I am comparing Jet Blue and Southwest to decide which is our preferred airline before the rates are released for our trip in Feb. 2012. It appears that Jet Blue's seats are assigned when booking made, but then in another spot on their website it states if assigned seating not available online it will have to be done at airport. Very confusing. Can anyone clarify? Southwest appears to allow people to choose their seats but you can do things to get an earlier boarding time therefore more choice for your seating if I am understanding their info. correctly. Any help to clarify or correct me would be appreciated.