Thursday, February 13
(Undated) -- It's the worst travel day of the Winter. FlightAware.com says more than 61-hundred flights have now been cancelled. Delta has scrubbed more than 760 flights, and Southwest and US Airways have each grounded more than 590. Atlanta's Hartsfield-Jackson, Philadelphia International, Charlotte/Douglas International, Newark Liberty International, Reagan National and LaGuardia airports are all being hit especially hard by the winter storm that froze out the South before tracking to the Northeast.