Severe storms swept the US this Christmas, causing major travel chaos and deadly floods. Over 1,800 flights were cancelled and 22,000 delayed as winter storm Devin blanketed the Northeast and Midwest with snow. California faced record rain, leading to floods that killed three people. New York’s JFK, Newark, and LaGuardia airports lost half the nation’s cancelled flights. JetBlue cancelled around 350 flights in the Northeast alone. Change fees for passengers were waived by major airlines including American, United, and JetBlue. New York and New Jersey declared states of emergency. Governor Kathy Hochul said, "As widespread snowfall is expected... I will declare a State of Emergency to ensure resources for the storm response." New Jersey’s Acting Governor Tahesha Way urged travellers to avoid roads. Forecasts warned of 11 inches of snow in New York City and risky travel conditions from the Great Lakes to New England. Meanwhile, California’s heavy rain caused floods, mudslides, and power outages. Officials confirmed three deaths: a sheriff’s deputy in Sacramento, a man hit by a falling tree in San Diego, and another storm-related fatality. Mountain towns like Wrightwood received a foot of rain, with homes flooded and vehicles stuck in mud. Residents shared stories of candle-lit nights and rescuing pets from floodwaters. Fire crews faced "very dire situations," with some trapped under five feet of mud and water. Governor Gavin Newsom declared emergencies in six counties and deployed the National Guard. Los Angeles marked its wettest Christmas in over 50 years. Flood watches remain as the storm eases, but snowy and icy conditions persist in the Northeast, threatening weekend travel.