National ground station: Flightradar24 shows extent of flight disruptions More than 10,000 flights have been canceled across the US due to a national ground outage, with delays and cancellations spreading to international routes, including London's Heathrow Airport, as airlines struggle to resume normal operations.

National ground station: Flightradar24 shows extent of flight disruptions More than 10,000 flights have been canceled across the US due to a national ground outage, with delays and cancellations spreading to international routes, including London's Heathrow Airport, as airlines struggle to resume normal operations.