We advise attendees to check the Visit Portugal website, before travelling to Portugal. 

Currently, the protocols for individuals flying into Portugal include: RT-PCR Test (or similar NAAT test) 72 hours before boarding, or Rapid Antigen Test 48 hours before boarding, or a valid EU Digital COVID Certificate

All passengers need to fill a Passenger Locator Card (individually) before departure to Portugal or on board at https://portugalcleanandsafe.pt/en/passenger-locator-card

Information regarding certain jurisdictions with different protocols is detailed here.