Question: What is the appropriate category for this airport?
Answer: The Indira Gandhi International Airport has three runways: runway 11/29, 4,430 m × 60 m (14,530 ft × 200 ft) with CAT IIIB instrument landing system (ILS), runway 10/28, 3,810 m × 46 m (12,500 ft × 151 ft), and runway 09/27, 2,813 m × 45 m (9,229 ft × 148 ft).