Hahn Air is a minor German airline headquartered in Dreieich, offering business jet scheduled and charter flights within Europe from its base at Düsseldorf Airport.It has IATA code HR.The company's core business, however, is a ticketing solution that gives travel agencies access to airlines via computer reservation systems and allows them to issue tickets on the Hahn Air HR-169 document. The company also offers distribution services for other airlines, such as tariff and flight plan transmission. Hahn Air has signed contracts with more than 350 air, rail and shuttle partners. Internationally, over 100,000 travel agencies use Hahn Air's services. Hahn Air Group is the parent company of Hahn Air.