A flash sale by Fred Olsen Cruise Lines this weekend sees additional discounts of up to £500 being offered.
The extra money off deals cover 12 sailings for new bookings made by February 21.
Lead-in rates start at £649 per person with the £500 discount bringing the price of a 23-night Arctic cruise by Bolette from Newcastle on June 1 down to £2,999pp plus a free drinks package or £345 on board spending.
Other itineraries including extra discounts in the short-term promotion include a 14-night sailing by Balmoral from Southampton on May 12 to the Baltic including a transit of the Kiel Canal in Germany, now cut by £200 to £1,499pp.
A seven-night cruise to Ireland and Scotland by Borealis from Liverpool on July 23 is discounted by £150 to £1,149pp.
Sales and marketing director Jackie Martin said: “After a record-breaking January, we wanted to build some extra excitement before our cruise sale comes to a close at the end of the month – but these additional offers are only here until Tuesday.
“There are a fantastic selection of sailings featured, including visiting Scandinavian capitals to delve deeper into Viking history or enjoying scenic cruising around the Scottish isles with the chance to enjoy some memorable wildlife encounters.”