Flights were diverted and others grounded throughout the Midwest after a temporary outage at a Minnesota air traffic control facility caused issues, the FAA said.
Travelers should expect delays when they fly through San Francisco International Airport after the Federal Aviation Administration this week cut a third of its arrivals because of safety concerns and runway construction.
The sudden and surprising airspace closure over El Paso, Texas, on Wednesday stemmed from the Pentagon's plans to test a laser for use in shooting down drones used by Mexican drug cartels, according to three people familiar with the situation.
Over 174 flights have been delayed while only two have been canceled at SFO, according to flight tracking website FlightAware. Delays are currently averaging 55 minutes, but the FAA advisory warns it may extend beyond two hours.
"Super Bowl 60 is a no-drone zone, and all flight restrictions will be actively enforced," said Super Bowl authorities.
What could have been a major disaster was averted with just seconds to spare at a busy U.S. airport.