The time restriction for online check-in processes varies depending on the airline. Generally, these procedures conclude 120-180 minutes before your flight, coinciding with the start of airport check-in. If you are doing counter check-in, i.e., checking in at the airport,  be aware that the deadline is 60 minutes before domestic flights and 75 minutes before international flights. To avoid delays, especially due to potential long queues, we recommend arriving at the airport earlier than these deadlines. Should you find yourself in a check-in line as these deadlines approach, please notify the airport staff. They are there to assist passengers who are close to their flight's departure time.