It looks like my last minute travel is really going to pick up in the next few months and I was thinking I'd look at this program. Does anyone know how the flight miles are calculated? I'll be doing a bunch of traveling to SAV and CAE, and with no non-stop from DEN, am I charged the DEN-IAD-CAE ~1800 miles or the DEN-CAE 1350 miles? Obviously that makes a big difference to my folks in terms of cost.