There is a press release on the Norwegian version of Widerøe's website.
Something along the lines of:
Widerøe will boost their routes to Great Britain, and begin direct flights between Bergen and Edinburgh and Newcastle on 26th March. Flights will be three times weekly using 50-seat Dash 8-300. Fares will be as low as 994 NOK. .... Newcastle is a good alternative to London as a short break destination. The city is friendly, cheap and stress-free. Newcastle has history, parties, football and culture. Direct from Bergen.
994 NOK is about £80, so quite a bit more than Jet2.