American Airlines is making the biggest changes to its Admirals Club membership program in years, introducing a new lower-priced membership for solo travelers while dramatically increasing the cost of its traditional lounge membership. The new pricing substantially changes the math for travelers considering purchasing an Admirals Club membership outright. One thing that isn't changing is the cost of an Admirals Club One-Day Pass, which remains $79 when available. Related: 3 reasons why this is the best card for Admirals Club lounge accessBottom lineAmerican Airlines is overhauling its Admirals Club membership program, replacing its existing membership structure with two new options while dramatically increasing the cost of traditional lounge memberships. The new $750 single membership offers a less expensive alternative for solo travelers who only need Admirals Club access.