Around 15,000 Border Force members of the PCS union voted in favour of strike action last month in a dispute over pay pensions, jobs and redundancy.
The union on Wednesday (7 December) confirmed members would walk out over from 23-26 December and again from 28-31 December.
Action will take place at six UK airports – Birmingham, Cardiff, Gatwick, Glasgow, Heathrow (Terminals 2-5) and Manchester – as well as at the Port of Newhaven.
Mark Serwotka, general secretary of the PCS union, said the strikes would have a "major effect" on people using the UK’s public services.
