Delays in Norway are not a personality flaw of the country. They are physics wearing a high-vis vest.
Common causes
Weather at origin, weather at destination, weather at the airport you are diverting around, crew duty limits after earlier messes, and winter de-icing queues that look peaceful until you notice the clock.
How boards talk about it
Avinor status codes tell you the story in shorthand. “New time” is a revised plan. “Departed” is confirmation. Learn the difference in this guide, then keep the board open.
Traveller move
Build buffers. Tell the person picking you up the truth: “I land at X unless Norway decides otherwise.”