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Cheap flights from Islip, New York to Boston from $170

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 10/3. 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 Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
9:20 am - 2:10 pm
ISP
-
MHT
4h 50m
1 stop
Southwest Logo
9:10 am - 1:50 pm
MHT
-
ISP
4h 40m
1 stop
$330Southwest
Sat, May 23 - Tue, May 26
Southwest Logo
5:50 pm - 12:05 am
ISP
-
MHT
6h 15m
1 stop
Southwest Logo
5:45 am - 11:45 am
MHT
-
ISP
6h 00m
1 stop
$332Southwest
Fri, Jun 5 - Sun, Jun 7
Southwest Logo
5:30 am - 4:10 pm
ISP
-
MHT
10h 40m
2 stops
Southwest Logo
9:10 am - 1:50 pm
MHT
-
ISP
4h 40m
1 stop
$372Southwest
Sat, May 23 - Tue, May 26
Southwest Logo
5:50 pm - 12:05 am
ISP
-
MHT
6h 15m
1 stop
Southwest Logo
5:45 am - 4:40 pm
MHT
-
ISP
10h 55m
2 stops
$388Southwest
Fri, Jun 5 - Sun, Jun 7
Southwest Logo
5:30 am - 2:10 pm
ISP
-
MHT
8h 40m
2 stops
Southwest Logo
12:45 pm - 10:40 pm
MHT
-
ISP
9h 55m
2 stops
$417Southwest
Sat, May 23 - Tue, May 26
Southwest Logo
8:35 am - 12:35 pm
ISP
-
MHT
4h 00m
1 stop
Southwest Logo
4:40 pm - 11:30 pm
MHT
-
ISP
6h 50m
1 stop
$449Southwest
Mon, May 4 - Fri, May 8
Southwest Logo
8:35 am - 4:00 pm
ISP
-
MHT
7h 25m
2 stops
Southwest Logo
4:40 pm - 8:25 pm
MHT
-
ISP
3h 45m
1 stop
$454Southwest
Mon, May 4 - Fri, May 8
Southwest Logo
8:35 am - 4:00 pm
ISP
-
MHT
7h 25m
2 stops
Southwest Logo
1:10 pm - 11:30 pm
MHT
-
ISP
10h 20m
2 stops
$459Southwest
Mon, May 4 - Fri, May 8

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
May 23
ISP9:20 amIslip Long Island
4h 50m
1 stop
MHT2:10 pmManchester
May 26
MHT9:10 amManchester
4h 40m
1 stop
ISP1:50 pmIslip Long Island
$330
Southwest
Jun 5
ISP5:50 pmIslip Long Island
6h 15m
1 stop
MHT12:05 amManchester
Jun 7
MHT5:45 amManchester
6h 00m
1 stop
ISP11:45 amIslip Long Island
$332
Southwest
May 23
ISP5:30 amIslip Long Island
10h 40m
2 stops
MHT4:10 pmManchester
May 26
MHT9:10 amManchester
4h 40m
1 stop
ISP1:50 pmIslip Long Island
$372

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 April 24, 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
Quickest round-trip

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 5/23

9:20 am-2:10 pm

1 stop4h 50m

Manchester

Tue 5/26

9:10 am-1:50 pm

1 stop4h 40m

$330

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 6/5

5:50 pm-12:05 am

1 stop6h 15m

Manchester

Sun 6/7

5:45 am-11:45 am

1 stop6h 00m

$332

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 5/23

5:30 am-4:10 pm

2 stops10h 40m

Manchester

Tue 5/26

9:10 am-1:50 pm

1 stop4h 40m

$372

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Fri 6/5

5:50 pm-12:05 am

1 stop6h 15m

Manchester

Sun 6/7

5:45 am-4:40 pm

2 stops10h 55m

$388

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 5/23

5:30 am-2:10 pm

2 stops8h 40m

Manchester

Tue 5/26

12:45 pm-10:40 pm

2 stops9h 55m

$417

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 5/4

8:35 am-12:35 pm

1 stop4h 00m

Manchester

Fri 5/8

4:40 pm-11:30 pm

1 stop6h 50m

$449

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 5/4

8:35 am-4:00 pm

2 stops7h 25m

Manchester

Fri 5/8

4:40 pm-8:25 pm

1 stop3h 45m

$454

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Mon 5/4

8:35 am-4:00 pm

2 stops7h 25m

Manchester

Fri 5/8

1:10 pm-11:30 pm

2 stops10h 20m

$459
Cheapest one-way

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 10/3

12:00 pm-11:44 am

1 stop23h 44m

$170

IslipManchester

ISP - MHT

ISPMHT

Islip Long Island

Sat 10/3

6:00 am-4:10 pm

2 stops10h 10m

$179

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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 day to depart on your flight to Manchester, New Hampshire?

Our data shows that Monday is the least expensive day to fly to Manchester, New Hampshire. Tickets to fly out on this day can be as low as $137. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Manchester, New Hampshire on Sunday is $207.

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 15m

Direct flights

None
The fastest flight from Islip, New York to Manchester, New Hampshire takes 6h 15m
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 15m 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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