Manchester Airport bosses have issued a warning to passengers due to travel between now and the New Year.
A tweet from the airport's official account on Monday said passengers may experience longer queues than normal. It comes as the Public and Commercial Service (PCS) union has announced Civil Service industrial action that will impact Border Force services.
Border Force staff at airports are due to walk out on December 23, 24, 25, 26, 28, 29, 30 and 31, in a row over pay.