DELTA JUST BECAME THE ONLY AIRLINE TO BLOCK MIDDLE SEATS INTO THE SPRING — BUT IT COULD BE THE LAST EXTENSION

© Thomas Pallini/Business Insider Thomas Pallini/Business Insider Delta Air Lines just extended its policy of blocking middle seats until the end of March. The airline did not say if it would continue the policy beyond that date. Delta will likely soon be the last US airline still blocking seats as competitors move to capture lost revenue after an extremely tough year for the industry. V...