What is EarlyBird Check-In at Southwest, it’s an optional service offered by Southwest Airlines designed to enhance your travel experience by securing an earlier boarding position. When you purchase EarlyBird Check-In, the system automatically checks you in 36 hours before your scheduled departure time, ensuring that you receive a better spot in line compared to those who check in manually during the standard 24-hour window. This service is particularly beneficial for passengers looking to secure overhead bin space or prefer the convenience of boarding earlier without needing to remember to check in exactly at the 24-hour mark.