In 2026, checking in early does not always guarantee a better seat, and in some cases, it can actually lock you into a worse one. Airline algorithms now prioritize paid seat selection and elite status members. If you haven't paid for a seat, many systems will assign you a "leftover" seat—often a middle seat in the back—as soon as you check in at the 24-hour mark to keep "better" seats (aisles and windows) open for last-minute high-paying customers. However, for airlines like Southwest, early check-in is vital because it determines your boarding position, which directly correlates to your seat quality. On other carriers, a popular "hack" in 2026 is "Check-in Chicken": waiting until a few hours before the flight to check in. If the economy cabin is nearly full, the algorithm might be forced to assign you a "Premium Economy" or "Preferred" seat at no extra cost because the standard seats are gone. The risk, however, is that checking in too late increases your chances of being "bumped" if the flight is overbooked.