Irish Ferries is cutting 2018 ferry fares to Ireland by 20% for bookings made by 23 January.
The savings are on all cruise ferry sailings between the UK and Ireland, and on the Dublin Swift fastcraft.
The offer is available for travel between 4 January and 31 August 2018, which includes all peak summer holiday dates.
“Travel to Ireland is big news for 2018, with the beautiful west coast splashed all over cinema screens in the new Star Wars movie,” said head of passenger sales Dermot Merrigan.
“This is a brilliant offer for agents to use to tempt families and other travellers to commit to a trip to Ireland now – and make significant savings.”
Bookings must be made online, 48 hours in advance of travel, and by midnight on 23 January.
Fares for a car and driver start at £79 one-way.
With the offer, a family of two adults and two children under 16 travelling by car in August with reservations in Club Class can save £125.