Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Manila to Hilton Head Island as you normally would.
MNL stands for Manila Ninoy Aquino Intl Airport, while HHH stands for Hilton Head Island Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.