These are only a few of the key metrics included in United Airlines and Controladora Vuela Compania de Aviacion, B. de C.V strong Value grade, but they help show that the stocks are likely undervalued right now. When factoring in the strength of its earnings outlook, UAL and VLRS look like an impressive value stock at the moment. Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report United Airlines Holdings Inc (UAL) : Free Stock Analysis Report Controladora Vuela Compania de Aviacion, S.A.B. de C.V. (VLRS) : Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research