There are only 4 seasons of this show. The first one where he is in Fox River. THe second one where they are on the run. The third one they are in Sona and the fourth one they are looking for scylla. The fourth Season is coming to a close now and has been confirmed long ago that it is in fact the last season. However there may be two extra episodes that may air on Fox but will more likely be released as a dvd, entitled Prison Break: The Final Break. So there are only four seasons.