Kayak is excellent, but so is cheaptickets.com. Try BOTH, as well as the others mentioned.
Editing to add: cheaptickets doesn't let you book starting in a foreign city (i.e., Hong Kong or Madrid).
[size=8]Too Many To List - 416� days & counting on Radisson/Regent, and 150+� days on 8 other lines, with one cruise booked next month on the Mariner, Miami to Honolulu 22 days
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