United Airlines will add once-daily nonstop service to San Francisco and Los Angeles From Pittsburgh International Airport in September.

The flights will start Sept. 2. The San Francisco flight will leave Pittsburgh at 8:30 a.m. and arrive at San Francisco International Airport at 10:58 a.m. Pacific Time. The return flight will leave San Francisco at 1 p.m. and arrive in Pittsburgh at 8:49 p.m. The Los Angeles flight will leave Pittsburgh at 6 p.m. and arrive at Los Angeles International Airport at 8:16 p.m. The return flight will leave Los Angeles at 9:40 a.m. and arrive in Pittsburgh at 5:17 p.m.

United will use A319 jets with 120 seats for service.

US Airways currently offers one nonstop flight a day from both cities, but will discontinue them on Aug. 18.