Holger Linkweiler

AviAlliance GmbH engages in airport operations and consultancy services for the aviation industry. Its services include technical services, services relating to airport operations, non-aviation, financial services, and services for air traffic management. The firm has holdings in the airports of Athens, Budapest, Düsseldorf, Hamburg and Tirana. The company was founded by Holger Linkweiler in 1997 and is headquartered in Dusseldorf, Germany.

Flughafen Hamburg GmbH provides consulting and other services, both in the airport sector and in other fields. It operates through the following: Aviation, Ground Handling, Center Management, and Real Estate Management. The Aviation division is to maintain, ensure, and enhance safe and smooth flight operations. The Ground Handling division holds the contracts with the airlines along with the shares in ground handling service holding companies. The Center Management division includes all property rentals at Hamburg Airport, the concept and design of retail and food court areas, and the management and marketing of advertising operations. The Real Estate Management division maintains and provides the entire infrastructure for Hamburg Airport. The company was founded in 1911 and is headquartered in Hamburg, Germany.

Sydney Airport Corp. Ltd. owns and operates an airport. It offers airport ground travel plan and signage plans, airport planning approvals, airspace protection, community and the environment, planning application information, airspace protections registration, and community involvement. The company also offers identification and access services. The company is headquartered in Sydney, Australia.

Budapest Airport Budapest Liszt Ferenc Nemzetközi Repülotér Üzemelteto Zrt. engages in the provision of airport operation and management services. It offers flight and travel information, online parking booking, conference and event center, reservations, transport, private lounges, and premium solutions. The company was founded in 1938 and is headquartered in Budapest, Hungary.

Flughafen Düsseldorf GmbH operates an international airport. It offers domestic, international and cargo flight transportation services. The airport serves as an airline hub for Air Berlin and Lufthansa airlines. Flughafen Düsseldorf is headquartered in Düsseldorf, Germany.

AviAlliance Capital GmbH provides investment services for airports. The firm engages in airport investments, funding development, construction and expansion projects The company was founded in 1997 and is headquartered in Dusseldorf, Germany.

Tirana International Airport SHPK provides domestic and international airport services. It develops, operates, and manages Tirana International Airport Nënë Tereza. The company was founded on September 16, 2004 and is headquartered in Tirana, Albania.

World Airport-Partners GmbH & Co. KG engages in the acquisition, holding, management, and sale of participations in companies. It also provides bookkeeping, accounting, human resources, and related services. The company was founded on October 31, 2012 and is headquartered in Dusseldorf, Germany.