500 Passengers Forced to Spend the Night on Grounded Planes After Heavy Snow — A Travel Nightmare Unfolds What was supposed to be a routine winter journey turned into a freezing, frustrating overnight ordeal for nearly 500 travelers at Munich Airport . As heavy snowfall blanketed southern Germany, flight operations slowed… then stopped entirely. But for hundreds of passengers already boarded onto aircraft, the real shock came when they realized they wouldn’t be going anywhere