Airline stocks decreased essentially on Monday following the fall of the benchmark Standard & Poor's 500 Index by 1.2% amid growing uncertainty in the euro-zone. The NYSE Arca Airline Index declined by 1.5% to 34 points. Stocks of US Airways lost 3% to $5.46, shares of JetBlue Airways tumbled by 2% to $4.94 and stocks of United Continental Holdings decreased by 1.2% to $20.37.