Hilton HHonors severed the relationship they had had with the Southwest and discontinued the ability to earn Rapid Rewards points from Hilton stays at the end of last year. To counter this change Hilton is having several promotions going on for double or triple miles with five airline partners. I have already written about the promotion with Delta for 2012 bonus SkyMiles for stays or two days or longer. The beauty of this promotion with Delta is that all the Hilton family of hotels are participating.
There are three other ongoing promotions that you can combine with these. The other promotions are Resort Escapes for free night certificates, More Points for extra points, and Visa Infinite promotion for instant Gold status and 40K HH after four stays.
You can earn triple miles with US Airways Dividend miles, and double miles with Air Canada’s Aeroplan and American’s AAdvantage. You need to designate the airline as the double dip partner and choose the variable or fixed miles. With these airlines you really need to check the participating properties. The list is rather short.