According to AstroSwami the meaning of your Dream is:
Dreaming of an airport may indicate you are at a turning point in your life and are soon to "take off." Airports have different terminals and connections. If you are hunting for your departing terminal and cannot find it, you are struggling to get away from something in your life. If you are excited to be in the airport and are able to take off, you are off to bigger and better things.