WorldPerks members with a credit card billing address in the U.S. 50, Guam, Puerto Rico or the U.S. Virgin Islands may transfer miles between accounts for a fee until the end of the year. You may transfer 5,000-10,000 miles to up to three recipients in one transaction, at a cost of $0.01 per mile plus a $25 processing fee. A maximum of 50,000 miles may be transferred from your account per calendar year.