Start from the THAI destination nearest your home, and head east or west. You must keep going the same direction until you return to your starting point but you have up to 12 months to do it.
Most stopovers are for unlimited periods and some side trips are permitted.
There are many options for you to choose from, depending on your origin and the direction you take. You can choose to fly First, Business or Economy class. This special fare is applicable all year. To quailfy your travels must commence from and return to the same country. Your trip must be in a continuous eastbound or westbound direction without backtracking, and tickets must be purchased in advance.