Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Islip, New York to Boston from $174

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 3/6. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
9:33 am - 10:50 am
ISP
-
BOS
25h 17m
2 stops
Multiple Airlines Logo
4:22 pm - 2:39 pm
BOS
-
ISP
22h 17m
1 stop
$177Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
11:50 am - 10:50 am
ISP
-
BOS
23h 00m
1 stop
Multiple Airlines Logo
4:22 pm - 2:39 pm
BOS
-
ISP
22h 17m
1 stop
$179Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
11:50 am - 10:50 am
ISP
-
BOS
23h 00m
1 stop
Multiple Airlines Logo
6:10 pm - 2:39 pm
BOS
-
ISP
20h 29m
2 stops
$205Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
9:33 am - 11:44 pm
ISP
-
BOS
14h 11m
2 stops
Multiple Airlines Logo
4:22 pm - 11:06 am
BOS
-
ISP
18h 44m
1 stop
$232Multiple Airlines
Wed, Feb 25 - Fri, Feb 27
Multiple Airlines Logo
9:33 am - 10:01 pm
ISP
-
BOS
12h 28m
1 stop
Multiple Airlines Logo
4:22 pm - 11:06 am
BOS
-
ISP
18h 44m
1 stop
$241Multiple Airlines
Wed, Feb 25 - Fri, Feb 27
Multiple Airlines Logo
7:26 pm - 11:41 am
ISP
-
BOS
40h 15m
2 stops
Multiple Airlines Logo
4:23 pm - 12:33 pm
BOS
-
ISP
20h 10m
1 stop
$285Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Multiple Airlines Logo
11:59 am - 1:55 pm
ISP
-
BOS
25h 56m
1 stop
Multiple Airlines Logo
12:56 pm - 4:47 pm
BOS
-
ISP
27h 51m
1 stop
$298Multiple Airlines
Tue, Feb 24 - Mon, May 18
Multiple Airlines Logo
4:34 pm - 9:33 pm
ISP
-
BOS
28h 59m
1 stop
Multiple Airlines Logo
4:23 pm - 12:33 pm
BOS
-
ISP
20h 10m
1 stop
$311Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Southwest Logo
4:30 pm - 9:50 pm
ISP
-
BOS
5h 20m
1 stop
Southwest Logo
6:40 am - 11:50 am
BOS
-
ISP
5h 10m
1 stop
$327Southwest
Fri, May 8 - Sun, May 10
Multiple Airlines Logo
8:45 pm - 11:19 pm
ISP
-
BOS
26h 34m
2 stops
Multiple Airlines Logo
4:22 pm - 1:13 pm
BOS
-
ISP
20h 51m
1 stop
$330Multiple Airlines
Mon, Feb 9 - Tue, Feb 17

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 29
ISP12:30 pmIslip Long Island
1h 34m
BOS2:04 pmBoston Logan Intl
Feb 1
BOS9:30 amBoston Logan Intl
1h 35m
ISP11:05 amIslip Long Island
$503
Cape Air
May 8
ISP12:30 pmIslip Long Island
1h 34m
BOS2:04 pmBoston Logan Intl
May 10
BOS9:30 amBoston Logan Intl
1h 35m
ISP11:05 amIslip Long Island
$505
Cape Air
Feb 9
ISP9:59 amIslip Long Island
1h 25m
BOS11:24 amBoston Logan Intl
Feb 11
BOS5:18 pmBoston Logan Intl
1h 26m
ISP6:44 pmIslip Long Island
$506

Southwest flights from Islip, New York to Boston

Our best Southwest deals on Islip, New York to Boston flight tickets
Southwest
Mar 31
ISP5:45 amIslip Long Island
5h 05m
1 stop
BOS10:50 amBoston Logan Intl
Apr 14
BOS2:25 pmBoston Logan Intl
4h 05m
1 stop
ISP6:30 pmIslip Long Island
$327
Southwest
Feb 27
ISP5:35 pmIslip Long Island
6h 05m
1 stop
BOS11:40 pmBoston Logan Intl
Feb 28
BOS5:40 amBoston Logan Intl
6h 25m
1 stop
ISP12:05 pmIslip Long Island
$337
Southwest
Feb 28
ISP5:30 amIslip Long Island
6h 35m
1 stop
BOS12:05 pmBoston Logan Intl
Mar 1
BOS5:35 amBoston Logan Intl
6h 50m
1 stop
ISP12:25 pmIslip Long Island
$347

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 January 29, 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 2/25

9:33 am-10:50 am

2 stops25h 17m

Boston Logan Intl

Wed 3/4

4:22 pm-2:39 pm

1 stop22h 17m

$177

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/25

11:50 am-10:50 am

1 stop23h 00m

Boston Logan Intl

Wed 3/4

4:22 pm-2:39 pm

1 stop22h 17m

$179

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/25

11:50 am-10:50 am

1 stop23h 00m

Boston Logan Intl

Wed 3/4

6:10 pm-2:39 pm

2 stops20h 29m

$205

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/25

9:33 am-11:44 pm

2 stops14h 11m

Boston Logan Intl

Fri 2/27

4:22 pm-11:06 am

1 stop18h 44m

$232

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/25

9:33 am-10:01 pm

1 stop12h 28m

Boston Logan Intl

Fri 2/27

4:22 pm-11:06 am

1 stop18h 44m

$241

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 3/15

7:26 pm-11:41 am

2 stops40h 15m

Boston Logan Intl

Sun 3/22

4:23 pm-12:33 pm

1 stop20h 10m

$285

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 2/24

11:59 am-1:55 pm

1 stop25h 56m

Boston Logan Intl

Mon 5/18

12:56 pm-4:47 pm

1 stop27h 51m

$298

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 3/15

4:34 pm-9:33 pm

1 stop28h 59m

Boston Logan Intl

Sun 3/22

4:23 pm-12:33 pm

1 stop20h 10m

$311

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 5/8

4:30 pm-9:50 pm

1 stop5h 20m

Boston Logan Intl

Sun 5/10

6:40 am-11:50 am

1 stop5h 10m

$327

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 2/9

8:45 pm-11:19 pm

2 stops26h 34m

Boston Logan Intl

Tue 2/17

4:22 pm-1:13 pm

1 stop20h 51m

$330

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, 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 $374. 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 $570.

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 $406. 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 $575 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

Best Price Found

$580

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Boston

1 airport
The best flight deal from Islip, New York to Boston found on momondo in the last 72 hours is $580
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
2,892 reviews
Search JetBlue flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,267 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 17 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
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Brockton
Laconia
Sturbridge
Chatham
Warwick
Concord

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 2/28
Sat 3/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States