Delta to further limit access to its Sky Club airport lounges in effort to reduce crowds

American Express credit card holders and other Delta airline passengers accustomed to availing themselves of the free food and cushy digs at the carrier's Sky Club lounges may soon have to find a new place to recharge before a flight. 

That's because the Atlanta-based airline plans to discontinue popular perks granting certain American Express cardholders and other premium cardholders unlimited access to its Sky Club lounges, in an effort to reduce crowds, the company said Wednesday in a statement.

"These changes are part of Delta's ongoing efforts to help balance the popularity of the Clubs with the premium experience they provide for our guests," according to the company.