Norwegian Cruise Line offers a Norwegian Cruise Line 4-Night Western Caribbean Cruise for Two bundled with a $15 onboard credit with prices starting at $498, as seen on Travelzoo. That's tied as the second least-expensive 4-night Caribbean cruise we've seen from Norwegian. Assuming you use the credit, it's also a current low for this cruise by $15. 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 26.

Of note, Norwegian Cruise Line offers other Caribbean cruises with prices starting at $379 per person. Scroll down to see them all.