Checking in with Southwest Airlines is a simple and efficient process that can be completed online, through the mobile app, or at the airport. The airline opens its check-in window exactly 24 hours before the scheduled departure time of your flight. To ensure you get the best possible boarding position—which is important since Southwest does not assign seats—you should check in as soon as the 24-hour window opens. To check in online, visit the official Southwest Airlines website at southwest.com and click on the “Check In” tab at the top of the page. You will be asked to enter your confirmation number, first name, and last name. Once your reservation is found, follow the prompts to complete the check-in process. You will then receive a boarding position (like A23, B15, etc.), which determines when you can board and select your seat. The earlier you check in, the better your position. After check-in, you can choose to print your boarding pass, email it to yourself, or send it to your mobile device. If you’re using the Southwest mobile app, the process is even more convenient. Simply tap the “Check In” button, enter your confirmation details, and your boarding pass will be available in the app or can be saved to your digital wallet. Mobile check-in is a great option for travelers on the go, and it also provides real-time updates about your flight status, gate changes, and boarding times. If you don’t have access to a computer or smartphone, you can check in at a self-service kiosk or with a Southwest agent at the airport. These options are typically available starting three hours before departure. However, keep in mind that late check-in often results in a lower boarding position, which means fewer seat options. For those who want to guarantee an early boarding position without checking in exactly at the 24-hour mark, Southwest offers a paid EarlyBird Check-In service. This optional add-on automatically checks you in before the general 24-hour window opens, improving your chances of securing a better boarding spot, although it doesn’t guarantee Group A placement. Passengers with Business Select fares are automatically assigned positions in the A1–A15 range, while A-List and A-List Preferred members also receive priority boarding benefits. In summary, checking in with Southwest Airlines is best done online or via the mobile app starting 24 hours before your flight. Early check-in ensures a better boarding group, which is key to getting a desirable seat since Southwest operates on an open-seating policy. Whether you choose to check in online, through the app, or at the airport, the process is straightforward and designed to give passengers flexibility and control. For the smoothest experience, set a reminder to check in as soon as your flight reaches the 24-hour mark and take advantage of mobile tools to stay updated on your travel details.