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Islip

$128+ Cheap flights from Boston to Islip, NY (BOS - ISP)

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ISP
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Boston to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Islip (ISP). 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 June 12, 2025.

Round-trip from

$255
(Southwest)

One-way from

$128
(Southwest)

Popular in

August

Cheapest in

September

Average price

$276
From Boston Logan Intl to Islip Long Island
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One-way flight from Boston Logan Intl to Islip Long Island
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Highest demand for flights based on searches. 13% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Boston to Islip

Cheapest flights from Boston to Islip
Explore the most affordable flight options available from Boston to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/11. 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.
Mon 8/115:35 amBOS - ISP
1 stop6h 25mSouthwest
Wed 8/2012:30 pmISP - BOS
1 stop4h 35mSouthwest
Deal found 6/11$255
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:00 amBOS - ISP
1 stop7h 41mFrontier
Wed 6/254:45 pmISP - BOS
1 stop7h 58mFrontier
Deal found 6/10$307
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amBOS - ISP
1 stop8h 44mJetBlue
Wed 9/173:39 pmISP - BOS
1 stop6h 50mJetBlue
Deal found 6/12$383
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/59:18 amBOS - ISP
1 stop25h 19mMultiple Airlines
Sun 9/77:30 amISP - BOS
Nonstop1h 27mMultiple Airlines
Deal found 6/11$448
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/39:27 amBOS - ISP
Nonstop1h 31mCape Air
Mon 7/74:33 pmISP - BOS
Nonstop1h 27mCape Air
Deal found 6/10$470

Cheapflights Fare Finder

Customize your flight search to find flights from Boston to Islip 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 June 12, 2025.
Use the filters below to find and compare flights from Boston to Islip that are best for you.

Fly from

Boston

Fly to

Islip

Route

Depart

Return

Price

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 8/11

5:35 am-12:00 pm

1 stop6h 25m

Islip Long Island

Wed 8/20

12:30 pm-5:05 pm

1 stop4h 35m

$255

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Tue 6/24

8:00 am-3:41 pm

1 stop7h 41m

Islip Long Island

Wed 6/25

4:45 pm-12:43 am

1 stop7h 58m

$307

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Tue 9/16

6:00 am-2:44 pm

1 stop8h 44m

Islip Long Island

Wed 9/17

3:39 pm-10:29 pm

1 stop6h 50m

$383

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Fri 9/5

9:18 am-10:37 am

1 stop25h 19m

Islip Long Island

Sun 9/7

7:30 am-8:57 am

Nonstop1h 27m

$448

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 7/3

9:27 am-10:58 am

Nonstop1h 31m

Islip Long Island

Mon 7/7

4:33 pm-6:00 pm

Nonstop1h 27m

$470

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 8/14

6:55 pm-10:55 pm

1 stop4h 00m

$128

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 7/3

9:27 am-10:58 am

Nonstop1h 31m

$210

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Mon 9/22

6:00 am-2:44 pm

1 stop8h 44m

$212

BostonIslip

BOS - ISP

BOSISP

Boston Logan Intl

Thu 7/3

3:26 pm-3:19 pm

3 stops23h 53m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from Boston to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Boston 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 Boston to Islip

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

Currently, January is the cheapest month in which you can book a flight from Boston to Islip, New York (average of $108). Flying from Boston to Islip, New York in November is currently the most expensive (average of $213). 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 BOS to ISP?

Find hourly flight availability from Boston to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Boston to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from Boston to Islip, such as Southwest, JetBlue and Frontier. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Frontier
5.9
Fair
3,295 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

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

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

    Flying on Southwest is currently your cheapest option to Islip, New York, with prices starting at $255. Additional round-trip tickets that might be worth considering are offered by Frontier and Cape Air, with the lowest prices starting at $307 and $452, respectively. You may be able to fly from Boston to Islip, New York for 28% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boston to Islip, New York one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $128. Cape Air flights start at $210 while deals on JetBlue start at $212 one-way.

  • What are the most reliable airlines from Boston to Islip, New York?

    The top 3 most reliable airlines when flying from Boston to Islip, New York are Qatar Airways (0%), Etihad Airways (0%) and JetBlue (0%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Islip 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 Boston to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Boston to Islip, New York (average of $108). Flying from Boston to Islip, New York in November is currently the most expensive (average of $213). 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

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Alternative routes for Boston to Islip

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Top 2 airlines flying from Boston to Islip

Discover the top 2 airlines that operate flights from Boston to Islip. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$77Average$238FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$258Average$341FlexibilityNo cancel feeOn-time63%

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