In flying to any place in Asia you want an airline that will take you there and has a reputation for having good decent service. Apart from saving huge money in the form of discounted airfare, you can also earn airline miles. The airline started as Delta Air Transport (DAT), was later a subsidiary of Belgian flag carrier Sabena, and then was spun off and renamed shortly after the bankruptcy of Sabena.
One can also book the cheap airline flights as part of a travel package that includes car rental and hotel stay. Airline flight pricing is a complex, unpredictable process driven by three factors: competition, demand, and inventory. Try scouting eBay for such opportunities although you might have to double check with the airline if the ticket is valid and transferable before bidding.