United Airlines Atlanta Office United Airlines will have its office situated at the United Airlines Atlanta Office where customers can easily receive travel assistance. Services will include assistance in making flight reservations, ticketing, and inquiry about baggage at ATL. The office also caters to complaints or any other issues a passenger may be facing while traveling. Dedicated staff at the United Airlines ATL office ensure a hassle-free operation for its customers. The office is located within the airport, easily accessible to passengers flying out of or arriving in Atlanta.  This makes travel assistance at one of the busiest airports in the world very easy and efficient.