Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Singapore to Amarillo as you normally would.
Related info for your journey
Useful info, stats and facts about Singapore to Amarillo flights.
SIN stands for Singapore Changi Airport, while AMA stands for Amarillo 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.