“In the case of Portugal, according to the latest resolution of the Council of Ministers, the use of a mask remains mandatory in public transport, including air transport”, reported Jornal Económico.

Ryanair announced on Wednesday that it will no longer be mandatory to wear a mask on most flights operated by the Irish flag company within the European Union (EU) “with the exception of flights to and from destinations where EU governments still require the mandatory use of masks on public transport. In this way, the mask will continue to be mandatory on flights to and from Portugal, Austria, Cyprus, the Czech Republic, Estonia, Germany, Greece, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands and Spain.

"We hope that these countries will relax their mask rules in the coming days, in accordance with these new health guidelines from the EASA and the ECDC", the company's CEO also says, quoted in a statement.

easyJet also said in a statement that it does not require “customers and crew” to wear masks “on flights where masks are not legally required at both ends of the route”, signalling that the company follows “the legal requirements of all the countries for which they operate. In practice, this means that “when flying to or from countries where mask requirements remain in force”, as is the case in Portugal, the company continues to impose mandatory mask use.

The maintenance of this mandatory requirement in Portugal follows Decree-Law Health establishments and services, residential structures for the elderly (or equivalent), as well as for collective passenger transport, including TVDE and air transport.

On Wednesday, the European Aviation Safety Agency (EASA) and the European Center for Disease Prevention and Control (ECDC) announced that they will no longer recommend wearing a mask at airports and on flights in Europe. The new rules take effect on Monday. However, the two entities warned that the rules regarding masks will continue to vary by airline beyond that date. On the same day, France announced that, as of Monday, it will also no longer be mandatory to wear a mask on public transport, including on planes.