* Some airlines open their ticket counters as early as 4:30 a.m. Please verify with your airline or call (949) 252-5200. ** All parking lots remain open after hours to serve arriving passengers. Hours of Operation. Open at: Airline ticket counters* 5:00 a.m. Parking lots** 4:30 a.m. Valet Parking Service 5:00 a.m.