About 400 flights at Chicago O'Hare International Airport canceled . Expected high in Bismarck , North Dakota , minus 11 , wind chill as low as minus 35 . Atlanta-based Delta Air Lines offered to issue winter weather travel waivers to Delta and Northwest passengers on flights to , from or through five states . Comment: In Memphis , Tennessee , city officials turn on heat for those who ca n't pay utility bills .
About 400 flights at Chicago O'Hare International Airport canceled . Expected high in Bismarck , North Dakota , minus 11 , wind chill as low as minus 35 . Comment: In Memphis , Tennessee , city officials turn on heat for those who ca n't pay utility bills .