Have child, just got Pre Check. Kids under 12 don't need their own known traveler number. Pack light, gate check the car seat, and you're pretty close to the pa

Have child, just got Pre Check. Kids under 12 don't need their own known traveler number. Pack light, gate check the car seat, and you're pretty close to the parent post's timing. Even if you have to check luggage, Southwest's check-in lines are short more often than not.