Mindful Doodles #378 – Meaning of dreaming of aircraft:
Why do you dream of unexpected imagery? Your brain is especially impressionable, when you see or do an activity just before bedtime. The memory is fresh and retained. During sleep, the memory cells may be activated and these play out in a dream.
At other times, when you have thought about planes and air travel during the day, then this theme resurfaces in a dream.