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$112+ Cheap flights from Islip, NY to Boston (ISP - BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BOS
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Islip to Boston

Cheapest flights from Islip to Boston
Explore the most affordable flight options available from Islip to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:33 am
ISP
-
BOS
1 stop12h 28m
Multiple Airlines
Sun 3/812:56 pm
BOS
-
ISP
1 stop24h 35m
Multiple Airlines
Deal found 2/8$264
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:50 am
ISP
-
BOS
1 stop23h 00m
Multiple Airlines
Sun 3/14:22 pm
BOS
-
ISP
1 stop15h 16m
Multiple Airlines
Deal found 2/10$270
This Kiwi.com deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:34 pm
ISP
-
BOS
1 stop20h 14m
Multiple Airlines
Sun 3/112:43 pm
BOS
-
ISP
1 stop18h 55m
Multiple Airlines
Deal found 2/7$283
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:33 am
ISP
-
BOS
1 stop12h 28m
Multiple Airlines
Sat 3/712:36 pm
BOS
-
ISP
2 stops29h 10m
Multiple Airlines
Deal found 2/8$285
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:33 am
ISP
-
BOS
1 stop12h 28m
Multiple Airlines
Thu 3/511:45 am
BOS
-
ISP
1 stop25h 02m
Multiple Airlines
Deal found 2/9$311
This Kiwi.com deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:20 pm
ISP
-
BOS
1 stop27h 09m
Multiple Airlines
Mon 3/303:00 pm
BOS
-
ISP
1 stop20h 14m
Multiple Airlines
Deal found 2/8$320
This Southwest deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:30 pm
ISP
-
BOS
1 stop4h 45m
Southwest
Mon 5/44:45 pm
BOS
-
ISP
1 stop6h 45m
Southwest
Deal found 2/8$327
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:34 pm
ISP
-
BOS
1 stop20h 14m
Multiple Airlines
Wed 3/44:22 pm
BOS
-
ISP
1 stop22h 17m
Multiple Airlines
Deal found 2/10$329

Find flight deals from Islip to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$260
(Kiwi.com)

One-way from

$112
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$270
Provider with most accurate pricing for Islip Long Island-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Boston Logan Intl flights.
Search Deals
From Islip Long Island to Boston Logan Intl
Search Deals
One-way flight from Islip Long Island to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip 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, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Islip to Boston that are best for you.

Fly from

Islip

Fly to

Boston

Route

Depart

Return

Price

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 2/25

9:33 am-11:44 pm

2 stops14h 11m

Boston Logan Intl

Sun 3/1

4:22 pm-7:38 am

1 stop15h 16m

$293

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 3/10

11:59 am-1:55 pm

1 stop25h 56m

Boston Logan Intl

Tue 3/17

9:45 am-11:10 am

2 stops25h 25m

$293

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 2/27

2:31 pm-10:50 am

1 stop20h 19m

Boston Logan Intl

Sun 3/1

12:30 pm-7:38 am

1 stop19h 08m

$293

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 4/22

12:30 pm-5:15 pm

1 stop4h 45m

Boston Logan Intl

Mon 5/4

4:45 pm-11:30 pm

1 stop6h 45m

$327

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 5/23

4:40 pm-9:05 pm

1 stop4h 25m

Boston Logan Intl

Mon 6/1

2:30 pm-8:25 pm

1 stop5h 55m

$327

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 4/28

12:30 pm-5:15 pm

1 stop4h 45m

Boston Logan Intl

Fri 5/1

4:45 pm-11:30 pm

1 stop6h 45m

$327

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 3/2

3:34 pm-11:48 am

1 stop20h 14m

Boston Logan Intl

Wed 3/4

4:22 pm-2:39 pm

1 stop22h 17m

$329

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 8/7

10:20 am-3:45 pm

1 stop5h 25m

Boston Logan Intl

Mon 8/10

9:40 am-4:25 pm

1 stop6h 45m

$337

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 3/6

6:00 am-11:44 pm

2 stops17h 44m

Boston Logan Intl

Mon 3/9

6:00 am-11:14 am

1 stop29h 14m

$377

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 3/6

6:00 am-11:44 pm

2 stops17h 44m

Boston Logan Intl

Sun 3/8

4:22 pm-12:33 pm

1 stop20h 11m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 18 results
1
2

Compare providers for flights from Islip to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Boston in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Boston

What is the cheapest month to book a flight from Islip, New York to Boston?

Currently, May is the cheapest month in which you can book a flight from Islip, New York to Boston (average of $63). Flying from Islip, New York to Boston in June is currently the most expensive (average of $150). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ISP to BOS?

Find hourly flight availability from Islip to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to Boston as you normally would.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated February 11, 2026.
See what other customers who have flown with Cape Air, Southwest, and JetBlue from Islip to Boston have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Cape Air
9.3
Wonderful
36 reviews

Boarding

9.1

Crew

9.5

Comfort

8.7

Overall

9.3

Entertainment

9.0

Food

8.8
Cape Air
9.3
Wonderful
36 reviews
Cape Air
9.3
Wonderful
36 reviews

Boarding

9.1

Crew

9.5

Comfort

8.7

Overall

9.3

Entertainment

9.0

Food

8.8
Southwest
8.0
Very good
4,280 reviews
Cape Air
9.3
Wonderful
36 reviews

Boarding

9.1

Crew

9.5

Comfort

8.7

Overall

9.3

Entertainment

9.0

Food

8.8
JetBlue
7.2
Good
2,896 reviews
Cape Air
9.3
Wonderful
36 reviews

Boarding

9.1

Crew

9.5

Comfort

8.7

Overall

9.3

Entertainment

9.0

Food

8.8

Related info for your journey

Find useful and relevant information for your journey from Islip to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Islip to Boston?

    If you book a flight from Islip to Boston, you will be flying from Long Island to Logan Intl. Flights to Boston Logan Intl (BOS) from Islip Long Island (ISP) take 1h 25m for a nonstop flight. There is 1 flight from Long Island to Boston per day from 3 airlines.

  • How long is the flight from Islip, New York to Boston?

    Airlines like Southwest fly from Islip, New York to Boston in about 4h 45m. The time it takes to get you to your destination can typically vary by up to . There are 153 mi between Islip, New York and Boston.

  • What are the cheapest airlines flying from Islip, New York to Boston round-trip?

    Our cheapest airline available from Islip, New York to Boston is JetBlue. Our recent data shows that you can find tickets from as low as $97 on this airline. Additional options worth looking into are Southwest and Cape Air, starting at $254 and $475 round-trip. Users have found that JetBlue is 76% cheaper than the other options available to this destination.

  • Can I find deals for flights from Islip to Boston that include hotel bookings?

    Yes. In addition to deals on Islip to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Boston.

  • Can I find deals for business class flights from Islip to Boston?

    Yes. Cheapflights offers flight deals from Islip to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Boston?

    Currently, May is the cheapest month in which you can book a flight from Islip, New York to Boston (average of $63). Flying from Islip, New York to Boston in June is currently the most expensive (average of $150). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Hampton Beach
Watertown
Seekonk
Brockton
Concord
Seabrook
Cranston
Lincoln
Warwick
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Islip to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Islip to Boston

Discover the top 3 airlines that operate flights from Islip to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$97Average$187FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$254Average$346FlexibilityNo cancel feeOn-time63%
Cape AirCheapest$475Average$520FlexibilityNo cancel feeOn-time63%

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