FAA expects U.S. flights to return to normal by Sunday night after ground stop

Flight delays and cancellations are expected to continue Saturday after the FAA lifted its nationwide ground stop Friday night. FAA Administrator Bryan Bedford said he expects U.S. flight schedules to return to normal by the end of Sunday.

Transportation Secretary Sean Duffy said the air traffic control system became overloaded while a contractor was replacing old copper wiring with fiber-optic cable. Investigators are looking into whether contractor error or faulty equipment caused the outage. Duffy said officials do not believe it was a cyberattack.

The FAA halted departures nationwide for more than four hours Friday after intermittent outages disrupted air traffic control communications and radar.