US Airways: Grand Slam Promotion. Up to 110,000 bonus miles

US Airways is running their annual Grand Slam Promotion. What is the Grand Slam Promotion? It’s US Airways’ way of rewarding its members for using US Airways Dividend Miles partners. The promotion runs from September 14th to November 14th. Here are the rules for the promotion: Grand Slam Promotion Rules. The smallest bonus is 3,000 […]