Staffing shortages led to more flight delays at airports across the U.S. on Tuesday as stretched into a seventh day, while union leaders for air traffic controllers and airport security screeners warned the situation was likely to get worse.

The Federal Aviation Administration reported staffing issues at airports in Nashville, Boston, Chicago and Philadelphia, and at its air traffic control centers in Atlanta and the Dallas-Fort Worth area. The agency temporarily slowed takeoffs of planes headed to the first three cities.

See Full Page