Airfare: Route maps for Garuda, Lion Air and Sriwijaya Air show routes into and out of Ambon. As of today. Sep 30, 2016,  a flight from DPS (Bali) to UPG (Makassar) leaving in less than a week costs about $30 USD on Lion Air. It costs $49 on Garuda and $38 on Sriwijaya. Flights from UPG to AMQ (Ambon) during that same period cost $42 on Lion Air and  $57 on Garuda. The flight is not available on Sriwijaya as it appears all the flights that close in are booked. Later flights on Sriwijaya cost $79. It seems that the UPG to AMQ route is more popular. The AMQ to SOQ (Sorong) cost $52 on Lion Air and $45 on Garuda and $113 on Sriwijaya. This means that there may be a good reason to book at least a month out. Think Traveloka for tickets.