for ALL of the islands
Not sure a seaplane would fit the requirements, Coll Colonsay, Tiree obviously have nice strips, Jura is for the most part is owned by a gazzilionair and he is putting his own version of Heathrow in, Islay has its own field, as do the Hebridies, Skye has the bridge to the mainland, which pretty much leaves Rum Egg and muck and how many people,if any, live on them.