Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Puerto Princesa to Legazpi City as you normally would.
Yes, there are multiple flights from Puerto Princesa to Legazpi City for under ₱3,400. The cheapest flight booked recently is on Multiple Airlines for just ₱3,342, but on average you can expect to pay ₱9,666.
The Puerto Princesa to Legazpi City Legaspi flight path was viewed by 15 users in the past month. Keep an eye out for changes in search interest prior to high and low season.