United Airlines (UAL) is one of the stocks most watched by Zacks.com visitors lately. So, it might be a good idea to review some of the factors that might affect the near-term performance of the stock.Shares of this airline have returned +8.2% over the past month versus the Zacks S&P 500 composite's +3.9% change. The Zacks Transportation - Airline industry, to which United belongs, has gained 5.5% over this period. Now the key question is: Where could the stock be headed in the near term?Although media repo ...