I read on IATA for Greece:
- Passengers are subject to medical screening and quarantine for 1 or 14 days.
On what basis do the Greek authorities decide how long a passenger entering Greece will stay in quarantine?
Full IATA information:
Greece (Published 27.07.2020):
- Passengers are not allowed to enter until 31 July 2020. -This does not apply to:
- nationals of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland (Rep.), Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden and Switzerland and their family members;
- British nationals and their family members;
- nationals of Algeria, Australia, Canada, Georgia, Japan, Korea (Rep.), Montenegro, Morocco, New Zealand, Rwanda, Thailand, Tunisia and Uruguay;
- residents of Algeria, Australia, Canada, Georgia, Japan, Korea (Rep.), Montenegro, Morocco, New Zealand, Rwanda, Thailand, Tunisia and Uruguay;
- passengers with a residence permit issued by Greece. A certificate of application for renewal of a residence permit is not accepted;
- passengers with a residence permit issued by Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Hungary, Iceland, Ireland (Rep.), Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland or the United Kingdom;
- passengers with a long term visa issued by Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland (Rep.), Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland or the United Kingdom;
- nationals of North Macedonia (Rep.) returning via Thessaloniki (SKG) to continue by road to North Macedonia (Rep.). Their trip must be prearranged by the authorities;
- military personnel. 2. Passengers are subject to medical screening and quarantine for 1 or 14 days.
- Flights from Turkey are suspended until 31 July 2020.
- This does not apply to humanitarian, medevac, military and repatriation flights.
- Passengers must complete a "Passenger Locator Form (PLF)" at least 24 hours before check-in at https://travel.gov.gr/#/ . A QR code generated from the completed form must be presented upon arrival.
- Passengers arriving from Albania and North Macedonia (Rep.) must arrive at Athens (ATH).
- Effective 28 July 2020 and until 4 August 2020, passengers arriving from Bulgaria or Romania must have a medical certificate with a negative Coronavirus (COVID-19) PCR test result issued at most 72 hours before arrival.
- This does not apply to nationals of Greece and passengers with a residence permit issued by Greece.