General alert - Delta miles don't expire but they have recently removed their award charts from their website. So you won't know what mileage level to aim for to redeem. You'll only know how much your award costs once you've made it all the way through to paying for the award booking on their online award calendar (which suffers from a number of pricing problems which were usually inconsistent with the award charts anyway)

More details on #AwardChartGate

http://www.flyertalk.com/forum/delta...ard-chart.html

http://onemileatatime.boardingarea.c...d-charts-gone/

http://viewfromthewing.boardingarea....ation-loyalty/

http://deltapoints.boardingarea.com/...ing-move-year/