<prompt> Human: Looking for some advice on what will best benefit my credit score. I have 4 credit cards. Two are paid off in full and not used, but Ive had them for 12 years and 6 years. The other two I use daily, and they are rewards cards. Ive had them for 3 years and 1 year. They pay for themselves in airline miles and baggage fees I travel quite a bit for work and personal so I would like to retain those two. Should I close my two long-standing cards? Their credit limits are 5400 and 16,000. Will closing them hurt or help my credit score? Im currently fluctuating between a score of 720-740.  <response>: Id keep them open. Average length of credit history is a factor, so closing them would make your average length much lower. 