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Cheap flights from Islip, New York to Boston from $320

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 Boston departing on 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Islip, New York to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
4:05 pm - 10:30 pm
ISP
-
MHT
6h 25m
1 stop
Southwest Logo
6:05 am - 9:55 am
MHT
-
ISP
3h 50m
1 stop
$357Southwest
Fri, Sep 25 - Sun, Sep 27
Southwest Logo
10:20 am - 9:30 pm
ISP
-
MHT
11h 10m
2 stops
Southwest Logo
6:05 am - 9:55 am
MHT
-
ISP
3h 50m
1 stop
$362Southwest
Fri, Sep 25 - Sun, Sep 27
Southwest Logo
12:35 pm - 9:30 pm
ISP
-
MHT
8h 55m
2 stops
Southwest Logo
7:10 am - 3:55 pm
MHT
-
ISP
8h 45m
2 stops
$367Southwest
Fri, Sep 25 - Sun, Sep 27
Breeze Airways Logo
11:57 am - 11:45 am
ISP
-
MHT
23h 48m
1 stop
Breeze Airways Logo
9:51 am - 7:09 pm
MHT
-
ISP
33h 18m
2 stops
$369Breeze Airways
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
5:30 am - 12:15 pm
ISP
-
MHT
6h 45m
1 stop
Southwest Logo
5:45 am - 12:05 pm
MHT
-
ISP
6h 20m
1 stop
$377Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
10:55 am - 5:35 pm
ISP
-
MHT
6h 40m
1 stop
Southwest Logo
6:05 am - 9:55 am
MHT
-
ISP
3h 50m
1 stop
$459Southwest
Wed, Aug 12 - Sun, Aug 16
Southwest Logo
10:55 am - 9:10 pm
ISP
-
MHT
10h 15m
2 stops
Southwest Logo
6:05 am - 9:55 am
MHT
-
ISP
3h 50m
1 stop
$464Southwest
Wed, Aug 12 - Sun, Aug 16
Southwest Logo
6:10 am - 9:40 am
ISP
-
MHT
3h 30m
1 stop
Southwest Logo
12:45 pm - 4:25 pm
MHT
-
ISP
3h 40m
1 stop
$489Southwest
Mon, Aug 10 - Fri, Aug 14
Southwest Logo
6:10 am - 9:40 am
ISP
-
MHT
3h 30m
1 stop
Southwest Logo
8:00 am - 4:25 pm
MHT
-
ISP
8h 25m
2 stops
$494Southwest
Mon, Aug 10 - Fri, Aug 14
Southwest Logo
1:15 pm - 9:50 pm
ISP
-
MHT
8h 35m
2 stops
Southwest Logo
8:00 am - 4:25 pm
MHT
-
ISP
8h 25m
2 stops
$598Southwest
Mon, Aug 10 - Fri, Aug 14

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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
Sep 25
ISP4:05 pmIslip Long Island
6h 25m
1 stop
MHT10:30 pmManchester
Sep 27
MHT6:05 amManchester
3h 50m
1 stop
ISP9:55 amIslip Long Island
$357
Southwest
Sep 25
ISP10:20 amIslip Long Island
11h 10m
2 stops
MHT9:30 pmManchester
Sep 27
MHT6:05 amManchester
3h 50m
1 stop
ISP9:55 amIslip Long Island
$362
Southwest
Sep 25
ISP12:35 pmIslip Long Island
8h 55m
2 stops
MHT9:30 pmManchester
Sep 27
MHT7:10 amManchester
8h 45m
2 stops
ISP3:55 pmIslip Long Island
$367

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
Aug 22
ISP11:57 amIslip Long Island
23h 48m
1 stop
MHT11:45 amManchester
Aug 29
MHT9:51 amManchester
33h 18m
2 stops
ISP7:09 pmIslip Long Island
$369
Breeze Airways
Sep 25
ISP11:52 amIslip Long Island
23h 46m
3 stops
MHT11:38 amManchester
Sep 27
MHT12:24 pmManchester
31h 35m
2 stops
ISP7:59 pmIslip Long Island
$814

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 July 30, 2026.
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

Cheapest round-trip

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 9/25

4:05 pm-10:30 pm

1 stop6h 25m

Manchester

Sun 9/27

6:05 am-9:55 am

1 stop3h 50m

$357

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 9/25

10:20 am-9:30 pm

2 stops11h 10m

Manchester

Sun 9/27

6:05 am-9:55 am

1 stop3h 50m

$362

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 9/25

12:35 pm-9:30 pm

2 stops8h 55m

Manchester

Sun 9/27

7:10 am-3:55 pm

2 stops8h 45m

$367

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 8/22

11:57 am-11:45 am

1 stop23h 48m

Manchester

Sat 8/29

9:51 am-7:09 pm

2 stops33h 18m

$369

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 8/22

5:30 am-12:15 pm

1 stop6h 45m

Manchester

Sat 8/29

5:45 am-12:05 pm

1 stop6h 20m

$377

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Wed 8/12

10:55 am-5:35 pm

1 stop6h 40m

Manchester

Sun 8/16

6:05 am-9:55 am

1 stop3h 50m

$459

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Wed 8/12

10:55 am-9:10 pm

2 stops10h 15m

Manchester

Sun 8/16

6:05 am-9:55 am

1 stop3h 50m

$464
Quickest round-trip

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 8/10

6:10 am-9:40 am

1 stop3h 30m

Manchester

Fri 8/14

12:45 pm-4:25 pm

1 stop3h 40m

$489

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 8/10

6:10 am-9:40 am

1 stop3h 30m

Manchester

Fri 8/14

8:00 am-4:25 pm

2 stops8h 25m

$494

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 8/10

1:15 pm-9:50 pm

2 stops8h 35m

Manchester

Fri 8/14

8:00 am-4:25 pm

2 stops8h 25m

$598

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Boston from

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 airline that flies from Islip Long Island to Manchester?

Southwest and Breeze Airways are the most popular carriers operating from Islip Long Island to Manchester

What airlines fly to Manchester, New Hampshire?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Manchester, New Hampshire from Islip, New York according to our data. United Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Manchester, New Hampshire. Keep in mind that there are 5 different airlines that fly to Manchester, New Hampshire on a routine basis, so you have a few additional options to choose from.

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

6h 25m

Direct flights

None
The fastest flight from Islip, New York to Manchester, New Hampshire takes 6h 25m
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.
Search flight deals

Frequently asked questions about flying from Islip, New York to Manchester, New Hampshire

  • How far is Islip Long Island to Manchester by plane?

    The distance between Islip Long Island and Manchester is about 180.6 mi. 6h 25m 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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