The discounts apply to eight voyages ranging from 12 to 23 days in the 2015/16 season. Bookings must be made by Dec. 31, 2014.
Available dates are 2015's Oct. 31 'Antarctica, Falklands and South Georgia,' a 22-day program, with a similar 20-day itinerary on Nov. 20. The 12-day 'Classic Antarctica' cruises sail Dec. 8, and Jan. 7 and Jan. 17 in 2016. A 12-day 'Christmas in Antarctica' cruise departs Dec. 18, while 'New Year in Antarctica' leaves Dec. 28.
Early bird reservations save passengers from $1,424 to $6,499 per person, depending on the departure date and stateroom category.
For example, 25% savings apply to a triple classic stateroom, 250 square feet with two twin beds (or a king-sized bed) and sofa bed, with savings of $2,124 to $3,399 per person, triple occupancy. And 25% savings are available for the owner's suite, a 437-square-foot room with two twin beds or a king-sized bed and a private deck. The savings are $4,099 to $6,499 per person, double occupancy.
Sea Spirit carries 114 passengers.