The action will get under way on 31 May and run through to 28 June. The Foreign Office has warned travellers they could face delays as a result.
Portugal is among only a handful of recognisable destinations on the UK government’s green list; thousands of British holidaymakers have already headed for the Algarve coast and Madeira over the past week after Portugal lifted its ban on non-essential travel on 17 May.
Action is planned at Lisbon airport between 5am and 9am from 1-15 June, and between 9am and midday at Faro over the same period.
