Snow, rain, ice, wind and frigid temperatures are disrupting air travel plans across the United States
A powerful Arctic winter storm has placed more than 135 million people under weekend weather alerts. Airlines canceled more than 2,400 US flights by 9 p.m. ET Thursday and proactively canceled more than 2,200 flights for Friday, according to the flight tracking site FlightAware. Even for Saturday, more than 125 flights were already canceled. Delays…