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

Southwest, JetBlue, and Cape Air are the most popular carriers operating from Islip Long Island to New Hampshire

What airlines fly to New Hampshire?

United Airlines, JetBlue and American Airlines are the top three most popular airlines that fly to New Hampshire from Islip, New York according to our data. United Airlines is the first choice among our users, with 84% of people opting to fly with this airline when traveling to New Hampshire. Keep in mind that there are 3 different airlines that fly to New Hampshire on a routine basis, so you have a few additional options to choose from.

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

As of August 2025, there are 28 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 August 2025, there are 2 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.

$102 Cheap Flights from Islip to New Hampshire in 2025

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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

6:05 am - 12:35 pmISP-MHT

6h 30m1 stop

3:50 pm - 10:05 pmMHT-ISP

6h 15m1 stop

$204Southwest

Find Deal

Tue, Sep 16 - Tue, Sep 16

4:55 pm - 10:30 pmISP-PWM

5h 35m1 stop

5:45 am - 12:25 pmPWM-ISP

6h 40m1 stop

$256Southwest

Find Deal

Tue, Oct 14 - Tue, Oct 21

11:35 am - 8:00 pmISP-BOS

8h 25m1 stop

6:00 am - 3:23 pmBOS-ISP

9h 23m1 stop

$302JetBlue

Find Deal

Fri, Sep 12 - Sat, Sep 13

11:40 am - 11:29 pmISP-BOS

11h 49m1 stop

6:00 am - 3:23 pmBOS-ISP

9h 23m1 stop

$313JetBlue

Find Deal

Sat, Aug 30 - Sat, Sep 6

8:00 am - 8:47 pmISP-MHT

12h 47m1 stop

3:44 pm - 11:57 pmMHT-ISP

8h 13m1 stop

$478

Find Deal

Mon, Aug 18 - Fri, Aug 22

7:30 am - 8:57 amISP-BOS

1h 27mnonstop

11:53 am - 1:24 pmBOS-ISP

1h 31mnonstop

$501Cape Air

Find Deal

Wed, Aug 20 - Wed, Aug 20

7:30 am - 8:57 amISP-BOS

1h 27mnonstop

11:53 am - 1:24 pmBOS-ISP

1h 31mnonstop

$504Cape Air

Find Deal

Wed, Aug 20 - Sat, Aug 23

2:19 pm - 3:46 pmISP-BOS

1h 27mnonstop

10:34 am - 6:59 pmBOS-ISP

8h 25m2 stops

$543

Find Deal

Sun, Aug 17 - Thu, Aug 21

1:55 pm - 7:27 pmISP-PWM

29h 32m2 stops

8:07 pm - 6:59 pmPWM-ISP

22h 52m2 stops

$563Breeze Airways

Find Deal

Tue, Aug 19 - Wed, Aug 27

8:45 pm - 5:00 pmISP-PWM

20h 15m1 stop

5:40 pm - 6:28 pmPWM-ISP

24h 48m1 stop

$610Breeze Airways

Find Deal

Wed, Nov 5 - Sun, Nov 9

Southwest flights from Islip, New York to New Hampshire

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

Southwest

Sep 16

ISP6:05 amIslip Long Island

6h 30m

1 stop

MHT12:35 pmManchester

Sep 16

MHT3:50 pmManchester

6h 15m

1 stop

ISP10:05 pmIslip Long Island

$204

Find similar

Southwest

Oct 14

ISP4:55 pmIslip Long Island

5h 35m

1 stop

PWM10:30 pmPortland

Oct 21

PWM5:45 amPortland

6h 40m

1 stop

ISP12:25 pmIslip Long Island

$256

Find similar

Southwest

Aug 27

ISP12:30 pmIslip Long Island

4h 35m

1 stop

BOS5:05 pmBoston Logan Intl

Sep 3

BOS5:50 pmBoston Logan Intl

4h 15m

1 stop

ISP10:05 pmIslip Long Island

$276

Find similar

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

Aug 20

ISP7:30 amIslip Long Island

1h 27m

BOS8:57 amBoston Logan Intl

Aug 20

BOS11:53 amBoston Logan Intl

1h 31m

ISP1:24 pmIslip Long Island

$501

Find similar

Cape Air

Aug 20

ISP7:30 amIslip Long Island

1h 27m

BOS8:57 amBoston Logan Intl

Aug 23

BOS11:53 amBoston Logan Intl

1h 31m

ISP1:24 pmIslip Long Island

$504

Find similar

Cape Air

Aug 9

ISP2:19 pmIslip Long Island

1h 27m

BOS3:46 pmBoston Logan Intl

Aug 16

BOS11:53 amBoston Logan Intl

1h 31m

ISP1:24 pmIslip Long Island

$508

Find similar

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

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Tue 9/16

6:05 am-12:35 pm

1 stop6h 30m

Manchester

Tue 9/16

3:50 pm-10:05 pm

1 stop6h 15m

$204

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 10/14

4:55 pm-10:30 pm

1 stop5h 35m

Portland

Tue 10/21

5:45 am-12:25 pm

1 stop6h 40m

$256

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 9/12

11:35 am-8:00 pm

1 stop8h 25m

Boston Logan Intl

Sat 9/13

6:00 am-3:23 pm

1 stop9h 23m

$302

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 8/30

11:40 am-11:29 pm

1 stop11h 49m

Boston Logan Intl

Sat 9/6

6:00 am-3:23 pm

1 stop9h 23m

$313

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 8/18

8:00 am-8:47 pm

1 stop12h 47m

Manchester

Fri 8/22

3:44 pm-11:57 pm

1 stop8h 13m

$478

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 8/20

7:30 am-8:57 am

Nonstop1h 27m

Boston Logan Intl

Wed 8/20

11:53 am-1:24 pm

Nonstop1h 31m

$501

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 8/20

7:30 am-8:57 am

Nonstop1h 27m

Boston Logan Intl

Sat 8/23

11:53 am-1:24 pm

Nonstop1h 31m

$504

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 8/17

2:19 pm-3:46 pm

Nonstop1h 27m

Boston Logan Intl

Thu 8/21

10:34 am-6:59 pm

2 stops8h 25m

$543

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 8/19

1:55 pm-7:27 pm

2 stops29h 32m

Portland

Wed 8/27

8:07 pm-6:59 pm

2 stops22h 52m

$563

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Wed 11/5

8:45 pm-5:00 pm

1 stop20h 15m

Portland

Sun 11/9

5:40 pm-6:28 pm

1 stop24h 48m

$610

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 month to fly to New Hampshire?

The month of June is another great option to travel to New Hampshire, with average flight prices from Islip, New York averaging around $238.

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 Saturday when prices can be found for as low as $157. 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 $426.

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 $187. 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 in the evening because they tend to be around $294. 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

Best Price Found	$102
Fastest flight time	1h 27m
Direct flights	Every day
Airports in New Hampshire	3 airports

The best one-way flight to New Hampshire from Islip, New York in the past 72 hours is $102. The best round-trip flight deal from Islip, New York to New Hampshire found on momondo in the last 72 hours is $204.

The fastest flight from Islip, New York to New Hampshire takes 1h 27m

Direct flights go from Islip, New York to New Hampshire every day.

There are 3 airports near New Hampshire: Boston Logan Intl (BOS), Portland (PWM), Manchester (MHT)

Search flight deals

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 August 2025, there are 2 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.

An easier way to manage your New Hampshire trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to New Hampshire

Popular cities in New Hampshire

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Cheap flights from Islip, New York to New Hampshire from $102

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to New Hampshire departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Southwest flights from Islip, New York to New Hampshire

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

Cape Air flights from Islip, New York to New Hampshire

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

momondo Fare Finder

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

See travel insights to New Hampshire from

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

What is the cheapest month to fly to New Hampshire?

The month of June is another great option to travel to New Hampshire, with average flight prices from Islip, New York averaging around $238.

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

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

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

Southwest, JetBlue, and Cape Air are the most popular carriers operating from Islip Long Island to New Hampshire

What airlines fly to New Hampshire?

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

As of August 2025, there are 28 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.

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

Best Price Found

Fastest flight time

Direct flights

Airports in New Hampshire

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

How many operators does momondo search 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?

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

Why use momondo?

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

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

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

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

An easier way to manage your New Hampshire trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to New Hampshire

Popular cities in New Hampshire

Popular flights according to clicks in the last 7 days on momondo