Lounge Review American Flagship Lounge Miami airport concourse D. You have access to the loungeas a first class passenger, business class (international) passenger or if have a oneworld sapphire or emerald status. Location The American Flagship Lounge Miami is located in Concourse D, after security on the first floor. You can also access the lounge … Continue reading Lounge Review: American Flagship Lounge Miami Concourse D