Cruise.com via ShermansTravel offers a Royal Caribbean Cruise Line 7-Night Alaska Cruise for Two with prices starting from $1,097. Assuming you'll use the credit, that's the lowest price we could find by $221. This cruise aboard the Radiance of the Seas departs on May 17, 2019, from Vancouver, Canada, with debarkation in Seward, Alaska. Book this travel deal by August 15.