How far in advance should I book a flight from Idaho to Islip, New York?

Find a great deal and save up to 90% by booking at least 38 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Idaho to Islip, New York within the next two weeks, with the cheapest ticket starting at $445.

What is the cheapest month to fly from Idaho to Islip, New York?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Islip, New York. Flights to Islip, New York from Idaho in January are about $451 on average during January, but can be found for as low as $263.

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

When flying from Idaho 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.

What airport do you fly into for flights to Islip from Idaho?

Islip Long Island (ISP) is the airport you will fly into if you book a flight from Idaho to Islip. It is only a 7.2 mi journey from Long Island (ISP) to Islip’s city center.

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

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

How can I find direct flights from Idaho to Islip?

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

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

Yes. Cheapflights offers flight deals from Idaho 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.

$361+ Flights from Idaho to Islip, NY

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Cheap flight deals from Idaho to Islip

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$361 (Southwest)
Popular in	December
Cheapest in	January
Average price	$372

Provider with most accurate pricing for Boise Air Term. Gowen Fld-New York (NYC) flight deals.

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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-New York (NYC) flights.

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From Idaho to Islip Long Island

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Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Idaho to Islip

Cheapest flights from Idaho to Islip
Explore the most affordable flight options available from Idaho to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.

Tue 8/127:25 amBOI - ISP

2 stops12h 40mSouthwest

Mon 8/183:05 pmISP - BOI

2 stops11h 00mSouthwest

Deal found 4/3

$361

Best flights from Idaho to Islip
Discover carefully curated flight deals from Idaho to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 4, 2025.

Tue 8/127:25 amBOI - ISP

2 stops12h 40mSouthwest

Mon 8/183:05 pmISP - BOI

2 stops11h 00mSouthwest

Deal found 4/3

$361

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoiseIslip

BOI - ISP

BOIISP

Boise Air Term. Gowen Fld

Tue 8/12

7:25 am-10:05 pm

2 stops12h 40m

Islip Long Island

Mon 8/18

3:05 pm-12:05 am

2 stops11h 00m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Best time to book a flight from Idaho to Islip

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

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

Currently, January is the cheapest month in which you can book a flight from Idaho to Islip, New York (average of $108). Flying from Idaho 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.

Rainfall in Islip 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

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

Southwest

8.0

Very good

4,276 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,276 reviews

Southwest

8.0

Very good

4,276 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airport do you fly into for flights to Islip from Idaho?
Islip Long Island (ISP) is the airport you will fly into if you book a flight from Idaho to Islip. It is only a 7.2 mi journey from Long Island (ISP) to Islip’s city center.
Can I find deals for flights from Idaho to Islip that include hotel bookings?
Yes. In addition to deals on Idaho to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Islip.
Can I find deals for business class flights from Idaho to Islip?
Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from Idaho to Islip, New York (average of $108). Flying from Idaho 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.

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$361+ Cheap flights from Idaho to Islip, NY (ISP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Idaho to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Idaho to Islip

Keep the following information in mind while searching for Idaho to Islip flight deals. Data was last updated April 4, 2025.

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Most trusted provider

Round-trip from

Popular in

Cheapest in

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Find flight deals from Idaho to Islip

Cheapest flights from Idaho to IslipExplore the most affordable flight options available from Idaho to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.

Explore the most affordable flight options available from Idaho to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to Islip that are best for you.

Best time to book a flight from Idaho to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Idaho with our price prediction graph.

Cheapflights Insights

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

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

Rainfall in Islip by month

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

Temperature in Islip by month

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

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 April 4, 2025.

Related info for your journey

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

What airport do you fly into for flights to Islip from Idaho?

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

How can I find direct flights from Idaho to Islip?

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

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

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Cheapest flights from Idaho to Islip
Explore the most affordable flight options available from Idaho to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.