An estimated 1,000 travelers spent Monday night at Denver International Airport amid a wave of flight cancellations by Southwest Airlines. The number of people having to spend the night in the airport did tumble on Tuesday to 50 or fewer people, Denver International Airport’s Alex Renteria told The Hill in an email. Denver has been at the center of the storm when it comes to flight cancellations. On Monday, more than 460 flights through Denver International were canceled, and the airport saw more canceled flights than any other on Tuesday as well, according to FlightAware. Tuesday saw 362 flights canceled,...