Through the end of the year, Dividend Miles members will earn Preferred status more quickly when purchasing select, qualifying fare classes and traveling on US Airways, Lufthansa and United.

The previous 150-percent bonus earned by flying first or business class will be raised to 200 percent. (F, A, C, D, Z and J fares on US Airways; F, A, C, D and Z classes on Lufthansa and United).

Full-fare coach, which previously earned a 100-percent bonus, now earns 150 percent. (US Airways classes Y, B, N, and U; United and Lufthansa classes Y and B).