Security screening is an important part of every journey, and wait times can change throughout the day depending on passenger traffic, flight schedules, and the travel season. BKK Security Wait Times Arriving at the airport at least three hours before an international flight gives you enough time for check-in, security, and boarding. Completing online check-in, keeping your travel documents ready, and packing your carry-on according to airport regulations can help you move through the checkpoint more quickly. Staying updated on your flight status before leaving for the airport is also a simple way to avoid unnecessary stress and enjoy a smoother travel experience.