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Islip

$549+ Cheap flights from Boise to Islip, NY (BOI - 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — ISP
nov. 26 — déc. 31
mer. 11/26
mer. 12/3
1 adult, Economy
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Cheap flight deals from Boise to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 octobre 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

December

Cheapest in

January

Average price

$366
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Islip Long Island flights.
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Boise to Islip

Cheapest flights from Boise to Islip
Explore the most affordable flight options available from Boise to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 27, 2025.

This Southwest deal was found by Cheapflights users on 10/27. 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.
mar. 11/46:10 amBOI - ISP
2 stops13h 30mSouthwest
mar. 11/115:40 amISP - BOI
2 stops11h 25mSouthwest
Deal found 10/27$722

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 octobre 27, 2025.
Use the filters below to find and compare flights from Boise to Islip that are best for you.

Fly from

Boise

Fly to

Islip

Route

Depart

Return

Price

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

lun. 11/17

8:50 pm-11:04 am

2 stops12h 14m

$549

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

jeu. 12/18

9:50 pm-11:04 am

2 stops11h 14m

$666

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

sam. 11/1

6:28 am-7:45 pm

2 stops11h 17m

$751

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

mar. 12/23

9:50 pm-11:04 am

2 stops11h 14m

$758

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

sam. 12/20

9:50 pm-11:04 am

2 stops11h 14m

$758

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

mar. 11/25

9:42 pm-11:04 am

2 stops11h 22m

$862

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

mer. 11/5

6:28 am-7:45 pm

2 stops11h 17m

$939

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

sam. 11/29

6:09 am-7:45 pm

2 stops11h 36m

$1,738

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Boise to Islip

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 Boise to Islip in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Boise-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boise-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boise-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams 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 Boise-Islip, New York 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 Boise to Islip

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

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

Currently, September is the cheapest month in which you can book a flight from Boise to Islip, New York (average of $115). Flying from Boise to Islip, New York in November is currently the most expensive (average of $276). 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.

Related info for your journey

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

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Boise to Islip, New York (average of $115). Flying from Boise to Islip, New York in November is currently the most expensive (average of $276). 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 Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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