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.

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).

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Islip, New York?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 53 days in advance, which can save you up to 108% on flights from Houston George Bush Intcntl Airport to Islip, New York compared to booking the week you need them. Waiting 53 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $237. For sooner than that we have options available in the next 3 days from $409.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to Islip, New York?

January is one of the best times of the year to fly to Islip, New York from Houston George Bush Intcntl Airport. Prices for January average $241 per person but you can even find prices for as low as $97. The most expensive prices can be found in the month of December. Opting for a January flight can save you 22% on your journey compared to booking in December

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

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

What airport do you fly into for flights to Islip from Houston George Bush Intcntl?

Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Islip from Houston George Bush Intcntl. Booking flights from Houston George Bush Intcntl to Long Island (ISP) should be relatively easy as there are 0 daily inbound flights from Houston George Bush Intcntl from 0 different airlines.

Can I find deals for flights from George Bush Intcntl to Islip that include hotel bookings?

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

How can I find direct flights from George Bush Intcntl to Islip?

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

Can I find deals for business class flights from George Bush Intcntl to Islip?

Yes. Cheapflights offers flight deals from George Bush Intcntl 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.

$116+ Flights from Houston George Bush Intcntl Airport to Islip, NY

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Cheap flight deals from George Bush Intcntl to Islip

Round-trip from	$268 (FlightHub)
One-way from	$116 (FlightHub)
Popular in	December
Cheapest in	January
Average price	$248

From Houston George Bush Intcntl to Islip Long Island

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One-way flight from Houston George Bush Intcntl to Islip Long Island

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Highest demand for flights based on searches. 6% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from George Bush Intcntl to Islip

Cheapest flights from George Bush Intcntl to Islip
Explore the most affordable flight options available from George Bush Intcntl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 14, 2025.

mié. 8/138:56 pmIAH - ISP

1 stop25h 51mFrontier

lun. 8/188:38 pmISP - IAH

1 stop20h 02mFrontier

Deal found 7/12

$262

mié. 8/135:27 pmIAH - ISP

3 stops24h 32mMultiple Airlines

lun. 8/1810:44 amISP - IAH

2 stops8h 42mMultiple Airlines

Deal found 7/12

$598

Best flights from George Bush Intcntl to Islip
Discover carefully curated flight deals from George Bush Intcntl to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 14, 2025.

vie. 8/18:56 pmIAH - ISP

1 stop21h 46mFrontier

lun. 8/48:38 pmISP - IAH

1 stop15h 10mFrontier

Deal found 7/14

$268

vie. 8/15:55 amIAH - ISP

2 stops30h 37mMultiple Airlines

lun. 8/410:44 amISP - IAH

3 stops13h 10mMultiple Airlines

Deal found 7/14

$643

Last-minute flights from George Bush Intcntl to Islip
Discover last-minute flight deals from George Bush Intcntl to Islip. Data last updated julio 14, 2025 and is based on user searches.

mié. 8/138:56 pmIAH - ISP

1 stop25h 51mFrontier

lun. 8/188:38 pmISP - IAH

1 stop20h 02mFrontier

Deal found 7/12

$262

mié. 8/135:27 pmIAH - ISP

3 stops24h 32mMultiple Airlines

lun. 8/1810:44 amISP - IAH

2 stops8h 42mMultiple Airlines

Deal found 7/12

$598

One-way flights from George Bush Intcntl to Islip
Search for one-way flight options from George Bush Intcntl to Islip. Find affordable one-way fares based on user searches. Data last updated julio 14, 2025.

mar. 9/94:31 pmIAH - ISP

1 stop17h 09mFrontier

Deal found 7/14

$116

dom. 7/275:55 amIAH - ISP

3 stops27h 09mMultiple Airlines

Deal found 7/13

$300

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

mié. 8/13

8:56 pm-11:47 pm

1 stop25h 51m

Islip Long Island

lun. 8/18

8:38 pm-3:40 pm

1 stop20h 02m

$262

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

mié. 8/13

5:27 pm-6:59 pm

3 stops24h 32m

Islip Long Island

lun. 8/18

10:44 am-6:26 pm

2 stops8h 42m

$598

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

mar. 9/2

4:43 pm-11:59 pm

1 stop6h 16m

$146

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

dom. 7/27

5:55 am-10:04 am

3 stops27h 09m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

Best time to book a flight from George Bush Intcntl to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from George Bush Intcntl 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 Houston George Bush Intcntl Airport to Islip

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Islip, New York?

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

Reviews of airlines servicing Islip

Peruse reviews from past customers who have flown with Frontier from Houston George Bush Intcntl Airport to Islip to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Frontier

5.9

Fair

3,261 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

TTN is a small airport for Frontier. Drop off is easy as is parking. The location is remote so there is zero traffic. The place could use a renovation but for the price you pay it is not necessary. Good-Staff is very friendly. Flight left on time. Bad- run down, deplaning/boarding on the tarmac. I got wet on the stairs outside of the plane while waiting to board.

Frontier

5.9

Fair

3,261 reviews

Frontier

5.9

Fair

3,261 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2025

TTN - TPA

Related info for your journey

What airport do you fly into for flights to Islip from Houston George Bush Intcntl?
Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Islip from Houston George Bush Intcntl. Booking flights from Houston George Bush Intcntl to Long Island (ISP) should be relatively easy as there are 0 daily inbound flights from Houston George Bush Intcntl from 0 different airlines.
Can I find deals for flights from George Bush Intcntl to Islip that include hotel bookings?
Yes. In addition to deals on George Bush Intcntl to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from George Bush Intcntl to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Islip.
Can I find deals for business class flights from George Bush Intcntl to Islip?
Yes. Cheapflights offers flight deals from George Bush Intcntl 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 Houston George Bush Intcntl Airport to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Islip, New York (average of $108). Flying from Houston George Bush Intcntl Airport 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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$116+ Cheap flights from George Bush Intcntl (IAH) to Islip, NY (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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from George Bush Intcntl 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 George Bush Intcntl to Islip

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Find flight deals from George Bush Intcntl to Islip

Cheapest flights from George Bush Intcntl to IslipExplore the most affordable flight options available from George Bush Intcntl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 14, 2025.

Explore the most affordable flight options available from George Bush Intcntl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Islip that are best for you.

Best time to book a flight from George Bush Intcntl to Islip

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

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to Islip

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Islip, New York?

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 julio 14, 2025.

Peruse reviews from past customers who have flown with Frontier from Houston George Bush Intcntl Airport to Islip to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl 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 Houston George Bush Intcntl?

Can I find deals for flights from George Bush Intcntl to Islip that include hotel bookings?

How can I find direct flights from George Bush Intcntl to Islip?

Can I find deals for business class flights from George Bush Intcntl to Islip?

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Islip, New York?

Traveling to a place near Islip?

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Cheapest flights from George Bush Intcntl to Islip
Explore the most affordable flight options available from George Bush Intcntl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 14, 2025.