In terms of precipitation, rainfall in Hilton Head Island ranges from 2.4 - 7.8 inches per month. August is typically the wettest month, when rainfall can reach 7.8 in. November is typically the driest time to visit Hilton Head Island when rainfall is around 2.4 in.

If weather is an important factor for your trip to Hilton Head Island, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

How far in advance should I book a flight from Islip to Hilton Head Island?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 35 days in advance, which can save you up to 181% on flights from Islip to Hilton Head Island compared to booking the week you need them. Waiting 35 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 $276. For sooner than that we have options available in the next 3 days from $479.

What is the cheapest month to fly from Islip to Hilton Head Island?

March can be a great time to fly to Hilton Head Island from Islip with a flight ticket averaging about $355. Cheapflights users have found deals in the month of March for as cheap as $157. The most expensive prices can be found in the month of May.

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

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

Can I find deals for flights from Islip to Hilton Head Island that include hotel bookings?

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

How can I find direct flights from Islip to Hilton Head Island?

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

Can I find deals for business class flights from Islip to Hilton Head Island?

Yes. Cheapflights offers flight deals from Islip to Hilton Head Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$986+ Flights from Islip to Hilton Head Island

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Cheap flight deals from Islip to Hilton Head Island

Round-trip from	$986 (United)
Popular in	May
Cheapest in	March
Average price	$341

From Islip Long Island to Hilton Head Island

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Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Cheapest flights from Islip to Hilton Head Island
Explore the most affordable flight options available from Islip to Hilton Head Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Fri 10/1711:53 amISP - HHH

2 stops23h 47mMultiple Airlines

Mon 10/2011:57 amHHH - ISP

2 stops27h 24mMultiple Airlines

Deal found 9/9

$986

Best flights from Islip to Hilton Head Island
Discover carefully curated flight deals from Islip to Hilton Head Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 10/1711:53 amISP - HHH

2 stops23h 47mMultiple Airlines

Mon 10/2011:57 amHHH - ISP

2 stops27h 24mMultiple Airlines

Deal found 9/9

$986

Last-minute flights from Islip to Hilton Head Island
Discover last-minute flight deals from Islip to Hilton Head Island. Data last updated September 11, 2025 and is based on user searches.

Fri 10/1711:53 amISP - HHH

2 stops23h 47mMultiple Airlines

Mon 10/2011:57 amHHH - ISP

2 stops27h 24mMultiple Airlines

Deal found 9/9

$986

Cheapflights Fare Finder

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

Fly from

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Route

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Return

Price

IslipHilton Head Island

ISP - HHH

ISPHHH

Islip Long Island

Fri 10/17

11:53 am-11:40 am

2 stops23h 47m

Hilton Head Island

Mon 10/20

11:57 am-3:21 pm

2 stops27h 24m

$986

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Islip to Hilton Head Island

Have a flexible travel schedule? Discover the best time to fly to Hilton Head Island from Islip 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 Islip to Hilton Head Island

What is the cheapest month to book a flight from Islip to Hilton Head Island?

Currently, January is the cheapest month in which you can book a flight from Islip to Hilton Head Island (average of $275). Flying from Islip to Hilton Head Island in March is currently the most expensive (average of $480). 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 Islip to Hilton Head Island that include hotel bookings?
Yes. In addition to deals on Islip to Hilton Head Island flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Hilton Head Island?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Hilton Head Island.
Can I find deals for business class flights from Islip to Hilton Head Island?
Yes. Cheapflights offers flight deals from Islip to Hilton Head Island 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 Islip to Hilton Head Island?
Currently, January is the cheapest month in which you can book a flight from Islip to Hilton Head Island (average of $275). Flying from Islip to Hilton Head Island in March is currently the most expensive (average of $480). 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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$986+ Cheap flights from Islip to Hilton Head Island (ISP - HHH)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Hilton Head Island with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Islip to Hilton Head Island

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Find flight deals from Islip to Hilton Head Island

Cheapest flights from Islip to Hilton Head IslandExplore the most affordable flight options available from Islip to Hilton Head Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Islip to Hilton Head Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Islip to Hilton Head Island

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

Cheapflights Insights

Everything you need to know about your flight from Islip to Hilton Head Island

What is the cheapest month to book a flight from Islip to Hilton Head Island?

Related info for your journey

Find useful and relevant information for your journey from Islip to Hilton Head Island. 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 Islip to Hilton Head Island that include hotel bookings?

How can I find direct flights from Islip to Hilton Head Island?

Can I find deals for business class flights from Islip to Hilton Head Island?

What is the cheapest month to book a flight from Islip to Hilton Head Island?

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Cheapest flights from Islip to Hilton Head Island
Explore the most affordable flight options available from Islip to Hilton Head Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.