WorldPerks members have until Aug. 31 to combine miles and cash for travel from select cities in the 48 contiguous states or Canada to Honolulu, Hawaii. Travel must be completed by Dec. 15 and a two-night minimum stay is required.

To be eligible for the offer, members must have at least 20,000 miles in their account and a credit card with a U.S. or Canadian billing address. You can save another 500 miles by completing the transaction online.

The amount of money and the number of miles required for your trip will depend on the city from which you are departing and your class of travel. For example, a first-class ticket from Seattle or Los Angeles to Honolulu will cost $615 and 35,000 miles, and a coach-class ticket between the same cities will run $315 and 20,000 miles.