On 11 October 1919, the Geneva Grand Council approved the establishment of an "airfield" at Meyrin. In one hundred years, the small airfield at Cointrin has changed a lot. In order to celebrate this incredible adventure, some thirty projects had been planned for the year 2020, under the motto "Our airport, my history".

Unfortunately, the Covid-19 epidemic tarnished the plans and some events had to be cancelled or postponed.  The inaugurations of the Panorama Terrace and the East Wing were postponed until 2021.

The festivities were officially launched on 28 February 2020, at an official ceremony. The terminal was redecorated with the new centenary visual identity for the occasion. Passengers were shown a documentary on the 100 years of Genève Aéroport, including anecdotes, interviews and archive images. In addition to this historical film, Genève Aéroport had published a book retracing 100 years of history with unique photos, archive videos and texts.

In September, 24 flags in the colours of the airport's centenary were flown on the Mont Blanc bridge. Shortly afterwards, the Château de Voltaire (Ferney-Voltaire) hosted a photo exhibition paying tribute to the 1956 agreement between France and Switzerland. Finally, Geneva Airport organised two online conferences in partnership with the University of Geneva.

On the occasion of this anniversary, Genève Aéroport wanted to thank its employees for their work and commitment. The establishment therefore offered each employee a Swiss made watch that was designed in a family-owned factory. The watch, along with a number of other objects for the centenary, were put on sale in the new Genève Aéroport e-shop.