When you go to the airport you will see a "terminal building", which is usually separated into "Departures" or "Arrivals", "Domestic" or "International". When you have to travel abroad by plane, you must have a "Ticket" and a "Passport When you arrive at the airport, you have to go to "Check-in" at the check-in counter according to the information stated on the boarding pass
The information should include "Flight Number", "Destination", and "Boarding Time".