Air Serbia Returns To Geneva After 36 Years Upgrading From The DC-9 Advertisement: Air Serbia will launch flights from Belgrade Nikola Tesla Airport to Geneva on 1st March and increase both the capacity and frequency of its flights to Zurich on 2nd February. When its aircraft lands in Geneva in March, it will not be Air Serbia’s first time. In 1985, when it was still operating under the brand name JAT, the airline used to operate the Ljubljana – Zurich – Geneva – Ljubljana triangle route twice weekly, with its DC-9 aircraft. Air Serbia’s A320 pictured in Zurich, which is currently the airline’s only destination in Switzerland. Photo: Getty Images