What terminal se delta at SFO Delta Air Lines operates out of Terminal 2 at San Francisco International Airport (SFO). Known for its modern and passenger-friendly facilities, Terminal 2 provides a streamlined and efficient experience for Delta travelers. The terminal is equipped with multiple check-in counters and self-service kiosks, allowing passengers to check in quickly and easily. Security checkpoints are designed to handle a high volume of travelers efficiently, reducing wait times and ensuring a smooth transition from check-in to the departure gates.