Cruise.com offers a Princess Cruises 7-Night Alaska Cruise for Two bundled with $100 onboard credit with prices starting at $1,498, as seen on Travelzoo. (If prompted, sign up for the free newsletter to see this deal.) That's $448 less than booking direct and the best price we could find for any such cruise in May 2016. This roundtrip cruise aboard the Ruby Princess departs from Seattle, WA, on May 8, 2016 and stops in Ketchikan, AK; Tracy Arm, AK, (scenic cruising); Juneau, AK; Skagway, AK; and Victoria, CA. This travel deal ends December 9.
Of note: the same cruise offers an Oceanview Room for Two with $100 onboard credit for $1,588. That's just $100 more than an interior room and the best price we could find for this cabin category by $648.