Travelers scrambled on Wednesday to make alternate plans after a computer glitch grounded flights for more than an hour at airports across the country.
Lines of airplanes stacked up on taxiways at LAX while federal officials worked to correct the "technical issues" that occurred at the FAA's Los Angeles Air Traffic Control Center.
Meanwhile, flights bound for Southern California from airports nationwide were also ordered about 2:20 p.m. to remain on the ground, according to the FAA.
Travelers at LAX, Bob Hope Airport in Burbank, John Wayne Airport in Orange County, Ontario and Oakland airports reported flights being halted.
"Some flights were diverted and the agency issued a nationwide groundstop for flights heading into the airspace managed by the center. The agency is gradually restoring the system," FAA officials said.
Airports resumed flights by 3:20 p.m.
NBC4 viewers said planes had to turn around mid-flight.
"My plane was supposed to land @ LAX from Oakland and we had to turnaround!" Janice Ponce Brown said via Facebook.
Another viewer said a flight into John Wayne Airport was "in holding status" and not able to land.
Travelers were urged to contact their airlines for flight information. LAX officials said to expect a one-hour delay on all departing flights.