US winter storms have hampered the restart of flight operations at some major hubs, with the industry bracing for further disruptions as another arctic blast looms later this week, Bloomberg reported on Tuesday, January 27.Delta Air Lines Inc. was quoted as saying that unfavorable weather conditions in the Northeast will affect services at its hubs in Boston and New York’s John F. Kennedy International Airport.American Airlines Group Inc. has already axed about 500 mainline and regional services on Tuesday, ...