 Inter @-@ Island flights are available from Kirkwall to several Orkney islands and from the Shetland Mainland to most of the inhabited islands including those from Tingwall Airport . There are frequent charter flights from Aberdeen to <unk> near Sullom Voe , which are used to transport oilfield workers and this small terminal has the fifth largest number of international passengers in Scotland . The scheduled air service between Westray and Papa Westray is reputedly the shortest in the world at two minutes ' duration . 
