The Appleton Allegiant Air Appleton Office location of Allegiant Air is a major hub for visitors to the Wisconsin Fox Cities. In addition to arranging flights, the office provides customer service and help with travel arrangements for both business and pleasure guests. Allegiant Air is well-known for providing accessible nonstop flights to well-known places at affordable prices, hence enabling many people to travel by air. The Appleton location is committed to provide prompt assistance and making travel arrangements simple for clients. Whether you’re traveling for business or pleasure, Allegiant Air is dedicated to making your trip easy.