If you are arriving from outside Indonesia, check fares to neighboring countries such as Singapore (SIN), Kuala Lumpur, Malaysia (KUL), and Bangkok, Thailand (BKK). IF you are flying directly to Indonesia, try Jakarta (CGK), Surabaya (SUB), and Denpasar, Bali (DPS).
The best way to check regional flight options and who flies when/where is skyscanner shows what airlines fly to your destination, then connects you to the online booking site. There are no direct flights from Bali’s Denpasar airport (DPS), but you can easily (and inexpensively) fly to Surabaya (SUB). Pangaklan Bun (PKN) is in Central Kalimantan in Indonesian Borneo and it is the closest airport to Kumai, gateway to Tanjung Puting National Park.
Fly with Trigana Air daily flights from Jakarta, Semarang, Surabaya, Pontianak and Banjarmasin to Pangkalan Bun.