Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Penang to East Timor as you normally would.
Penang Intl (PEN) is the airport you will fly out of if you book a flight from Penang to East Timor. It is only a 14.5 km journey to Penang Intl (PEN) from Penang’s city centre.
This is defined as Penang Intl Airport (PEN) and Dili Comoro Airport (DIL). Codes like Dili Comoro Airport are often used to just call airports uniquely.