I leave early tomorrow morning (Wednesday) for a quick trip from IAD<->SEA. I am scheduled to leave SEA at 9am the next day to return to IAD. But here's the complication: I'm scheduled to land at 3pm Thursday, which would be a little bit after the snow has ended. Thoughts? Am I likely going to get cancelled/significantly delayed? I've lived here 17 years and don't recall flying into this type of weather, so I just don't know what happens at IAD when it snows.