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Cheap flights from Islip, New York to New Hampshire from $126

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 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to New Hampshire

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:50 am - 11:19 pm
ISP
-
BOS
35h 29m2 stops
Multiple Airlines Logo
3:43 pm - 8:09 pm
BOS
-
ISP
28h 26m1 stop
$186Multiple Airlines
Wed, Jan 7 - Thu, Jan 15
Southwest Logo
3:45 pm - 10:15 pm
ISP
-
PWM
6h 30m1 stop
Southwest Logo
3:30 pm - 9:55 pm
PWM
-
ISP
6h 25m1 stop
$271Southwest
Tue, Jan 13 - Wed, Jan 14
Multiple Airlines Logo
2:01 pm - 11:08 am
ISP
-
BOS
21h 07m2 stops
Multiple Airlines Logo
11:06 am - 7:45 pm
BOS
-
ISP
8h 39m1 stop
$340Multiple Airlines
Fri, Jan 9 - Sun, Jan 11
Southwest Logo
6:00 am - 12:25 pm
ISP
-
BOS
6h 25m1 stop
Southwest Logo
5:50 pm - 9:55 pm
BOS
-
ISP
4h 05m1 stop
$347Southwest
Tue, Jan 20 - Tue, Jan 20
Southwest Logo
6:00 am - 12:25 pm
ISP
-
BOS
6h 25m1 stop
Southwest Logo
5:50 am - 11:55 am
BOS
-
ISP
6h 05m1 stop
$357Southwest
Wed, Jan 7 - Thu, Jan 15
Southwest Logo
3:45 pm - 10:05 pm
ISP
-
BOS
6h 20m1 stop
Southwest Logo
5:50 am - 11:55 am
BOS
-
ISP
6h 05m1 stop
$367Southwest
Fri, Jan 9 - Sun, Jan 11
JetBlue Logo
2:41 pm - 10:58 pm
ISP
-
BOS
8h 17m1 stop
JetBlue Logo
6:00 am - 2:28 pm
BOS
-
ISP
8h 28m1 stop
$498JetBlue
Wed, Feb 18 - Wed, Feb 25
JetBlue Logo
1:26 pm - 3:52 pm
ISP
-
ORH
26h 26m1 stop
JetBlue Logo
4:59 pm - 10:02 am
ORH
-
ISP
17h 03m1 stop
$669JetBlue
Wed, Feb 18 - Wed, Feb 25
Breeze Airways Logo
2:28 pm - 11:22 am
ISP
-
PWM
20h 54m2 stops
Breeze Airways Logo
3:11 pm - 7:51 pm
PWM
-
ISP
28h 40m3 stops
$765Breeze Airways
Fri, Jun 12 - Sun, Jun 14
Breeze Airways Logo
2:25 pm - 5:19 pm
ISP
-
MHT
26h 54m1 stop
Breeze Airways Logo
9:59 am - 8:07 pm
MHT
-
ISP
10h 08m1 stop
$768Breeze Airways
Mon, Dec 29 - Fri, Jan 2

JetBlue flights from Islip, New York to New Hampshire

Our best JetBlue deals on Islip, New York to New Hampshire flight tickets
JetBlue
Feb 18
ISP2:41 pmIslip Long Island
8h 17m
1 stop
BOS10:58 pmBoston Logan Intl
Feb 25
BOS6:00 amBoston Logan Intl
8h 28m
1 stop
ISP2:28 pmIslip Long Island
$498
Find similar
JetBlue
Feb 18
ISP1:26 pmIslip Long Island
26h 26m
1 stop
ORH3:52 pmWorcester
Feb 25
ORH4:59 pmWorcester
17h 03m
1 stop
ISP10:02 amIslip Long Island
$669
Find similar
JetBlue
Dec 26
ISP10:46 amIslip Long Island
11h 02m
1 stop
BOS9:48 pmBoston Logan Intl
Dec 29
BOS6:00 amBoston Logan Intl
7h 19m
1 stop
ISP1:19 pmIslip Long Island
$1,065
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
Jan 20
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Jan 20
BOS2:34 pmBoston Logan Intl
1h 36m
ISP4:10 pmIslip Long Island
$502
Find similar
Cape Air
Dec 17
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Dec 17
BOS2:34 pmBoston Logan Intl
1h 36m
ISP4:10 pmIslip Long Island
$504
Find similar
Cape Air
Dec 30
ISP12:30 pmIslip Long Island
1h 34m
BOS2:04 pmBoston Logan Intl
Jan 3
BOS9:30 amBoston Logan Intl
1h 35m
ISP11:05 amIslip Long Island
$508
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to New Hampshire 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, momondo users made 832,500 searches. Data last updated December 16, 2025.
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

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 1/7

11:50 am-11:19 pm

2 stops35h 29m

Boston Logan Intl

Thu 1/15

3:43 pm-8:09 pm

1 stop28h 26m

$186

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Tue 1/13

3:45 pm-10:15 pm

1 stop6h 30m

Portland

Wed 1/14

3:30 pm-9:55 pm

1 stop6h 25m

$271

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 1/9

2:01 pm-11:08 am

2 stops21h 07m

Boston Logan Intl

Sun 1/11

11:06 am-7:45 pm

1 stop8h 39m

$340

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 1/20

6:00 am-12:25 pm

1 stop6h 25m

Boston Logan Intl

Tue 1/20

5:50 pm-9:55 pm

1 stop4h 05m

$347

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 1/7

6:00 am-12:25 pm

1 stop6h 25m

Boston Logan Intl

Thu 1/15

5:50 am-11:55 am

1 stop6h 05m

$357

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 1/9

3:45 pm-10:05 pm

1 stop6h 20m

Boston Logan Intl

Sun 1/11

5:50 am-11:55 am

1 stop6h 05m

$367

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/18

2:41 pm-10:58 pm

1 stop8h 17m

Boston Logan Intl

Wed 2/25

6:00 am-2:28 pm

1 stop8h 28m

$498

IslipWorcester

ISP - ORH

ISPORH

Islip Long Island

Wed 2/18

1:26 pm-3:52 pm

1 stop26h 26m

Worcester

Wed 2/25

4:59 pm-10:02 am

1 stop17h 03m

$669

IslipPortland

ISP - PWM

ISPPWM

Islip Long Island

Fri 6/12

2:28 pm-11:22 am

2 stops20h 54m

Portland

Sun 6/14

3:11 pm-7:51 pm

3 stops28h 40m

$765

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 12/29

2:25 pm-5:19 pm

1 stop26h 54m

Manchester

Fri 1/2

9:59 am-8:07 pm

1 stop10h 08m

$768

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

The cheapest day to depart on your flight to New Hampshire is on a Friday when prices can be found for as low as $187. 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 Tuesday, with ticket prices averaging around $520.

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 $292. 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, Wed, Thu and Sat

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, Wednesday, Thursday and Saturday. 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

  • 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?

  • 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.

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