Airlines canceled nearly 2,700 U.S. flights as of Saturday afternoon after a massive winter storm snarled airport operations around the country, frustrating thousands of holiday travelers. There were flight delays within, into or out of the United States totaling about 6,200 as of Saturday afternoon, according to flight tracking website FlightAware, which showed total U.S. flight cancellations at around 2,700. The cancellations as of Saturday afternoon included over 750 from Southwest Airlines and nearly 500 from Delta Air Lines Inc.
