Deutsche Lufthansa AG ,commonly known as Lufthansa, is the flag carrier and largest German airline which, when combined with its subsidiaries, is the second largest airline in Europe in terms of passengers carried.

Lufthansa is one of the five founding members of Star Alliance, the world's largest airline alliance, formed in 1997. In total, the group has over 700 aircraft, making it one of the largest airline fleets in the world.

Lufthansa's registered office and corporate headquarters are in Cologne. The main operations base, called Lufthansa Aviation Center, is at Lufthansa's primary hub at Frankfurt Airport, and its secondary hub is at Munich Airport.

Besides its own services, and owning subsidiary passenger airlines Austrian Airlines, Swiss International Air Lines, and Eurowings including Germanwwings (referred to in English by Lufthansa as its Passenger Airline Group), Deutsche Lufthansa AG owns several aviation-related companies, such as Lufthansa and LSG Sky Chefs, as part of the Lufthansa Group.

According to brandirectory.com, Lufthansa is the most valuable airline in Europe 2020, with brand value of over 7.418 million US dollar.

According to brandirectory.com and en.wikipedia