Update (4:20pm ET, Nov. 5): This sale has been extended for bookings through Nov. 12.  

Book now to save 50% on Mediterranean cruises this spring and summer. Get swept away to Italy, Greece and Turkey for nine nights for just $699 per person. Plus, get a choice of either a $200 credit per cabin or prepaid gratuities.

Depart March 27 and sail roundtrip from Rome on Royal Caribbean's Mariner of the Seas. Ports of call include Sicily, Athens, Kusadasi, Rhodes, Chania and Capri.  

Peak season dates and longer Europe cruises are also discounted as part of this larger Europe Extravaganza Sale on Royal Caribbean. 

For example, sail for 10 nights departing on April 22 and June 3 for $999 per person on the Splendour of the Seas. These sail roundtrip from Venice and include stops in the Greek islands of Mykonos and Santorini.

All cruises sailing in 2011 also come with a free dinner for two in the specialty restaurant onboard. Oceanview and balcony cabins come with even more bonuses.

Click here for more information. This sale ends Friday, Nov. 5.

Travelzoo Tip: Travelers who add airfare to this cruise using Royal Caribbean's "Choice Air" program will not only have access to the lowest fares in market, but will be assured of getting to the ship (at no additional cost) in the event that a flight gets delayed or cancelled.