The traffic is mainly dominated by easyJet (46.9%) following by Swiss (12.4%) and British Airways (4.5%), etc. GVA has two passengers terminals T1 and T2. T1 is the principal used on a daily basis but the T2 is activated during the winter…
We're awaiting further info as to the reason behind this and if it's going to be permanent. For now, you can get info about arriving flights (sans registrations and linked departing flights) here.