Thousands of flights have been canceled, including more than 400 out of Atlanta’s Hartsfield-Jackson airport – the nation’s busiest airport – where a ground delay has been issued.

Winter storms closed schools, snarled flights and put millions of residents on alert across parts of the Deep South and south-central United States.

Major airports including Atlanta and Charlotte, N.C., continued to report disruptions Saturday as a winter storm continues across the South.

With an outside chance to nab the NFC South title and the conference’s last playoff spot, the Falcons play host to the Panthers.