The plane from Copenhagen to Kangerlussuaq was very big and comfortable - one of the most comfortable flights I have ever experienced. The staff was very helpful and assisted with anything you might need. The catering was great. The crew served drinks several times. The only surprising thing was they didn't inform about the reason of the delay (1 hr), probably took it for normal bearing in mind Greenland's severe conditions. From Kangerlussuaq to Ilulissat however the plane was very small - for about 30 people, you couldn't talk about any particular comfort there, however given the fact how unique Greenland is and how remote the place is, it's fully understandable. Although the flight was very short, there was tea & coffee + a small cookie served.