2 stops24h 15m

$273

Quickest round-trip

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 5/5

4:10 pm-10:35 pm

1 stop6h 25m

Portland

Tue 5/12

6:10 am-11:55 am

1 stop5h 45m

$287

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 5/5

5:38 pm-9:12 am

1 stop15h 34m

Boston Logan Intl

Thu 5/7

10:07 am-10:05 am

1 stop23h 58m

$290

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 4/15

11:50 am-11:33 am

1 stop23h 43m

Boston Logan Intl

Wed 4/22

3:27 pm-9:33 am

1 stop18h 06m

$313

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 5/4

8:31 pm-1:24 am

2 stops28h 53m

Boston Logan Intl

Mon 5/11

10:17 am-11:00 am

1 stop24h 43m

$327

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Thu 6/4

5:50 pm-12:05 am

1 stop6h 15m

Portland

Sun 6/7

5:30 am-11:45 am

1 stop6h 15m

$329

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Thu 6/4

5:50 pm-12:05 am

1 stop6h 15m

Portland

Sun 6/7

5:30 am-4:40 pm

2 stops11h 10m

$334

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to New Hampshire

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to New Hampshire?

The cheapest day to depart on your flight to New Hampshire is on a Friday when prices can be found for as low as $464. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to New Hampshire is Sunday, with ticket prices averaging around $700.

What is the cheapest time of day to depart on your flight to New Hampshire?

According to our data, the cheapest time of day to fly to New Hampshire is in the morning. momondo users have found flights departing from Islip, New York to New Hampshire in the morning for as low as $511. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $520. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Islip, New York to New Hampshire flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to New Hampshire

Fastest flight time	1h 25m
Direct flights	Mon, Tue, Wed, Fri, Sat and Sun
Airports in New Hampshire	52 airports

The fastest flight from Islip, New York to New Hampshire takes 1h 25m

Direct flights go from Islip, New York to New Hampshire on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There are 52 airports in New Hampshire. From Islip, New York there are direct flights to Boston Logan Intl (BOS).

Search flight deals

Frequently asked questions about flying from Islip, New York to New Hampshire

When did momondo last update prices for flights from Islip Long Island Airport to New Hampshire?
Prices for flights from Islip Long Island Airport to New Hampshire were last updated today.
How many operators does momondo search for flights from Islip Long Island Airport to New Hampshire?
As of April 2026, there are 3 operators available to choose from for flights from Islip Long Island Airport to New Hampshire.
How old do you have to be to fly from Islip Long Island Airport to New Hampshire?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to New Hampshire.
What documentation or ID do you need to fly to New Hampshire?
The travel and health documents required for your trip to New Hampshire can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at New Hampshire. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Islip to New Hampshire?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Islip to New Hampshire for you.

Can I find flights from Islip to New Hampshire with flexible booking policies on momondo?

Flights from Islip to New Hampshire with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Islip to New Hampshire?

Once all potential Islip to New Hampshire flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Islip to New Hampshire right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to New Hampshire now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to New Hampshire and let you know when they change.