Chicago Midway International Airport covers just over one square mile (650 acres or 260 hectares) and has four active runways: 13C/31C: 6,522 ft × 150 ft (1,988 m × 46 m), air carrier runway, ILS-equipped. 4R/22L: 6,445 ft × 150 ft (1,964 m × 46 m), air carrier runway, ILS-equipped.