Through March 31, 2011 when you book a balcony or suite through United Cruises, you’ll get up to 20,000 miles–and you can double the miles if you pay with your United Airlines Chase Visa. To get the full benefit of this offer, your cruise must be 13 nights or more. You will get 10,000 award miles plus 10,000 bonus miles with a balcony or suite, and to double the total miles earned to 40,000 miles, you’ll need to charge the cruise on your UA Visa.

If your cruise is one to five days, you’ll earn 1,500 award miles, plus 1,500 for a balcony or suite for a total of 3,000 miles or 6,000 miles with the credit card. A six to eight day cruise earns 3,000 award miles plus 3,000 for a balcony or suite and a nine to 12 day cruise earns 5,000 award miles plus another 5,000 for a balcony or suite.

You can also save up to 75 percent off. United is also running a United Cruises 1,000,000 Miles Sweepstakes offering a grand prize of a seven-night Caribbean cruise for two in an ocean-view stateroom and 500,000 miles or you could win one of five 100,000 miles prizes. To enter the sweepstakes, visit http://insideflyerus.wpengine.com/link/?3936