Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lombok to Palawan as you normally would.
Related info for your journey
Useful info, stats and facts about Lombok to Palawan flights.
This is defined as Praya Lombok Intl Airport (LOP) and Puerto Princesa Airport (PPS). Codes like Puerto Princesa Airport are often used to just call airports uniquely. El Nido Airport (ENI), Busuanga Airport (USU), San Vicente Airport (SWL) are other airports near this flight route and their unique identifiers/IATA codes.