Because of winter weather, with snowfall, sleet, and freezing rain, 120 of the 1,090 flights scheduled for Sunday at Germany's busiest airport, Frankfurt, have been cancelled, a spokesman for the airport operator Fraport told dpa. As runways need to be cleared and visibility is reduced, the airport's capacity is limited, he said. Additionally, the de-icing of aircraft is taking longer due to the weather conditions, he added. The spokesman advised passengers to check with their airline regarding