Frontier was one of many budget airlines that rose to prominence during the low-cost airfare craze. But economic and market shifts have changed the game. WSJ’s Alison Sider explores how Frontier is trying to find a balance between the cheap flights that originally made budget airlines popular and the premium amenities consumers increasingly want. Jessica Mendoza hosts.Further Listening:- R.I.P. Spirit Airlines- How Spirit Airlines Landed in Bankruptcy- The Love Triangle Over Spirit Airlines- Frontier, Spirit and the Future of Low-Cost AirlinesSign up for WSJ’s free What’s News newsletter.Learn more about your ad choices. Visit megaphone.fm/adchoices