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).

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

When flying from Ontario 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.

Most accurate provider : When it comes to deals on Ontario-Hilton Head Island flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Ontario-Hilton Head Island flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Ontario-Hilton Head Island flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Hilton Head Island flights, Cheapflights users trust Expedia the most. Expedia 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 Ontario-Hilton Head Island flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Ontario 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 Ontario to Hilton Head Island.

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

Yes. Cheapflights offers flight deals from Ontario 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.

$389+ Flights from Ontario to Hilton Head Island

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Cheap flight deals from Ontario to Hilton Head Island

One-way flights from Ontario to Hilton Head Island
Search for one-way flight options from Ontario to Hilton Head Island. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.

Sun 12/2110:40 pmONT - HHH

1 stop9h 04mAmerican Airlines

Deal found 12/7

$389

Mon 12/227:18 pmONT - HHH

2 stops12h 26mAmerican Airlines

Deal found 12/7

$454

Tue 12/236:20 amONT - HHH

2 stops8h 23mAmerican Airlines

Deal found 12/7

$474

Mon 12/156:17 amONT - HHH

2 stops9h 16mAmerican Airlines

Deal found 12/6

$484

Find flight deals from Ontario to Hilton Head Island

Most accurate provider	Expedia 2 stars
Most trusted provider	Expedia 3 stars
Popular in	November
Cheapest in	September
Average price	$674

Provider with most accurate pricing for Ontario-Hilton Head Island flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Hilton Head Island flights.

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($176 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($46 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OntarioHilton Head Island

ONT - HHH

ONTHHH

Ontario

Sun 12/21

10:40 pm-10:44 am

1 stop9h 04m

$389

OntarioHilton Head Island

ONT - HHH

ONTHHH

Ontario

Mon 12/22

7:18 pm-10:44 am

2 stops12h 26m

$454

OntarioHilton Head Island

ONT - HHH

ONTHHH

Ontario

Tue 12/23

10:40 pm-10:44 am

1 stop9h 04m

$469

OntarioHilton Head Island

ONT - HHH

ONTHHH

Ontario

Mon 12/15

6:17 am-6:33 pm

2 stops9h 16m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Most accurate provider: When it comes to deals on Ontario-Hilton Head Island flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Ontario-Hilton Head Island flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Ontario-Hilton Head Island flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Hilton Head Island flights, Cheapflights users trust Expedia the most. Expedia 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 Ontario-Hilton Head Island 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 Ontario to Hilton Head Island

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

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Hilton Head Island (average of $112). Flying from Ontario to Hilton Head Island in February 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

Can I find deals for flights from Ontario to Hilton Head Island that include hotel bookings?
Yes. In addition to deals on Ontario to Hilton Head Island flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario 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 Ontario to Hilton Head Island.
Can I find deals for business class flights from Ontario to Hilton Head Island?
Yes. Cheapflights offers flight deals from Ontario 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 Ontario to Hilton Head Island?
Currently, October is the cheapest month in which you can book a flight from Ontario to Hilton Head Island (average of $112). Flying from Ontario to Hilton Head Island in February 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.

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$389+ Cheap flights from Ontario to Hilton Head Island (ONT - HHH)

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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Hilton Head Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Hilton Head Island

One-way flights from Ontario to Hilton Head IslandSearch for one-way flight options from Ontario to Hilton Head Island. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.

Search for one-way flight options from Ontario to Hilton Head Island. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.

Find flight deals from Ontario to Hilton Head Island

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

Related info for your journey

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

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

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

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

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One-way flights from Ontario to Hilton Head Island
Search for one-way flight options from Ontario to Hilton Head Island. Find affordable one-way fares based on user searches. Data last updated December 8, 2025.