WF has a direct flight LHR-BGO, but they are not too reliable (but good at handling iregularities). KLM is a mess at Schiphol this year. SAS will probably run as normal again in September. I'd still go for the direct DY if the timing suits. The current DY (i.e. without intercontinental routes) is reasonably well run, and that on some very demanding routes operationally (as SK and WF): all-year domestic routes in Norway.
I booked WF. Good timing and same price as DY (google flights doesn't show same price as WF website). Let's see what happens.