Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hong Kong to Montevideo as you normally would.
Related info for your journey
Useful info, stats and facts about Hong Kong to Montevideo flights.
Hong Kong Intl Airport is HKG and Montevideo Carrasco Airport is MVD. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.