Hello there! I was quite satisfied with Delta Airlines STL Terminal on my most recent trip. The check-in kiosks were simple to operate, and staff members were on hand to help if necessary. Security was quick, and I really liked the terminal's serene atmosphere. nor overly packed, nor too noisy. There was comfy seating with good Wi-Fi close to the gate. The personnel was kind from gate to plane, and everything went according to plan. This is just the kind of peaceful, convenient vacation experience I'm hoping for.