Greece: ATC strike: 26 Sep – 10:00-13:00 – will impact flights at those times

From Living in Greece: Flights to/from Greece, international and domestic, will be impacted with Greek air traffic controller strike from 10:00-13:00 local time. —

Flights arriving/departing outside this 3-hour window will be unaffected. At most, they may be delayed because of the disruption.
It is NOT an airline strike or airport strike. When ATCs strike, airports must suspend service and airlines have no choice but to cancel or reschedule flights.
Only flights associated with emergencies, rescue, medical, military and heads of state will take place during this period.

Aegean Airlines cancels 6 flights and reschedules 16 others. –If you are affected or have questions, call 80 111 20000 (from a landline in Greece) and +30 210 626 1000 (from outside Greece or any cell/mobile phone).
easyJet has rescheduled 30 flights to/from Greece. —
Olympic Air cancels 14 flights, reschedules 33 others. –If you are affected or have questions, call 801 801 0101 (from a landline in Greece) or +30 210 355 0500 (from outside Greece or any cell/mobile phone).
Other airlines: You are encouraged to call your airline or booking agent, if your flight is departing from or landing in Greece from 10:00-13:00 local time.

Credit link: http://livingingreece.gr/strikes/#ixzz27VrPjJPC