Priceline offers a Norwegian Cruise Line 4-Night Caribbean Cruise for Two bundled with a 4-category room upgrade with prices starting at $598, as seen on Travelzoo. That's the fourth least-expensive 4-night Norwegian Cruise Line cruise we've seen to the Caribbean. It's also a current low for this cruise by $100. This roundtrip cruise departs from Miami, FL, on February 3 with stops in Cozumel, Mexico and Key West, FL. Some restrictions may apply; fees, government taxes, and fuel supplements are additional. This travel deal ends January 31.