The General Guideline for How Early You Should Get to the Airport. Generally speaking, most airlines advise that you arrive at the airport at least 2 hours prior to a domestic flight, and at least 3 hours prior to an international flight.
How long should you be at the airport before a domestic flight?
Whether your journey is domestic or international greatly alters the timings of your airport arrival. A good rule is that an optimal arrival time at the airport is at least one hour in advance of domestic flights and at least two hours in advance of international ones.
Should I be at the airport 2 hours before flight?
Always follow your airline's guidance on how early you need to be at the airport before your flight. As a general guide, you will need to have checked in and be ready to go through security at least 2 hours before your flight departure time.