Skyguide again achieved very high punctuality levels last year. Switzerland’s air navigation services provider handled 96.5% of all the year’s flights without delays. The total volume of air traffic using the airspace managed by skyguide in 2013 was 2.5% down on the prior-year period. Geneva Airport saw a 1.6% fall in its traffic volume, while traffic at Zurich Airport was down 2.4%. The declines are attributable to the difficult economic situation, high oil prices and increased seat load factors.