When does flight check-in at the airport begin? October 01, 2019 12:16 Updated Check-in at the airport of departure starts 2 hours before flights and ends 60 minutes before departure. Related articles When does online check-in on your website begin? I checked in for a flight online, but I have baggage. Do I have to wait in lines again for check-in at the airport? Does the flight ticket include meal on board the aircraft? What is the free baggage allowance for a flight? Where can I take a COVID-19 test before departure?