In this articleJBLUJetBlue planes at JFK's Terminal 5 in New York.Leslie Josephs | CNBCJetBlue Airways will open its first airport lounges in its more than two decades of flying, a major shift for the low-cost airline as it chases high-spending travelers.The lounges will open at the carrier's hubs in New York late next year followed by Boston, JetBlue said Thursday.The airline is also planning to launch a new "premium" credit card with its partner, Barclays, taking a page from the likes of Delta Air Lines, ...