Jet Blue from JFK has many flights,not so crazy if you get to MoBay at 1pm.....But if you fly from JFK-MoBay-Atl then that may be pricey? JFK-MoBay-Jfk will be cheaper,then fly to Atl.....They will charge you more for a one way to Atl,,,SO! Book a round trip for cheaper then cancel the return,pay the penalty but have the leftover $ ??? If it works out. (former travel agent)