The U.S. airline industry could see a wave of bankruptcies by the winter unless demand improves...

|By:, SA News Editor

The U.S. airline industry could see a wave of bankruptcies by the winter unless demand improves and tight credit eases. Southwest (LUV) is the only U.S. airline left with an investment-grade credit rating and Moody's has negative outlooks on eight of the nine largest carriers.