The country’s foreign minister said anyone arriving from May 17 must have a negative PCR result within the previous 72 hours.
Existing travel restrictions on travel to the country from Britain will end on Sunday, the minister confirmed in a statement issued by Portugal’s tourist office, Visit Portugal.
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It follows an earlier uncertainty after the the government prolonged its “state of calamity”.
It later emerged that this was linked to domestic issues with the coronavirus that could involve local lockdowns or the mandatory wearing of a mask in some settings.
Prime Minister Boris Johnson announced on Tuesday that from May 17 the restriction on ‘stay in the UK’ will be lifted, meaning people will be able to travel to green list countries like Portugal without s ‘isolate on their return.
The latest announcement will come as a relief for holiday companies who have reported huge demand for travel to Portugal following the publication of the green list.
EasyJet has added 105,000 more seats to its flights serving green tier destinations, while TUI plans to use planes that normally operate long-haul routes to cope with the influx of people booked to get there.
Thousands of British football fans hope to make it to Porto au mainland Portugal for the all-English Champions League final between Manchester City and Chelsea on May 29.
UEFA had previously confirmed that 6,000 tickets would be made available to each of the finalists, with the final capacity limit at the Estadio do Dragao still to be determined.
Paul Charles, managing director of travel consultancy The PC Agency, said: “It’s green to start on Monday.
“Travel abroad will resume as planned in the Prime Minister’s roadmap and kudos to Portugal for contributing.
“Travel can be done in a safe and responsible manner. We now need to see a larger green list from early June. “
Portugal is the only country in southern Europe to appear on the British green list of destinations without quarantine so far.
In neighboring Spain, Trade and Tourism Minister Reyes Maroto said her government was in “constant” consultations with Britain to try to change its travel status.