In 2026, the secret to "fast" check-ins on Southwest has shifted due to their historic transition to assigned seating. While the old "24-hour dash" for a boarding position is gone, frequent flyers maintain speed by utilizing the Southwest Mobile App with biometric login (FaceID/TouchID), allowing them to check in and receive a digital boarding pass in under five seconds. For those with A-List or A-List Preferred status, the process is even faster as they are often "auto-checked in" and given priority boarding groups (typically Group 5 or higher). Additionally, travelers who use Apple Wallet or Google Wallet integration can bypass the app entirely after the initial check-in. At the airport, "Express Lanes" for A-List members and the widespread use of self-service biometric bag drops further expedite the physical process. For the average traveler, the key is having all travel documents pre-verified in the app's "Traveler Profile" so that the "Check-In" button only requires a single tap.