Flight delays and cancellations are piling up Saturday across the U.S. after the Federal Aviation Administration cut flights at 40 U.S. airports on Friday.

HOUSTON — The Federal Aviation Administration is warning of a ground delay at George Bush Intercontinental Airport (IAH) from 4 p.m. to 8:59 p.m. Saturday as the government shutdown drags on. The FAA said flights departing from Bush Airport are delayed on average by 42 minutes due to staffing issues.

Hundreds of flights across the United States have been canceled due to the government shutdown. Federal officials warn more cuts could be coming if the shutdown continues.

St. Paul International Airport (MSP) are feeling the impact of the Federal Aviation Administration's (FAA) order to reduce flights amid a government shutdown.

FAA orders phased flight operation reductions at high-impact airports, including Honolulu's HNL, due to staffing issues.

"This is about where’s the pressure and how do we alleviate the pressure," Transportation Secretary Sean Duffy said.

Transportation Secretary Sean Duffy joins Fox & Friends to discuss the Federal Aviation Administration’s 10% flight reduction plan, air traffic controller shortages, and how the prolonged government shutdown could disrupt holiday travel nationwide.