I would suggest trying to look at some travel sites such as Travelocity, Priceline, expedia or go directly to the cruise line sites such as Royal Caribbean, Princess, Norwegian, or Carnival.
You can find information on cruise ship deals at a reliable website that provides you with discounted cruises, last-minute cruises, cruises for vacation at Carnival.com
Smartertravel.com has a great write up on how to find a great cruise deals. Details as to what time of year is the cheapest etc. Also Cruisecritic.com can help find the best cruise deals around.
The cheapest cruise would be The Princess Cruise line, if you go to their website, you should be able to find more information, they should have package deal and the price you want.
These deals are constantly changing depending on supply and demand. Expedia is a great place to find up to date information about norwegian cruise line deals.
Cruise deals for every budget. Find a mini-cruise, a family cruise, a Caribbean cruise or one closer to home - our cheap cruise deals enable any holidaymaker to travel the world.
Alaska cruise deals can be found at all travel agencies offices. Just ask the people working there for deals on Alaska cruises and they'll tell you information on their deals.
One can find more information on Western Mediterranean Cruises through Carnival, NCL, and Princess Cruise Lines. Other places to look for more information include Western Mediterranean Cruise Basics and Cruise Critic.
One may find Crystal Cruise deals through Priceline and American discount Cruises. Last minute deals are offered when the cruise operator needs to fill empty spots.
You can check out travelocity.com or orbitz.com to book a cruise vacation and get various deals and specials. Depending on the time you want to travel you can find very cheap packages.
Cruise Critic, Dealchecker UK, Iglu Cruise, Cheap Cruises UK, Cruise Marketplace and Cruise UK offer the latest information on discounted Baltic cruises.,
Travelocity offers the best deals on last minute vacations. The charge the lowest premium on last minutes deals and would definitely be a great place to start looking for information on them.