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Air travel disruptions continued on Tuesday across the United States, with more than 1,200 flights canceled as the Federal Aviation Administration continues to limit capacity at 40 major U.S. airports amid the government shutdown. Some 1,528 flights within, into or out of the United States also were delayed on Tuesday, according to FlightAware, along with the 1,201 that had been canceled. At least 799 flights planned for Wednesday have also already been canceled, FlightAware said. The Federal Aviation Administration continues to limit capacity at 40 major U.S. airports. Piled on top of that, wintry weather conditions slammed parts of the country on Monday and Tuesday. RELATED: Over 1,600 flights canceled Monday as Trump tells air traffic controllers: 'Get back to work, NOW' The airport with the highest count of cancellations logged early on Tuesday was Chicago O'Hare International Airport, where more than 60 flights had been canceled before 5 a.m. local time. More than 300 flights had been canceled at that Midwest hub on Monday, in part because of heavy snowfall. The forecast in Chicago on Tuesday called for light snow in the morning, according to ABC News station WLS. Over 2,000 flights were cancelled across the country on Monday, with President Donald Trump threatening air traffic controllers to "get back to work, NOW!!!" "All Air Traffic Controllers must get back to work, NOW!!! Anyone who doesn't will be substantially 'docked,'" Trump said in a social media post on Monday. Trump also claimed he was recommending a $10,000 bonus to air traffic controllers who did not take any time off during the government shutdown, though he did not explain specifics on how that would be done. "For those that did nothing but complain, and took time off, even though everyone knew they would be paid, IN FULL, shortly into the future, I am NOT HAPPY WITH YOU," Trump said. ATC Union President Nick Daniels responded to Trump's post during a press conference on Monday, saying controllers "should not be the political pawn during a government shutdown." "I'll take anything that recognizes these hard-working men and women, but we'll work with the administration on any issues that are out there," Daniels said. "Air traffic controllers have continued to show up during this shutdown. They've endured a longest shutdown in American history, and every single day, they absolutely, not only deserve their pay, they deserve to be recognized for what's going on." This is a developing story. Please check back for updates.