Several frequent flyer programs have a way for you to spend those orphaned miles you have in your various frequent flyer accounts. Or, it might be a great way to keep your miles active–spending just a few miles will not only get you a magazine subscription–but will extend the life of your miles.
You can get a full-year subscription to top magazines for as few as 400 miles in American AAdvantage https://americanairlines.mpmvp.com/magazine, Continental One Pass http://www.magsformiles.com/continental, Delta SkyMiles/Northwest WorldPerks https://delta.mpmvp.com/magazine or https://nwa.mpmvp.com/magazine and US Airways Dividend Miles http://www.magsformiles.com/usair. In Midwest Airlines Midwest Miles https://midwest.mpmvp.com/magazine and Hawiian Airlines HawaiianMiles http://www.magsformiles.com/hawaiian you can get a full-year magazine subscription for as few as 500 miles. And in Frontier EarlyReturns you can get a full-year subscription starting at 1,200 miles http://www.insideflyer.com/link/?1646. All subscriptions are available for residents of the U.S. only.
Furthermore, if you would like to add to your mileage balance, you can get up to 2,000 miles in Delta SkyMiles and HawaiianMiles when subscribing to magazines.