Update (4:41p.m. ET, April 11): Departures on May 26 are now sold out at this price; this date is now available for $449 per person.
For US$399 per person, explore three of the Mediterranean's most popular countries on a seven-night cruise -- including all meals and entertainment. This is US$525 per person off the cost of similar cruises.
This deal also includes US$75 in onboard credit per cabin to spend on anything from drinks to shore excursions.
Sail roundtrip from Rome aboard Royal Caribbean's Navigator of the Seas on May 5, 12, 19 or 26. For US$449-US$499 per person, depart June 2 or 9 and score US$150 in onboard credit per cabin.
Cruise to the Sicilian coastal city of Messina, followed by the Greek city of Athens where you can try a uniquely Greek drink, ouzo. Next visit the Turkish seaside resort town of Kusadasi before sailing back to Greece to enjoy the fairy-tale island of Crete, where striking blue-and-white-colored vistas await.
This is part of a larger sale on Royal Caribbean for Europe sailings through November -- including discounts on upgraded cabins that come with extras such as onboard credits, pre-paid gratuities, spa treatments and specialty dining.