The ongoing federal government shutdown is starting to ripple through the skies over the New York region – and Newark Liberty International Airport is feeling the strain already.

A week into the government shutdown, air traffic controller sick calls are beginning to cause delays and cancellations as a number of airport towers and control facilities don’t have enough staff to properly handle all flights.

When there's a shortage of air traffic controllers, the FAA reduces the number of takeoffs and landings to ensure the on-duty personnel aren't overwhelmed and the system remains safe. But that can creates flight delays and cancellations.

Nashville International Airport (BNA) is experiencing the effects of a national air traffic controller shortage amid the busiest time of year at BNA.

Understaffing at air traffic control towers has affected flights this week. But the The National Air Traffic Controllers Association president says worker shortages are nothing new.

Transportation Secretary Sean Duffy appeared at the New Jersey airport to say the federal government shutdown is already affecting air traffic controller staffing and sick calls.