Figures from Avinor show that air traffic increased by 3.7 percent compared with May last year. Off-shore increased for the first time since 2014. A total of 4,637,714 passengers travelled to and from Avinor’s airports in May, an increase of 3.7 percent. All four of the biggest airports experienced passenger growth. Oslo airport experienced growth of 5.5 percent, and the growth continued in Tromsø in...