Marella Cruises has extended its operational pause into April.
All European sailings due to depart up to 31 March have been cancelled, and all long-haul sailings up to 30 April.
The line cited to "continued uncertainty" arising from the Covid-19 pandemic for its decision.
Impacted itineraries include:
Customers booked on affected cruises will be contacted directly with a range of flexible options.
These include amending their booking for free with a rebooking incentive; receiving a refund credit note along with an incentive; or cancelling and requesting a full refund.