Frontier Group Holdings Inc. is planning an initial public offering that would make it the first U.S. airline to go public in three years. The Denver-based airline filed regulatory documents on Friday flagging its intention to make a public market debut, without specifying the offering’s timing or number of shares. Frontier is one of three discounters—alongside Spirit Airlines Inc. and Allegiant Travel Co.’s Allegiant...

Source: Wall Street Journal March 31, 2017 20:50 UTC