JetBlue and Spirit Airlines' $3.8 billion merger has been abandoned following a successful legal challenge by the U.S. Department of Justice, rendering moot an antitrust suit by air travelers. Scandinavian airline SAS has received approval for a debt restructuring plan in bankruptcy court, backed by a $1.2 billion investment from Air France-KLM and Castlelake. The approved Chapter 11 plan of reorganization allows SAS to proceed with its restructuring efforts. Additionally, there are concerns that both JetBlue and Spirit Airlines may face bankruptcy in the future due to the failed merger.