In an attempt to leverage its frequent flyer program to defend its presence in Philadelphia, USAirways is offering triple miles between that city and 22 destinations. Registration is required.

USAirways is also offering lots of bonuses for flying specific routes on its Star Alliance partners.

Route-specific bonuses include bonuses for flying Austrian Airlines to Vienna (specific fares only), from 5,000 to 50,000 miles for flying United from Dulles to Zurich (on all fares except S, L, and T), and from 5,000 to 50,000 miles for flying United from Chicago to Osaka (looks like all fares earn something).

USAirways is also offering carrier-specific double miles on Asiana, bmi to Heathrow, Singapore, Thai, and Varig. These are all restricted to specific fare classes and require registration.