The Federal Aviation Administration reported staffing issues at airports in Nashville, Boston, Dallas, Chicago and Philadelphia, and at its air

FAA reports O'Hare Airport faced 41-minute delays due to the shutdown-induced air traffic controller shortage.

A union representing air traffic controllers, the National Air Traffic Controllers Association, told The Associated Press that staffing problems could worsen as the shutdown persists.

Prescott and Show Low Regional are just two of more than 100 airports nationwide that could lose funding Sunday, from the Federal Aviation Administration.

Air traffic controller shortages are causing problems for travelers nationwide, including those in San Antonio, amid the ongoing federal government shutdown.

“DFW is operating normally. Airports are considered essential services, and key federal employees such as air traffic controllers and security personnel continue during a government shutdown,” Zachary Greiner, a public information officer for the airport, said in an email to The Dallas Morning News.

The Essential Air Service, which provides funding for rural airline routes, serves communities across all 50 states and Puerto Rico, according to the Transportation Department.

By Monday evening, the FAA was reporting that staffing shortages were creating delays in the Burbank, Newark and Denver airports. The worst problems were in Burbank, where California Gov. Gavin Newsom said no controllers were on duty during the evening, leading to average delays of two-and-a-half hours at that airport.

Ontario International Airport was recently awarded a $10.81 million grant from the Federal Aviation Administration’s Airport Improvement Program for runway and taxiway upgrades. The funds will go toward reconstruction of more than 5,