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Cheap flights from Islip, New York to Boston from $138

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 3/22. 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
0 bags

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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.
Multiple Airlines Logo
8:21 pm - 1:13 am
ISP
-
BOS
28h 52m2 stops
Multiple Airlines Logo
12:43 pm - 8:40 am
BOS
-
ISP
19h 57m1 stop
$188Multiple Airlines
א', פב​​​​​​​' 22 - ג', מרץ 3
Multiple Airlines Logo
8:33 am - 11:44 pm
ISP
-
BOS
15h 11m2 stops
Multiple Airlines Logo
12:43 pm - 7:38 am
BOS
-
ISP
18h 55m1 stop
$217Multiple Airlines
ו', פב​​​​​​​' 27 - א', מרץ 1
Multiple Airlines Logo
12:00 pm - 1:03 am
ISP
-
BOS
13h 03m2 stops
Multiple Airlines Logo
3:43 pm - 6:48 pm
BOS
-
ISP
27h 05m1 stop
$238Multiple Airlines
ג', ינו' 20 - ד', ינו' 21
Southwest Logo
6:00 am - 12:25 pm
ISP
-
BOS
6h 25m1 stop
Southwest Logo
5:50 pm - 9:55 pm
BOS
-
ISP
4h 05m1 stop
$244Southwest
ד', פב​​​​​​​' 11 - ד', פב​​​​​​​' 11
Multiple Airlines Logo
7:20 pm - 1:55 pm
ISP
-
BOS
18h 35m1 stop
Multiple Airlines Logo
4:22 pm - 7:38 am
BOS
-
ISP
15h 16m1 stop
$262Multiple Airlines
ו', פב​​​​​​​' 27 - א', מרץ 1
Southwest Logo
12:30 pm - 3:55 pm
ISP
-
BOS
3h 25m1 stop
Southwest Logo
7:25 pm - 11:30 pm
BOS
-
ISP
4h 05m1 stop
$272Southwest
ג', אפר' 21 - ה', אפר' 23
Southwest Logo
6:00 am - 10:00 am
ISP
-
BOS
4h 00m1 stop
Southwest Logo
11:40 am - 6:30 pm
BOS
-
ISP
6h 50m1 stop
$286Southwest
ה', אפר' 23 - ג', אפר' 28
Multiple Airlines Logo
8:21 pm - 10:01 pm
ISP
-
BOS
25h 40m1 stop
Multiple Airlines Logo
4:22 pm - 8:40 am
BOS
-
ISP
16h 18m1 stop
$290Multiple Airlines
א', פב​​​​​​​' 22 - ג', מרץ 3
Southwest Logo
6:00 am - 10:00 am
ISP
-
BOS
4h 00m1 stop
Southwest Logo
2:25 pm - 10:10 pm
BOS
-
ISP
7h 45m2 stops
$291Southwest
ה', אפר' 23 - ג', אפר' 28
Southwest Logo
5:55 pm - 12:05 am
ISP
-
BOS
6h 10m1 stop
Southwest Logo
7:10 pm - 10:50 pm
BOS
-
ISP
3h 40m1 stop
$335Southwest
ב', מרץ 23 - ג', מרץ 24

Cape Air flights from Islip, New York to Boston

Our best Cape Air deals on Islip, New York to Boston flight tickets
Cape Air
Jan 22
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Jan 22
BOS2:34 pmBoston Logan Intl
1h 36m
ISP4:10 pmIslip Long Island
$463
Find similar
Cape Air
Jan 20
ISP7:25 amIslip Long Island
1h 34m
BOS8:59 amBoston Logan Intl
Jan 20
BOS2:34 pmBoston Logan Intl
1h 36m
ISP4:10 pmIslip Long Island
$468
Find similar
Cape Air
Feb 3
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Feb 3
BOS2:34 pmBoston Logan Intl
1h 36m
ISP4:10 pmIslip Long Island
$489
Find similar

Southwest flights from Islip, New York to Boston

Our best Southwest deals on Islip, New York to Boston flight tickets
Southwest
Feb 11
ISP6:00 amIslip Long Island
6h 25m
1 stop
BOS12:25 pmBoston Logan Intl
Feb 11
BOS5:50 pmBoston Logan Intl
4h 05m
1 stop
ISP9:55 pmIslip Long Island
$244
Find similar
Southwest
Apr 21
ISP12:30 pmIslip Long Island
3h 25m
1 stop
BOS3:55 pmBoston Logan Intl
Apr 23
BOS7:25 pmBoston Logan Intl
4h 05m
1 stop
ISP11:30 pmIslip Long Island
$272
Find similar
Southwest
Apr 23
ISP6:00 amIslip Long Island
4h 00m
1 stop
BOS10:00 amBoston Logan Intl
Apr 28
BOS11:40 amBoston Logan Intl
6h 50m
1 stop
ISP6:30 pmIslip Long Island
$286
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Boston 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 ינואר 8, 2026.
Use the filters below to find and compare flights from Islip, New York to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

א' 2/22

8:21 pm-1:13 am

2 stops28h 52m

Boston Logan Intl

ג' 3/3

12:43 pm-8:40 am

1 stop19h 57m

$188

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ו' 2/27

8:33 am-11:44 pm

2 stops15h 11m

Boston Logan Intl

א' 3/1

12:43 pm-7:38 am

1 stop18h 55m

$217

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ג' 1/20

12:00 pm-1:03 am

2 stops13h 03m

Boston Logan Intl

ד' 1/21

3:43 pm-6:48 pm

1 stop27h 05m

$238

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ד' 2/11

6:00 am-12:25 pm

1 stop6h 25m

Boston Logan Intl

ד' 2/11

5:50 pm-9:55 pm

1 stop4h 05m

$244

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ו' 2/27

7:20 pm-1:55 pm

1 stop18h 35m

Boston Logan Intl

א' 3/1

4:22 pm-7:38 am

1 stop15h 16m

$262

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ג' 4/21

12:30 pm-3:55 pm

1 stop3h 25m

Boston Logan Intl

ה' 4/23

7:25 pm-11:30 pm

1 stop4h 05m

$272

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ה' 4/23

6:00 am-10:00 am

1 stop4h 00m

Boston Logan Intl

ג' 4/28

11:40 am-6:30 pm

1 stop6h 50m

$286

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

א' 2/22

8:21 pm-10:01 pm

1 stop25h 40m

Boston Logan Intl

ג' 3/3

4:22 pm-8:40 am

1 stop16h 18m

$290

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ה' 4/23

6:00 am-10:00 am

1 stop4h 00m

Boston Logan Intl

ג' 4/28

2:25 pm-10:10 pm

2 stops7h 45m

$291

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

ב' 3/23

5:55 pm-12:05 am

1 stop6h 10m

Boston Logan Intl

ג' 3/24

7:10 pm-10:50 pm

1 stop3h 40m

$335

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 Boston

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 month to fly to Boston?

In general, May is the cheapest month to fly from Islip, New York to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $157. If you aren’t able to travel during the month of May, then book flights to Boston from Islip, New York during June instead. Flights to Boston in June, while not as cheap as those in May, still average around $238.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Islip, New York to Boston is on a Friday when prices can be found for as low as $375. 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 Boston on Sunday is $589.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the morning. momondo users have found flights departing from Islip, New York to Boston in the morning for as low as $412. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around $595 per ticket.

What is the cheapest Islip Long Island to Boston Logan Intl flight route?

Fly from Islip Long Island to Boston Logan Intl for the best Islip Long Island - Boston Logan Intl flight prices

What cabin class options are available on Islip Long Island to Boston Logan Intl flights?

There is only 1 cabin class available to choose from on Islip Long Island to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Islip, New York to Boston flights?

You could potentially save up to 2% on your flight if you consider stops on a Islip, New York to Boston flight.

When to book flights from Islip, New York to Boston

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

Cheap Islip, New York to Boston (ISP to BOS) flight deals and tips

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

Best Price Found

$511

Fastest flight time

1h 25m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Boston

1 airport
The best flight deal from Islip, New York to Boston found on momondo in the last 72 hours is $511
The fastest flight from Islip, New York to Boston takes 1h 25m
Direct flights go from Islip, New York to Boston on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Boston. From Islip, New York there are direct flights to Boston Logan Intl (BOS).
Search flight deals

  • How far is Islip Long Island to Boston Logan Intl by plane?

    The distance between Islip Long Island and Boston Logan Intl is about 158.2 mi. In terms of flight time, this usually takes a little over 1h 25m.

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

    Prices for flights from Islip Long Island Airport to Boston Logan Intl Airport are updated daily.

  • How many operators does momondo search for flights from Islip Long Island Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Islip Long Island Airport to Boston Logan Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Islip, New York to Boston?

  • What is the most popular airline from Islip, New York to Boston?

Best airlines flying from Islip, New York to Boston

Compare and see reviews for airlines that fly from Islip, New York to Boston with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $97Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
Cape AirPriceFrom $497Free CancellationRating
9.3
36 reviews
Search Cape Air flights

  • Cape Air Flights From Islip, New York to Boston

    Cape Air is one of the most popular airlines flying from Islip, New York to Boston, operating 21 flights/week on average for this route. A good Cape Air flight deal for Islip, New York to Boston starts from $497 round-trip, up to an average price of $520. Our users have rated Cape Air at 9.3/10.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Laconia
Brockton
Concord
Everett
Sturbridge
Warwick

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Boston. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Boston from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Boston?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boston from Islip.

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

If you are not ready to book a flight from Islip to Boston now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Boston and let you know when they change.

An easier way to manage your Boston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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