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Find cheap flights from Islip to New Hampshire from $49

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to New Hampshire departing on 6/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
qui 6/27
qui 7/4

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Best New Hampshire Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Boston
Boston2 stops$457
Portland
Portlandnonstop$98

Good to know

Cheapest flight

$49
Flight from Islip to Portland

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from Islip to New Hampshire?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to New Hampshire.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to New Hampshire?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to New Hampshire from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to New Hampshire?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to New Hampshire with an airline and back to Islip with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to New Hampshire?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to New Hampshire from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Islip to New Hampshire

 
Need help choosing which airline to fly with from Islip to New Hampshire? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.2
FrontierOverall score based on 4018 reviews
6.6Boarding
5.1Food
4.9Entertainment
5.8Comfort
7.1Crew
Airline reviews

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

2.0 MediocreBeth, May 2024PHX - PDX
Read more about Frontier reviews

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Book cheap flights from Islip to New Hampshire

Recent round-trip flight deals

6/7sex
nonstopBreeze Airways
1h 30mISP-PWM
6/10seg
nonstopBreeze Airways
1h 14mPWM-ISP
$98
6/24seg
nonstopBreeze Airways
1h 30mISP-PWM
7/1seg
nonstopBreeze Airways
1h 14mPWM-ISP
$103
6/3seg
nonstopBreeze Airways
1h 30mISP-PWM
6/10seg
nonstopBreeze Airways
1h 14mPWM-ISP
$104
7/5sex
nonstopBreeze Airways
1h 30mISP-PWM
7/8seg
nonstopBreeze Airways
1h 14mPWM-ISP
$109
6/21sex
nonstopBreeze Airways
1h 30mISP-PWM
6/24seg
nonstopBreeze Airways
1h 14mPWM-ISP
$113
6/10seg
nonstopBreeze Airways
1h 30mISP-PWM
6/17seg
nonstopBreeze Airways
1h 14mPWM-ISP
$115
6/21sex
nonstopBreeze Airways
1h 30mISP-PWM
6/24seg
nonstopBreeze Airways
1h 14mPWM-ISP
$118
7/1seg
nonstopBreeze Airways
1h 30mISP-PWM
7/8seg
nonstopBreeze Airways
1h 14mPWM-ISP
$128
7/19sex
3 stops
42h 41mISP-PWM
7/22seg
nonstop
1h 14mPWM-ISP
$413
6/9dom
2 stops
22h 26mISP-BOS
6/12qua
3 stops
19h 17mBOS-ISP
$457

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Recent one-way flight deals

6/7sex
nonstopBreeze Airways
1h 30mISP-PWM
$49
8/23sex
nonstopBreeze Airways
1h 30mISP-PWM
$54
6/21sex
nonstopBreeze Airways
1h 30mISP-PWM
$59
6/28sex
nonstopBreeze Airways
1h 30mISP-PWM
$64
6/3seg
nonstopBreeze Airways
1h 30mISP-PWM
$69
8/2sex
nonstopBreeze Airways
1h 30mISP-PWM
$74
5/31sex
nonstopBreeze Airways
1h 30mISP-PWM
$84
7/19sex
nonstopBreeze Airways
1h 30mISP-PWM
$109
6/16dom
2 stops
21h 26mISP-BOS
$193
6/16dom
3 stops
22h 58mISP-BOS
$249

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Last minute flights from Islip to New Hampshire

Last minute flight, train and bus deals

5/31sex
nonstopBreeze Airways
1h 30mISP-PWM
6/3seg
nonstopBreeze Airways
1h 14mPWM-ISP
$163
5/31sex
multi-stop
8h 47mISP-BOS
6/2dom
multi-stop
15h 58mBOS-ISP
$466
5/31sex
multi-stop
22h 47mISP-BOS
6/2dom
multi-stop
15h 58mBOS-ISP
$523
5/31sex
multi-stop
8h 47mISP-BOS
6/2dom
multi-stop
18h 08mBOS-ISP
$554
5/31sex
multi-stop
14h 29mISP-BOS
6/2dom
multi-stop
18h 08mBOS-ISP
$612
5/31sex
multi-stop
28h 29mISP-BOS
6/2dom
multi-stop
18h 08mBOS-ISP
$668

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Islip - New Hampshire Flights

Departure:

Islip (ISP)United States

Cabin classes: