- Niki is an Austrian low-cost airline that was founded in 2003. It initially operated as a subsidiary of Air Berlin, but became an independent airline in 2017 after Air Berlin filed for bankruptcy. Niki primarily offers flights to popular vacation destinations in Europe, including Spain, Greece, Italy, and Turkey. The airline has a fleet of Airbus aircraft and has been known for its affordable fares and leisure-focused services. In 2018, Niki was acquired by the International Airlines Group (IAG) and became a part of the Level brand. However, in 2019, IAG announced the discontinuation of the Niki brand and the integration of its operations into the Vueling airline.