More than 2,200 flights have been canceled on Jan. 2, the day after New Year’s, amid staffing shortages and poor weather conditions in some parts of the United States. Some 2,233 flights within, into, or out of the United States were canceled on the morning of Jan. 2, according to tracking website FlightAware. About 3,000 delays have been reported, the website’s data show. Chicago’s O’Hare International Airport had the most delays and cancelations, with more than 500 flights being canceled, according to FlightAware. Denver International Airport had nearly 300 cancelations. The mess of flight cancelations can be blamed, in part, on snowstorms that have affected O’Hare and Denver’s airport. Some have suggested that flight crew shortages are also to blame amid a bevy of COVID-19-related sick calls in recent days, which have likely been exacerbated by airlines’ vaccine requirements for staff. SkyWest Airlines, which operates flights for American, Delta, United, and …