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 McAllen 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 52 days in advance, which can save you up to 66% on flights from McAllen to Islip, New York compared to booking the week you need them. Waiting 52 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 $362. For sooner than that we have options available in the next 3 days from $393.

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

February is one of the best times of the year to fly to Islip, New York from McAllen. Prices for February average $345 per person but you can even find prices for as low as $230. The most expensive prices can be found in the month of December. Opting for a February flight can save you 35% on your journey compared to booking in December

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

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

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

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

How can I find direct flights from McAllen to Islip?

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

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

Yes. Cheapflights offers flight deals from McAllen 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.

$1,232+ Flights from McAllen to Islip, NY

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Cheap flight deals from McAllen to Islip

Round-trip from	$1,232 (United)
Popular in	December
Cheapest in	February
Average price	$329

From McAllen Miller Intl to Islip Long Island

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Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from McAllen to Islip

Cheapest flights from McAllen to Islip
Explore the most affordable flight options available from McAllen to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Wed 12/249:45 amMFE - ISP

2 stops28h 36mMultiple Airlines

Thu 1/17:30 amISP - MFE

2 stops16h 55mMultiple Airlines

Deal found 8/17

$1,232

Best flights from McAllen to Islip
Discover carefully curated flight deals from McAllen to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Wed 12/249:45 amMFE - ISP

2 stops28h 36mMultiple Airlines

Thu 1/17:30 amISP - MFE

2 stops16h 55mMultiple Airlines

Deal found 8/17

$1,232

Fly from

Fly to

Route

Depart

Return

Price

McAllenIslip

MFE - ISP

MFEISP

McAllen Miller Intl

Wed 12/24

9:45 am-3:21 pm

2 stops28h 36m

Islip Long Island

Thu 1/1

7:30 am-11:25 pm

2 stops16h 55m

$1,232

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Best time to book a flight from McAllen to Islip

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

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

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

Related info for your journey

Can I find deals for flights from McAllen to Islip that include hotel bookings?
Yes. In addition to deals on McAllen to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from McAllen to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from McAllen to Islip.
Can I find deals for business class flights from McAllen to Islip?
Yes. Cheapflights offers flight deals from McAllen 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 McAllen to Islip, New York?
Currently, January is the cheapest month in which you can book a flight from McAllen to Islip, New York (average of $108). Flying from McAllen 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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Complete your trip

Islip, New York car rentals

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$1,232+ Cheap flights from McAllen to Islip, NY (MFE - 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from McAllen to Islip with Cheapflights

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Cheap flight deals from McAllen to Islip

Round-trip from

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Find flight deals from McAllen to Islip

Cheapest flights from McAllen to IslipExplore the most affordable flight options available from McAllen to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from McAllen to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from McAllen to Islip

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

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from McAllen 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 McAllen to Islip that include hotel bookings?

How can I find direct flights from McAllen to Islip?

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

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

Traveling to a place near Islip?

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Cheapest flights from McAllen to Islip
Explore the most affordable flight options available from McAllen to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.