Is that flight 1560 on March 31? If so that flight is 100% full. So there probably are no exit row seats to open up. Preferred members can pick them at any time, so a lot of times they are taken earlier than 24 hours out. Although KVS shows row 24 as all available. Try checking in and see if you can switch into those seats.
Otherwise though, normally they do open up at 24 hours out for change upon check-in. But on popular flights they are probably going to already be taken.
Last edited by javacodeguy; Mar 30, 2012 at 7:36 am