United Airlines Holdings, Inc. (NASDAQ:UAL) is one of the most undervalued travel stocks to buy according to hedge funds. On February 3, Citi lifted the price target on United Airlines Holdings, Inc. (NASDAQ:UAL) to $155 from$153 and maintained a Buy rating on the shares. The firm also added an “upside 90-day catalyst watch” on the stock and stated that it is “tactically bullish” on the sector. United Airlines Holdings Inc (UAL): Get With The Program, Says Jim Cramer In another development, Bernstein al ...