What feature does Southwest Airlines offer as part of their check-in process?

Southwest Airlines offers online check-in 24 hours prior to the flight, which is a convenient feature that allows passengers to check in from the comfort of their own home or anywhere they have internet access. This feature not only saves time but also provides passengers with the ability to select their seats and receive their boarding passes in advance. The emphasis on online check-in aligns with modern travel preferences, making the check-in process smoother and more efficient for travelers.

Having this option available as early as 24 hours before departure enhances the overall travel experience by reducing wait times and streamlining airport procedures. This is particularly important for Southwest Airlines, known for its rapid turnaround times and customer-friendly policies.

The other choices present different check-in methods, but they do not capture the full scope of Southwest's emphasis on online convenience, which is the hallmark of their check-in process.