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Opened in May 2025, the American Airlines Flagship Lounge at Philadelphia airport marks the dawn of a new era for the airline’s Business class passengers traveling on long-haul international and transcontinental flights and AAdvantage Platinum members traveling internationally. The space—a former Admirals Club and US Airways club—has undergone a dramatic makeover. The Flagship Lounge sports American Airline’s latest design, which was introduced to wide acclaim at [Washington Reagan airport](https://loungereview.com/lounges/american-airlines-admirals-club-dca-terminal-e/). The elegant residential ensemble features Earth tones, plush carpets, natural materials, glowing LED fireplaces, and soft lighting which will make you want to linger.