Direct Line Cruises offers a Celebrity Cruises Line 5-Night Caribbean Cruise for Two with prices starting at $338, as provided by Dunhill Travel. (Scroll down to "December 14" to see this cruise.) That's the second-cheapest 5-night Caribbean cruise we've seen from any cruise liner this year. It's also the lowest current rate we could find for this cruise by $178. This roundtrip cruise departs from Fort Lauderdale, FL, on December 14 and includes stops in Key West, FL, and Cozumel, Mexico. Some restrictions may apply; fees, government taxes, and fuel supplements are additional. This travel deal ends December 12.