Deal is back: Fly to Buenos Aires for $887 coach, $1478 for business

US Airways is once again offering a 100% bonus on purchased miles until September 15. As we previously wrote:

This means that when you buy 30,000 miles for $887, they give you another 30,000 miles – enough for a coach ticket to Buenos Aires. When you buy 50,000 miles for $1478, you end up with 100,000 miles – enough for a business class ticket to Buenos Aires. (Check out their awards chart  here.) The business class ticket in particular is an amazing deal given that business fares are upwards of $2800, and most coach fares cost almost this much.

Click here to buy.