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.
When a Planet is within five degrees of the cusp of any house, it shall be accounted to have virtue in that house though actually posited behind the cusp in another house. - Cardan Girolamo (1501-1576)