Sail from L.A. to mark Princess Cruises’ 50th year in Alaska

Among the cruises available are 12-day round-trip voyages from Los Angeles, visiting the Inside Passage; Glacier Bay National Park and Preserve, a UNESCO world heritage site; as well as Juneau, Ketchikan and Skagway. Prices start at $999 per person, double occupancy, plus fees, taxes and port charges.