Istanbul Airport (IST)

Istanbul Airport operates from one massive terminal building with 1,440,000 m² floor space, making it the world's third-largest airport terminal. The terminal is divided into five concourses: A, B, D, and F handle international flights, while pier G and three areas of pier F serve domestic flights. Each concourse has 8-17 gates, with walking times from central terminal to the furthest gates (A11, B15, D17, F16, G11) requiring 15-20 minutes due to the terminal's enormous scale. Moving walkways are available but insufficient for the distances involved, requiring passengers to arrive 2.5-3 hours before flights.

Security processing features separate checkpoints for domestic and international flights, staffed by 3,500 security personnel and 750 immigration officers providing comprehensive processing capabilities. Immigration and passport controls are located in both arrivals and departures areas with clear directional signage. Turkish Airlines operates this as their primary hub with over 50 airlines serving 122 countries, making it a major transcontinental connection point between Europe, Asia, and beyond.

The terminal houses five 24-hour lounges including three Turkish Airlines lounges (Domestic, International, and Business), plus IGA Lounge and SkyTeam Lounge. Dining and shopping options include over 100 establishments ranging from local Turkish cuisine at Simit Sarayi to international brands like Burger King and Starbucks, plus extensive duty-free shopping featuring clothing, electronics, and Turkish specialties. Family facilities include dedicated check-in areas in aisle K, children's play areas in the CIP Lounge, nursing rooms, and complimentary buggy services for families with children 0-2, expectant mothers, and passengers over 65. The airport opened in 2019 as Turkey's new aviation flagship, replacing the older Atatürk Airport as Istanbul's primary international gateway.