Tourism websites said the owner had confirmed the 47,300-gt Costa Celebration (ex Grand Celebration) had gone to an unnamed buyer.
The vessel has just completed its last cruise for the Spanish company and had entered drydock in Marseille to be branded as a Costa vessel.
It had not begun a cruise for Costa, which is rebooking passengers on to another vessel.
TradeWinds reported earlier this year that Iberocruises would be left with one ship when Costa Celebration was transferred.
