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.
To unfasten the tongues Mercury must be in its house and it is efficient with those who Mercury rules. - Picatrix (Andalusia, ~1000.AD)