Update (10:16 pm ET, Dec. 21): This sale has been extended for bookings through Dec. 25. The Jan. 24 sailing for $189 per person is now sold out.

For $189 per person, island hop in the Caribbean on a four-night cruise on Royal Caribbean’s Liberty of the Seas -- named one of the world's best cruise ships by Conde Nast Traveler this year.

Book by Friday, Dec. 21, and receive a $25 onboard credit per cabin. This deal saves $240 per person on the cost of similar itineraries.

Sail roundtrip from Fort Lauderdale to Cozumel, Mexico, for four nights with these Thursday departures, which make for a long-weekend sailing:

• $189 ... Jan. 24
• $249 ... Feb. 21
• $289 ... March 7

For $289 per person, sail for five nights to Labadee, Haiti, and Falmouth, Jamaica, on Feb. 25.

The ship boasts a rock-climbing wall, ice skating rink, FlowRider surf park, DreamWorks character breakfasts, meet-and-greets and 3-D movies and the musical "Saturday Night Fever."

The above pricing is for an inside cabin, but balcony cabins are also discounted and come with $50 in credit per cabin.

This is part of a larger Royal Caribbean sale that includes six- to eight-night Caribbean cruises with the credits. Depart from Fort Lauderdale on the Independence of the Seas or from Port Canaveral on the Freedom of the Seas -- both Conde Nast Traveler award-winning ships.

Note: Taxes are an additional $84-$120 per person.