Cheap Flights from Trenton (TTN) to Hilton Head Island (HHH)

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Find available prices by choosing your travel dates.
Flights from Trenton (TTN) to Hilton Head Island (HHH)
Origin airport
Mercer
Destination airport
Hilton Head Island
Distance
645 mi

Trenton to Hilton Head Island Flights

The cheapest times to fly from Trenton to Hilton Head Island

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Trenton to Hilton Head Island are during the month of . You can find some of the cheapest flights from Trenton to Hilton Head Island with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Trenton to Hilton Head Island

Sunday is one of the best days to book for cheap flights from Trenton to Hilton Head Island: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Trenton to Hilton Head Island

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Trenton to Hilton Head Island in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Trenton to Hilton Head Island flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Trenton to Hilton Head Island airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Hilton Head Island Airport (HHH) cost?
Discover the latest flight deals from TTN to HHH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from TTN to HHH?
The cheapest flights from TTN to HHH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from TTN to HHH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from TTN to HHH. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Mercer Airport (TTN) to Hilton Head Island Airport (HHH)?
Nonstop flights from Mercer Airport (TTN) to Hilton Head Island Airport (HHH) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from TTN to HHH?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Hilton Head Island Airport (HHH)?
Select a flight from Mercer Airport (TTN) to Hilton Head Island Airport (HHH) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Mercer Airport (TTN) to Hilton Head Island Airport (HHH) last-minute?
Waiting until just before your departure to book your flight from TTN to HHH generally means paying more. While you may find some last-minute deals, there’s no guarantee. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a TTN to HHH flight and hotel package?
Opting for a TTN to HHH flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of stays and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Hilton Head Island Airport (HHH)?
If you reserved your TTN to HHH flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you’d like more information.

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*Available to One Key members.