Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Indonesia to Alaska as you normally would.
This is defined as Denpasar Bali Ngurah Rai Airport (DPS) and Anchorage Airport (ANC). Codes like Anchorage Airport are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Fairbanks Airport (FAI), Juneau Intl Airport (JNU), Ketchikan Airport (KTN), Sitka Airport (SIT), Kodiak Airport (ADQ).