I’m guessing by now most of you have all the US Airways miles you could possibly need. Relative to past promotions (like the holiday bonus or past 100% bonus offers) this isn’t as good of a deal, especially since US Airways recently “enhanced” their award chart and raised the price of purchasing miles by a quarter of a cent a piece, but in absolute terms it’s still a great deal. There’s a limit of 50,000 miles to be doubled (at the rate of 2.75 cents per mile). As Gary points out, you’re getting 100,000 miles for $1,478 including tax, which is enough for a business class award ticket to Europe. Not a bad deal!
With the number of times they’re running this promotion I really have to wonder why they limit the number of miles that can be doubled. Seems like the offer is working out well for them if they keep offering it!