Early Bird Check-In is an optional service offered by Southwest Airlines that allows passengers to automatically check in for their flight and receive a better boarding position. This service can be purchased on Southwest.com, over the phone, or on the app up to 36 hours prior to a flights scheduled local departure time. The cost of Early Bird Check-In starts at $15 one-way and is subject to availability. By purchasing Early Bird Check-In, passengers can improve their chances of getting an A boarding position, which means they can board the plane earlier and have a better chance of selecting their preferred seat. However, whether or not Early Bird Check-In is worth it depends on individual preferences and priorities. Some passengers may prefer to save money and check in manually at the 24-hour mark, while others may value the convenience and peace of mind that comes with automatic check-in.