HappinesSMiles is the wonderfully named mileage program for Drukair - Royal Bhutan Airlines.
Most full-service airlines have some form of loyalty program (low-cost and budget airlines often do not). These are most obvious with the three main airline alliances, where earning points and points gives the chance to get 'free' flights with several airlines, plus status benefits across the alliance. Many smaller airlines have loyalty programs as well. These, of course, are more limited in scope - but are still