If you take a look at the Admirals Club access page, you’ll see that there are a number of ways you can get access to the lounge. A membership is one of them, and the cost goes down with higher tiers of AAdvantage status. The membership is also included as part of certain credit cards’ annual fees or can even be purchased with miles. Some companies may purchase memberships for their employees and executives, and memberships may be included as part of a company’s special contract with an airline they use regularly. If you fly dozens of times a year on business and need to maximize your working time, the value of the membership is easier to justify. People may also have access to other lounges through their credit cards, Priority Pass, and other schemes.
But many people have access through other mechanisms. Anyone in first or business class on American or a oneworld airline for international and US transcon flights has lounge access, as do AAdvantage Platinum and higher members on all international flights. oneworld Emerald and Sapphire members with status from an airline other than American have access on all American and oneworld flights. And people can buy one-time day passes.
Those groups cover a lot of people who don’t have memberships. Just the first and business class passengers on international flights will be a good number of lounge visitors. Not all of them are members.
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