WASHINGTON : US airports reported 22 incidents of air traffic controller shortages on Saturday, Transportation Secretary Sean Duffy said, with more shortages expected to bring more flight delays and cancelations in the days ahead as the government shutdown drags on. According to FlightAware, a flight tracking website, there were more than 5,900 US flight delays by 6 p.m. Eastern Time (2200 GMT) on Sunday and more than 5,300 on Saturday. Delays have often been above average since the shutdown began on October 1.

Unpaid air traffic controllers will miss their first full paycheck on Tuesday, traditionally an inflection point in previous government shutdowns—but sick calls are already on the…

Air traffic controllers are calling out or finding side jobs while they work without pay during the government shutdown, leading to delays.