Norwegian and SAS fly to Longyearbyen from the UK via mainland Norway (from £260; norwegian.com). Flight times mean a transfer night in Oslo is often necessary. If so, check in to the Radisson Blu Hotel, moments’ walk from the main airport terminal. Rooms are quiet, comfy and dark, and a good breakfast is included (from £160; radissonblu.com). From Oslo, it’s a three-hour flight to Longyearbyen.