Southwest EarlyBird Check-In is a convenient service offered by Southwest Airlines that allows passengers to secure a better boarding position without having to manually check in exactly 24 hours before their flight. With Southwest EarlyBird Check-In, travelers can enjoy automatic check-in, which means the airline assigns their boarding position before general check-in opens. This feature is particularly beneficial for those who want to improve their chances of getting a preferred seat, as Southwest Airlines operates an open seating policy, meaning there are no assigned seats, and passengers board in the order of their assigned boarding positions.