The Star Alliance formed in 1997 with five airlines: Air Canada, Lufthansa, SAS, Thai Airways and United Airlines. The program has expanded to include 25 member airlines and has become the largest airline alliance in the world. Go to http://www.staralliance.com for details on the 15th Anniversary celebration for Star Alliance. You might win one of several prizes. When you register for the Star Alliance 15th Anniversary promotion through your program’s website, and if you are one of the members who fly the most between May 14 and Nov. 14, 2012, you’ll earn 15,000 bonus miles.