The best discounts on Alaskan cruises are for cruises leaving during the months of May and September. Alaskan cruises run from May through September. The most expensive times for an Alaskan cruise are during the warmer months of July and August.
Silversea Cruises offers the best Alaska cruises because they use 382-passenger ships.
Royal Caribbean Norwegian Pearl Carnival and Disney cruises.
The best would be through the Alaskan Line. They have the most cruises. Although, many other do go to Alaska.
One can find find a lot of cruises to the outer banks of Alaska on online cruise agencies all over the internet. Examples are "Best Holiday Cruises" and "The Boat Company Southeast Alaska".
The best way to get a cheap cruise rate is to bundle and to watch for major discount rates. Many cruises will offer promotional discounts as well as senior discounts. I would recommend seeing: http://www.mustcruise.com/cruise_info/seniors.html.
According to the Best Price Cruises website, the best deal for a 6 to 9 night cruise which will cost $499. Best Price Cruise is basically like Expedia, but for cruises.
While there are several sites offering Alaskan Cruises, the website alaskancruise.com specializes in offering discounts. The pricing for 7 night cruises starts at $549 per person. Discounts of up to 75% off are available for those within 90 days of their departure date, so last minute travel is certainly cheap.
November and March
Royal Caribbean or Carnival cruises.
There are great pices available at AlaskanCruise.com
Star Princess Cruises offer many great destination sites. Star Princess Cruises offer cruises for Alaska, Europe, the Caribbean, Australia, and many other foreign places.
http://travel.travelocity.com/ecruise/Cruise/Alaska-Cruises is a great website so you can book trips to travel to Alaska and choose when to go to Alaska.