Have you noticed that a lot of watercolor artists paint airport landscapes?
The aerodynamic shape of an aircraft is very attractive and that is why they sketch or paint the scenes from the airport. I too had planned to paint such a scene sometime. The SeaTac is uniquely positioned because of the Mount Rainier being so clearly visible from there. I was at SeaTac recently and I quickly painted this scene in my small sketchbook.
Smitten By Watercolors 