Philippine carrier Zest Air plans to launch two new domestic services on 20 December.
It will operate daily services on the Cebu-Davao and Cebu-Puerto Princesa routes using Airbus A320 aircraft, says the airline.
The airline has also launched a daily Clark-Seoul Incheon service, according to its timetable schedule.
In addition, Zest Air will raise the frequency of its Cebu-Seoul Incheon service from twice weekly to daily starting 20 December.
Innovata Schedules show that Zest Air will compete with carriers such as Jin Air and Asiana Airlines on the Clark-Seoul Incheon route.