There are currently 11 questions tagged airplane.
Tag wiki excerpt:
A vehicle used for travelling long distances through the sky.
Furthermore, flying is a synonym of airplane. This happened in April 2012, but I didn't find a meta post about it. So, now we can discuss it.
There are three possible candidates, as far as I can see:
1) airplane
The longest and also the least inclusive, focusing on the vehicle itself. This even shows in the tag wiki excerpt, that doesn't guide the user on when to use that tag. On the plus side, it is already the master, so no change needed (except for a new tag wiki excerpt).
The other two options are shorter and seem to be a bit broader, so maybe more suitable for questions also about preparations for a flight or its aftermath. On the other hand, they would need some work (but then again, it's only 11 questions).
2) flying
Currently the tag synonym.
3) flight
A small drawback might be to confuse it with the noun meaning to run away, but it seems unlikely.
Keep it the way it is or do we need a change?