1 AAdvantage Phone Number: 1-800-882-8880. 2  AAdvantage Citibank Card: 1-888-766-2484. 3  American Airlines Vacations: 1-800-321-2121. 4  Automated Flight Information (English): 1-800-223-5436.  Automated Flight Information (Spanish): 1-800-228-8356.
A flexible spending account (FSA), also known as a flexible spending arrangement, is one of a number of tax-advantaged financial accounts that can be set up through a cafeteria plan of an employer in the United States.
FSA accounts normally cover anything medically related that is not cosmetic. Most adults undergo invisalign either for malocclusion or crowding. When teeth are crowded they are harder to clean and can lead to gum disease. This is something that is not cosmetic and should be covered by an FSA account.