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Cheap flights from Islip, New York to Boston from $140

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 6/9. 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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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.
Southwest Logo
5:55 pm - 12:25 am
ISP
-
BOS
6h 30m
1 stop
Southwest Logo
5:35 am - 12:00 pm
BOS
-
ISP
6h 25m
1 stop
$347Southwest
Fri, Oct 16 - Fri, Oct 23
Southwest Logo
5:50 pm - 12:05 am
ISP
-
BOS
6h 15m
1 stop
Southwest Logo
9:40 pm - 8:20 am
BOS
-
ISP
10h 40m
1 stop
$352Southwest
Thu, Jun 25 - Sun, Jun 28
Southwest Logo
5:35 pm - 11:35 pm
ISP
-
BOS
6h 00m
1 stop
Southwest Logo
5:10 am - 11:35 am
BOS
-
ISP
6h 25m
1 stop
$357Southwest
Sat, Jun 20 - Sat, Jun 27
Southwest Logo
3:05 pm - 12:15 am
ISP
-
BOS
9h 10m
2 stops
Southwest Logo
6:45 pm - 11:15 pm
BOS
-
ISP
4h 30m
1 stop
$362Southwest
Fri, Jul 17 - Sat, Jul 18
Southwest Logo
2:45 pm - 6:20 pm
ISP
-
BOS
3h 35m
1 stop
Southwest Logo
7:50 pm - 11:35 pm
BOS
-
ISP
3h 45m
1 stop
$367Southwest
Sat, Jun 20 - Mon, Jun 22
Southwest Logo
6:00 am - 12:10 pm
ISP
-
BOS
6h 10m
1 stop
Southwest Logo
8:55 am - 4:00 pm
BOS
-
ISP
7h 05m
1 stop
$372Southwest
Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
5:27 pm - 11:05 am
ISP
-
BOS
17h 38m
1 stop
Multiple Airlines Logo
8:47 am - 1:28 pm
BOS
-
ISP
4h 41m
1 stop
$375Multiple Airlines
Tue, Aug 18 - Fri, Aug 21
Southwest Logo
12:15 pm - 11:15 pm
ISP
-
BOS
11h 00m
2 stops
Southwest Logo
5:45 am - 11:50 am
BOS
-
ISP
6h 05m
1 stop
$378Southwest
Sat, Jun 20 - Mon, Jun 22
Southwest Logo
6:00 am - 12:10 pm
ISP
-
BOS
6h 10m
1 stop
Southwest Logo
7:50 pm - 11:35 pm
BOS
-
ISP
3h 45m
1 stop
$387Southwest
Wed, Jun 10 - Fri, Jun 12
Southwest Logo
3:05 pm - 12:10 am
ISP
-
BOS
9h 05m
2 stops
Southwest Logo
5:30 am - 11:45 am
BOS
-
ISP
6h 15m
1 stop
$388Southwest
Thu, Jun 25 - Sun, Jun 28

Cape Air flights from Islip, New York to Boston

Our best Cape Air deals on Islip, New York to Boston flight tickets
Cape Air
Jun 16
ISP10:00 amIslip Long Island
1h 30m
BOS11:30 amBoston Logan Intl
Jun 18
BOS11:55 amBoston Logan Intl
1h 35m
ISP1:30 pmIslip Long Island
$499
Cape Air
Oct 16
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Oct 23
BOS6:19 pmBoston Logan Intl
1h 26m
ISP7:45 pmIslip Long Island
$504
Cape Air
Jun 11
ISP4:45 pmIslip Long Island
1h 30m
BOS6:15 pmBoston Logan Intl
Jun 15
BOS9:21 amBoston Logan Intl
1h 35m
ISP10:56 amIslip Long Island
$505

JetBlue flights from Islip, New York to Boston

Our best JetBlue deals on Islip, New York to Boston flight tickets
JetBlue
Jun 9
ISP12:30 pmIslip Long Island
10h 57m
1 stop
BOS11:27 pmBoston Logan Intl
Jun 16
BOS12:30 pmBoston Logan Intl
10h 27m
1 stop
ISP10:57 pmIslip Long Island
$501
JetBlue
Sep 1
ISP5:00 pmIslip Long Island
7h 19m
1 stop
BOS12:19 amBoston Logan Intl
Sep 2
BOS1:28 pmBoston Logan Intl
9h 49m
1 stop
ISP11:17 pmIslip Long Island
$513
JetBlue
Aug 18
ISP5:00 pmIslip Long Island
7h 19m
1 stop
BOS12:19 amBoston Logan Intl
Aug 25
BOS12:30 pmBoston Logan Intl
10h 26m
1 stop
ISP10:56 pmIslip Long Island
$533

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 May 25, 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

Cheapest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 10/16

5:55 pm-12:25 am

1 stop6h 30m

Boston Logan Intl

Fri 10/23

5:35 am-12:00 pm

1 stop6h 25m

$347

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 6/25

5:50 pm-12:05 am

1 stop6h 15m

Boston Logan Intl

Sun 6/28

9:40 pm-8:20 am

1 stop10h 40m

$352

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 6/20

5:35 pm-11:35 pm

1 stop6h 00m

Boston Logan Intl

Sat 6/27

5:10 am-11:35 am

1 stop6h 25m

$357

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 7/17

3:05 pm-12:15 am

2 stops9h 10m

Boston Logan Intl

Sat 7/18

6:45 pm-11:15 pm

1 stop4h 30m

$362
Quickest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 6/20

2:45 pm-6:20 pm

1 stop3h 35m

Boston Logan Intl

Mon 6/22

7:50 pm-11:35 pm

1 stop3h 45m

$367

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 6/17

6:00 am-12:10 pm

1 stop6h 10m

Boston Logan Intl

Wed 6/24

8:55 am-4:00 pm

1 stop7h 05m

$372

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 8/18

5:27 pm-11:05 am

1 stop17h 38m

Boston Logan Intl

Fri 8/21

8:47 am-1:28 pm

1 stop4h 41m

$375

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 6/20

12:15 pm-11:15 pm

2 stops11h 00m

Boston Logan Intl

Mon 6/22

5:45 am-11:50 am

1 stop6h 05m

$378

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 6/10

6:00 am-12:10 pm

1 stop6h 10m

Boston Logan Intl

Fri 6/12

7:50 pm-11:35 pm

1 stop3h 45m

$387

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 6/25

3:05 pm-12:10 am

2 stops9h 05m

Boston Logan Intl

Sun 6/28

5:30 am-11:45 am

1 stop6h 15m

$388

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 typical price of a round-trip flight between Islip, New York and Boston?

What is the cheapest month to fly to Boston?

In general, February 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 $0. If you aren’t able to travel during the month of February, then book flights to Boston from Islip, New York during July instead. Flights to Boston in July, while not as cheap as those in February, still average around $408.

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 $363. 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 $512.

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 $396. 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 $539 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, New York to Boston flights?

There is only 1 cabin class available to choose from on Islip, New York to Boston 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 9% 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

$249

Fastest flight time

1h 30m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Islip, New York in the past 72 hours is $249. The best round-trip flight deal from Islip, New York to Boston found on momondo in the last 72 hours is $530.
The fastest flight from Islip, New York to Boston takes 1h 30m
Direct flights go from Islip, New York to Boston every day.
There is 1 airport in Boston. From Islip, New York there are direct flights to Boston Logan Intl (BOS).
Search flight deals

Frequently asked questions about flying from Islip, New York to Boston

  • 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 30m.

  • 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
SouthwestPriceFrom $174Free CancellationRating
7.9
4,265 reviews
Search Southwest flights
Cape AirPriceFrom $497Free CancellationRating
9.3
33 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
Kennebunkport
Cambridge
Plymouth
South Yarmouth
Gloucester
Narragansett
Falmouth
Brockton
Warwick
Chatham
Sturbridge
Dennis Port
Laconia
Revere

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

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