Frontier Group Holdings Inc. (NASDAQ:ULCC) is reportedly considering the possibility of a renewed acquisition of Spirit Airlines Inc. (NYSE:SAVE) amid the latter’s ongoing discussions with bondholders over a potential bankruptcy filing. What Happened: The two low-cost carriers have recently engaged in preliminary merger discussions. However, the talks are still in their early stages and may not result in a deal, The Wall Street Journal reported, citing people familiar with the matter. If a merger is agreed upon, it is likely to occur as part of Spirit’s debt and liability restructuring during …