India, Jan. 4 -- Air traffic was halted at airports across Greece after a radio frequency disruption, Greek state TV and the country's aviation authority said.

The airspace over Greece suddenly emptied as flights were suspended nationwide.

"Security Check-In Closed Since 9 AM! Due to the ongoing radio frequency failure in Greek airspace (started early January 4, 2026), NO takeoffs possible nationwide. Security check-in & departures halted at Athens International since ~9 AM," Greek City Times posted on X.

"Massive queues building up, passengers stranded. Arrivals landing manually where possible, but many diversions/delays All Greek airports affected - FIR Athens effectively closed. Civil Aviation Authority rushing fixes, but no ETA yet...