Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Palawan to Guam as you normally would.
Related info for your journey
Useful info, stats and facts about Palawan to Guam flights.
Great question - PPS to GUM just means Puerto Princesa Airport to Tamuning Guam Intl Airport. Now you’ll know what these unique codes when you look for flights! El Nido Airport (ENI), Busuanga Airport (USU), San Vicente Airport (SWL) are some additional IATA codes for airports related to your trip.