An airport in a dream commonly marks a threshold moment -- a transition you can see coming, along with the nerves that come with it. Missing a connection or rushing through terminals often mirrors anxiety about a change you haven't fully prepared for, while a calm departure can reflect readiness to move toward whatever's next.
It is much worse for an Artist to conceive he knows those things which he is ignorant of, than to be ignorant of those thing which he ought to know. - Cardan Girolamo (1501-1576)