Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hong Kong to Hilo as you normally would.
Related info for your journey
Useful info, stats and facts about Hong Kong to Hilo flights.
HKG stands for Hong Kong Intl Airport, while ITO stands for Hilo Intl 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.