Yes, there are several budget airlines that fly within Indonesia. Here are some of the most popular ones:

Indonesia AirAsia: A low-cost carrier that offers affordable fares and connects to 15 local destinations and four other countries.

Citilink: A subsidiary of Garuda Indonesia, Citilink offers a no-frills experience while ensuring that all the essentials for a pleasant journey are in place.

Batik Air: A part of the Lion Air Group, Batik Air is known for its in-flight entertainment systems, a feature not commonly found in budget airlines.

Sriwijaya Air: Connects major cities and reaches far-flung destinations within Indonesia, bringing the less explored parts of the archipelago closer to you.

NAM Air: Specializes in connecting secondary routes across the Indonesian archipelago, from Java to Kalimantan, Papua, Sulawesi, and Sumatra.

Lion Air: One of the largest low-cost carriers in Indonesia, offering flights to numerous destinations across the country.

Wings Air: A subsidiary of Lion Air, Wings Air operates short-haul flights to smaller airports and remote areas.

These budget airlines offer a range of options for travelers looking to explore Indonesia without breaking the bank.