Visit your favorite cruise line's web site and perform a search for a cruise. Choose a departure port and destination. Since you're searching for a last minute cruise you will likely choose the current or following month when asked for your travel dates.
View the search results for all last minute cruises with available staterooms provided to you by the cruise line. Choose the one that best suits your vacation needs by clicking on the link to begin booking your cruise.
Enter your passenger information for everyone in your stateroom -- name, address, birth dates - choose the type of stateroom you want and provide your payment information. Last minute cruises must be paid in full at the time of booking.
Print your cruise documents and start packing.