Asiana Club has perhaps the easiest status qualification criteria of any Star Alliance airline for those who fly primarily in Y. Hence, if Star Alliance status and its requisite benefits are the most important aspect of your FFP requirements, take a good look. Your joining date is termed the reference date (or 1st october 2008 for those who joined prior to the new rules. You have two years from your reference date to satisfy tier criteria, and note that you are not “reset” once you hit a tier, i.e. you can go from Silver to Gold to Diamond with the same miles and in the same period. Once you satisfy a tier's criteria, you will have that status for the remainder of the 2 year qualifying period, plus the next 2 year qualifying period (during which you need to satisfy the criteria again to maintain status). The tier requirements are as follows: Asiana Club Silver – base tier, no requirements Asiana Club Gold (Star Alliance Silver) – 20,000 miles (or 30 segments on OZ) Asiana Club Diamond (Star Alliance Gold) – 40,000 miles (or 50 segments on OZ) Asiana Club Diamond Plus (Star Alliance Gold) – 100,000 miles (or 100 segments on OZ) Asiana Club Platinum (Star Alliance Gold, lifetime membership) – 1 million miles (or 1000 segments on OZ) Hence, if you were to join Asiana Club on 1st March 2011, and accrued 40k miles by August, your Diamond (Star Alliance Gold) Status would be valid until February 2015. (2 year qualifying period ends Feb 2013, and next period ends Feb 2015.) You would need to earn another 40k between March 2013 and February 2015 to keep the status going after that. For some, who travel around 40k miles a year, and always fret about meeting the mileage requirements of other programmes, this is attractive since you could put in just enough miles to get the status, then put the rest of your travel into an alternative FFP where you can benefit more from the miles. Edit: added Diamond Plus tier that was missing from original.