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Cheap flights from Islip, New York to Boston from $108

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 4/19. 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
11:50 am - 11:40 am
ISP
-
BOS
23h 50m
1 stop
Multiple Airlines Logo
5:49 pm - 10:13 am
BOS
-
ISP
40h 24m
2 stops
$259Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
1:22 pm - 11:41 am
ISP
-
BOS
22h 19m
2 stops
Multiple Airlines Logo
12:56 pm - 11:10 am
BOS
-
ISP
22h 14m
1 stop
$261Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
11:50 am - 11:40 am
ISP
-
BOS
23h 50m
1 stop
Multiple Airlines Logo
4:23 pm - 4:13 pm
BOS
-
ISP
23h 50m
1 stop
$265Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
1:22 pm - 11:48 am
ISP
-
BOS
22h 26m
1 stop
Multiple Airlines Logo
12:56 pm - 11:10 am
BOS
-
ISP
22h 14m
1 stop
$303Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Southwest Logo
4:30 pm - 9:50 pm
ISP
-
BOS
5h 20m
1 stop
Southwest Logo
2:25 pm - 6:30 pm
BOS
-
ISP
4h 05m
1 stop
$327Southwest
Thu, May 14 - Wed, May 20
Frontier Logo
4:07 pm - 12:51 am
ISP
-
BOS
32h 44m
2 stops
Frontier Logo
11:16 am - 9:08 am
BOS
-
ISP
21h 52m
1 stop
$329Frontier
Thu, May 14 - Wed, May 20
Southwest Logo
6:55 am - 5:15 pm
ISP
-
BOS
10h 20m
2 stops
Southwest Logo
5:45 am - 11:50 am
BOS
-
ISP
6h 05m
1 stop
$332Southwest
Tue, Jun 2 - Thu, Jun 4
Southwest Logo
12:30 pm - 10:30 pm
ISP
-
BOS
10h 00m
2 stops
Southwest Logo
1:20 pm - 11:40 pm
BOS
-
ISP
10h 20m
2 stops
$337Southwest
Tue, Jun 2 - Thu, Jun 4
Multiple Airlines Logo
7:20 pm - 10:29 pm
ISP
-
BOS
27h 09m
1 stop
Multiple Airlines Logo
3:00 pm - 11:14 am
BOS
-
ISP
20h 14m
1 stop
$339Multiple Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
7:20 pm - 10:29 pm
ISP
-
BOS
27h 09m
1 stop
Multiple Airlines Logo
3:00 pm - 11:14 am
BOS
-
ISP
20h 14m
1 stop
$344Multiple Airlines
Mon, Mar 16 - Mon, Mar 23

Cape Air flights from Islip, New York to Boston

Our best Cape Air deals on Islip, New York to Boston flight tickets
Cape Air
Mar 17
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Mar 19
BOS5:18 pmBoston Logan Intl
1h 26m
ISP6:44 pmIslip Long Island
$503
Cape Air
Mar 14
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Mar 18
BOS5:18 pmBoston Logan Intl
1h 26m
ISP6:44 pmIslip Long Island
$506
Cape Air
Feb 27
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Feb 28
BOS5:18 pmBoston Logan Intl
1h 26m
ISP6:44 pmIslip Long Island
$565

Southwest flights from Islip, New York to Boston

Our best Southwest deals on Islip, New York to Boston flight tickets
Southwest
May 14
ISP4:30 pmIslip Long Island
5h 20m
1 stop
BOS9:50 pmBoston Logan Intl
May 20
BOS2:25 pmBoston Logan Intl
4h 05m
1 stop
ISP6:30 pmIslip Long Island
$327
Southwest
Jun 2
ISP6:55 amIslip Long Island
10h 20m
2 stops
BOS5:15 pmBoston Logan Intl
Jun 4
BOS5:45 amBoston Logan Intl
6h 05m
1 stop
ISP11:50 amIslip Long Island
$332
Southwest
Jun 2
ISP12:30 pmIslip Long Island
10h 00m
2 stops
BOS10:30 pmBoston Logan Intl
Jun 4
BOS1:20 pmBoston Logan Intl
10h 20m
2 stops
ISP11:40 pmIslip Long Island
$337

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 February 23, 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

Wed 3/18

11:50 am-11:40 am

1 stop23h 50m

Boston Logan Intl

Wed 3/25

5:49 pm-10:13 am

2 stops40h 24m

$259

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 3/9

1:22 pm-11:41 am

2 stops22h 19m

Boston Logan Intl

Fri 3/13

12:56 pm-11:10 am

1 stop22h 14m

$261

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 3/18

11:50 am-11:40 am

1 stop23h 50m

Boston Logan Intl

Wed 3/25

4:23 pm-4:13 pm

1 stop23h 50m

$265

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 3/9

1:22 pm-11:48 am

1 stop22h 26m

Boston Logan Intl

Fri 3/13

12:56 pm-11:10 am

1 stop22h 14m

$303

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 5/14

4:30 pm-9:50 pm

1 stop5h 20m

Boston Logan Intl

Wed 5/20

2:25 pm-6:30 pm

1 stop4h 05m

$327

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 5/14

4:07 pm-12:51 am

2 stops32h 44m

Boston Logan Intl

Wed 5/20

11:16 am-9:08 am

1 stop21h 52m

$329

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 6/2

6:55 am-5:15 pm

2 stops10h 20m

Boston Logan Intl

Thu 6/4

5:45 am-11:50 am

1 stop6h 05m

$332

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 6/2

12:30 pm-10:30 pm

2 stops10h 00m

Boston Logan Intl

Thu 6/4

1:20 pm-11:40 pm

2 stops10h 20m

$337

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 3/23

7:20 pm-10:29 pm

1 stop27h 09m

Boston Logan Intl

Mon 3/30

3:00 pm-11:14 am

1 stop20h 14m

$339

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 3/16

7:20 pm-10:29 pm

1 stop27h 09m

Boston Logan Intl

Mon 3/23

3:00 pm-11:14 am

1 stop20h 14m

$344

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 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 $373. 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 $556.

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 $403. 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 $560 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 13% 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

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Boston

1 airport
The fastest flight from Islip, New York to Boston takes 1h 25m
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

  • 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
2,898 reviews
Search JetBlue flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,300 reviews
Search Southwest flights
Cape AirPriceFrom $475Free 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 7 flights/week on average for this route. A good Cape Air flight deal for Islip, New York to Boston starts from $475 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
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Brockton
Laconia
Warwick
Nashua
Chatham
Sturbridge
Everett

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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