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