Allegiant Air Appleton Office Travelers in the Fox Valley region can obtain vital services including airline reservations, customer service, and travel information from the Allegiant Air Appleton Office. The office, which is conveniently located in Appleton, Wisconsin, is manned by helpful specialists who are available to answer questions on policies, timetables, and destinations. Allegiant Air makes travel more affordable for both pleasure and business visitors by providing low-cost flights to well-known locations. For travelers seeking new experiences, the Appleton Office guarantees a smooth journey with a dedication to efficiency and customer care.