PASSAGES, Asia's first frequent-flyer programme, claims to have signed up about 150,000 ''members'' since its inception.
Formed last July by Cathay Pacific, Malaysia Airlines and Singapore Airlines, it expanded in September to include British Airways, Swissair and Austrian Airlines.
Silkair joined in January and more airlines are due to register an interest in the next two years.
Their combined force ensures travellers benefit from an impressive network of routes across the world on internationally recognised carriers.
The purpose of the ''club'' was to extend existing privileges like priority baggage-handling and special airport lounges to include free airline tickets.
Under the scheme's terms, only first-class and business-class passengers can earn points for free flights, upgrades and companion tickets.
Points can be also earned by staying at certain hotel chains like Hilton and Hyatt, taking out car hire with specific operators like Hertz, and using charge and credit cards which are affiliated to the scheme.