The rates in this calculator include all American Airlines flights. MileSAAver awards can be booked for as little as 15,000 round trip for short haul distances. The rates are zones based and certain zones offer off peak rates (check AA site for exact dates). MileSAAver awards have limited availability.
AAnytime awards do not have any black out dates and are therefore somewhat more costly than the MileSAAver rates. Not all dates require the same number of miles, however: Level 1 and Level 2 rates apply to different dates.