How far in advance should I book a flight from Islip, New York to Manchester, New Hampshire?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 54 days in advance, which can save you up to 183% on flights from Islip, New York to Manchester, New Hampshire compared to booking the week you need them. Waiting 54 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $166. For sooner than that we have options available in the next 3 days from $312.

What is the cheapest month to fly from Islip, New York to Manchester, New Hampshire?

Due to multiple factors, expect to potentially pay more when booking in April. For low rates, October can be a great choice for travel to Manchester, New Hampshire. Flights to Manchester, New Hampshire from Islip, New York in October are about $194 on average during October, but can be found for as low as $37.

What is the cheapest time of day to fly from ISP to MHT?

When flying from Islip, New York to Manchester, New Hampshire, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Islip to Manchester that include hotel bookings?

Yes. In addition to deals on Islip to Manchester flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to Manchester?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Manchester.

Can I find deals for business class flights from Islip to Manchester?

Yes. Cheapflights offers flight deals from Islip to Manchester by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$144+ Flights from Islip, NY to Manchester, NH

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Cheap flight deals from Islip to Manchester

Round-trip from	$278 (Southwest)
One-way from	$144 (Trip.com)
Popular in	April
Cheapest in	October
Average price	$215

From Islip Long Island to Manchester

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One-way flight from Islip Long Island to Manchester

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Highest demand for flights based on searches. 19% potential increase in price ($46 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Find flight deals from Islip to Manchester

Cheapest flights from Islip to Manchester
Explore the most affordable flight options available from Islip to Manchester. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Tue 7/86:00 amISP - MHT

1 stop4h 00mSouthwest

Tue 7/158:20 amMHT - ISP

1 stop5h 45mSouthwest

Deal found 6/10

$278

Best flights from Islip to Manchester
Discover carefully curated flight deals from Islip to Manchester that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 7/86:00 amISP - MHT

1 stop4h 00mSouthwest

Tue 7/158:20 amMHT - ISP

1 stop5h 45mSouthwest

Deal found 6/10

$278

Last-minute flights from Islip to Manchester
Discover last-minute flight deals from Islip to Manchester. Data last updated June 12, 2025 and is based on user searches.

Tue 7/86:00 amISP - MHT

1 stop4h 00mSouthwest

Tue 7/158:20 amMHT - ISP

1 stop5h 45mSouthwest

Deal found 6/10

$278

One-way flights from Islip to Manchester
Search for one-way flight options from Islip to Manchester. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Fri 6/208:00 amISP - MHT

1 stop12h 47mMultiple Airlines

Deal found 6/11

$144

Fri 7/115:45 pmISP - MHT

1 stop6h 20mSouthwest

Deal found 6/11

$154

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Manchester that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Tue 7/8

6:00 am-10:00 am

1 stop4h 00m

Manchester

Tue 7/15

8:20 am-2:05 pm

1 stop5h 45m

$278

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 6/20

8:00 am-8:47 pm

1 stop12h 47m

$144

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 7/11

5:45 pm-12:05 am

1 stop6h 20m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Islip to Manchester

Have a flexible travel schedule? Discover the best time to fly to Manchester from Islip 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 Islip to Manchester

What is the cheapest month to book a flight from Islip, New York to Manchester, New Hampshire?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Manchester, New Hampshire (average of $334). Flying from Islip, New York to Manchester, New Hampshire in July is currently the most expensive (average of $399). 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.

Reviews of airlines servicing Manchester

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,287 reviews

Southwest

8.0

Very good

4,287 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Can I find deals for flights from Islip to Manchester that include hotel bookings?
Yes. In addition to deals on Islip to Manchester flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Manchester?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Manchester.
Can I find deals for business class flights from Islip to Manchester?
Yes. Cheapflights offers flight deals from Islip to Manchester 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 Islip, New York to Manchester, New Hampshire?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to Manchester, New Hampshire (average of $334). Flying from Islip, New York to Manchester, New Hampshire in July is currently the most expensive (average of $399). 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.

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$144+ Cheap flights from Islip, NY to Manchester, NH (ISP - MHT)

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 6/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Manchester with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Manchester

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Islip to Manchester

Cheapest flights from Islip to ManchesterExplore the most affordable flight options available from Islip to Manchester. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Islip to Manchester. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Manchester that are best for you.

Best time to book a flight from Islip to Manchester

Have a flexible travel schedule? Discover the best time to fly to Manchester from Islip with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Islip to Manchester

What is the cheapest month to book a flight from Islip, New York to Manchester, New Hampshire?

Reviews of airlines servicing Manchester

Related info for your journey

Find useful and relevant information for your journey from Islip to Manchester. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Islip to Manchester that include hotel bookings?

How can I find direct flights from Islip to Manchester?

Can I find deals for business class flights from Islip to Manchester?

What is the cheapest month to book a flight from Islip, New York to Manchester, New Hampshire?

Traveling to a place near Islip?

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Alternative routes for Islip to Manchester

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Cheapest flights from Islip to Manchester
Explore the most affordable flight options available from Islip to Manchester. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.