Completing a successful financial restructuring in which Singapore budget carrier Tiger Airways became a key investor, Mandala said it has scheduled its inaugural flight from Jakarta to the Indonesian city of Medan on April 5.
This will be followed by the first international flight from Jakarta to Kuala Lumpur in Malaysia on May 4, Mandala said in a joint statement with Tiger.
Tickets sales for both flights began selling Tuesday.
Other routes are expected to be announced "shortly", the statement said.
Tiger now owns 33.0 percent of the carrier, while Indonesian investment company Saratoga Group holds a majority 51.3 percent stake and the remaining 15.7 percent is owned by Mandala's previous shareholders and creditors.
Mandala was grounded in January 2011 due to its enormous debt but was cleared to fly again by Indonesian authorities last month after completing its restructuring process.
The carrier, which was owned by the Indonesian military until 2006 when private investors took over, has said it will adopt Tiger Airways' low-cost carrier model and will use new Airbus A320 aircraft in its fleet.