 And Americans are traveling this summer and accumulating debt in order to do it. That's according to Bankrate. 36% of Americans, they say, plan to take on debt in order to travel this summer. 26% of those summer travelers say they intend to use a credit card to pay for the vacation over multiple billing cycles. With the average credit card charging more than 20% interest at the moment, it's worrisome to many financial experts as it represents a lot of people taking on expensive debt.