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Cheap flights from Islip, New York to Boston from $314

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Boston departing on 12/9. 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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Cheap round-trip flights

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Multiple Airlines Logo
8:29 pm - 6:56 pmISP-MHT
22h 27m1 stop
Multiple Airlines Logo
7:36 pm - 9:58 amMHT-ISP
14h 22m2 stops
$314Multiple Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
Multiple Airlines Logo
8:29 pm - 6:56 pmISP-MHT
22h 27m1 stop
Multiple Airlines Logo
7:36 pm - 10:20 amMHT-ISP
14h 44m1 stop
$349Multiple Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
Breeze Airways Logo
11:50 am - 10:43 amISP-MHT
22h 53m1 stop
Breeze Airways Logo
9:55 am - 6:55 pmMHT-ISP
9h 00m1 stop
$515Breeze Airways
Find Deal
Sat, Jan 31 - Wed, Feb 4
Breeze Airways Logo
7:35 pm - 10:43 amISP-MHT
15h 08m2 stops
Breeze Airways Logo
9:55 am - 6:55 pmMHT-ISP
9h 00m1 stop
$561Breeze Airways
Find Deal
Sat, Jan 31 - Wed, Feb 4

Breeze Airways flights from Islip, New York to Manchester, New Hampshire

Our best Breeze Airways deals on Islip, New York to Manchester, New Hampshire flight tickets
Breeze Airways
Jan 31
ISP11:50 amIslip Long Island
22h 53m
1 stop
MHT10:43 amManchester
Feb 4
MHT9:55 amManchester
9h 00m
1 stop
ISP6:55 pmIslip Long Island
$515
Find similar
Breeze Airways
Jan 31
ISP7:35 pmIslip Long Island
15h 08m
2 stops
MHT10:43 amManchester
Feb 4
MHT9:55 amManchester
9h 00m
1 stop
ISP6:55 pmIslip Long Island
$561
Find similar

Southwest flights from Islip, New York to Manchester, New Hampshire

Our best Southwest deals on Islip, New York to Manchester, New Hampshire flight tickets
Southwest
Dec 1
ISP5:40 amIslip Long Island
6h 30m
1 stop
MHT12:10 pmManchester
Dec 20
MHT2:30 pmManchester
6h 20m
1 stop
ISP8:50 pmIslip Long Island
$588
Find similar
Southwest
Dec 1
ISP1:35 pmIslip Long Island
10h 50m
2 stops
MHT12:25 amManchester
Dec 20
MHT2:30 pmManchester
6h 20m
1 stop
ISP8:50 pmIslip Long Island
$593
Find similar
Southwest
Dec 1
ISP1:35 pmIslip Long Island
10h 50m
2 stops
MHT12:25 amManchester
Dec 20
MHT5:25 amManchester
9h 15m
2 stops
ISP2:40 pmIslip Long Island
$631
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Manchester, 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 November 26, 2025.
Use the filters below to find and compare flights from Islip, New York to Manchester, New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Tue 12/9

8:29 pm-6:56 pm

1 stop22h 27m

Manchester

Sat 12/13

7:36 pm-9:58 am

2 stops14h 22m

$314

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Tue 12/9

8:29 pm-6:56 pm

1 stop22h 27m

Manchester

Sat 12/13

7:36 pm-10:20 am

1 stop14h 44m

$349

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 1/31

11:50 am-10:43 am

1 stop22h 53m

Manchester

Wed 2/4

9:55 am-6:55 pm

1 stop9h 00m

$515

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 1/31

7:35 pm-10:43 am

2 stops15h 08m

Manchester

Wed 2/4

9:55 am-6:55 pm

1 stop9h 00m

$561

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Wed 4/1

11:40 am-7:15 pm

1 stop7h 35m

$382

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Islip, New York to Manchester, 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 day to depart on your flight to Manchester, New Hampshire?

Our data shows that Sunday is the least expensive day to fly to Manchester, New Hampshire. Tickets to fly out on this day can be as low as $207. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Manchester, New Hampshire on Monday is $407.

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

Our most recent data shows that the best time of day to fly to Manchester, New Hampshire is in the evening. Flights from Islip, New York to Manchester, New Hampshire during this time can be as low as $164. Flights in the morning are often more expensive with an average ticket price of $328.

When to book flights from Islip, New York to Manchester, New Hampshire

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Manchester, New Hampshire according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Manchester, New Hampshire (ISP to MHT) flight deals and tips

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

Fastest flight time

22h 27m

Direct flights

None
The fastest flight from Islip, New York to Manchester, New Hampshire takes 22h 27m
There are no direct flights from Islip, New York to Manchester, New Hampshire. There are no popular flight routes from Islip, New York to Manchester, New Hampshire.
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  • How far is Islip Long Island to Manchester by plane?

    The distance between Islip Long Island and Manchester is about 180.6 mi. 15h 08m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Islip Long Island Airport to Manchester Airport?

    Prices for flights from Islip Long Island Airport to Manchester Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Manchester Airport?

    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 Manchester Airport.

  • What documentation or ID do you need to fly to Manchester Airport?

    The travel and health documents you'll need for your trip to Manchester Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Manchester Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Keene

Why use momondo?

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

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 Manchester for you.

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

Flights from Islip to Manchester 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 Manchester?

Once you have performed a search for Islip to Manchester flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Manchester from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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