C919 will fly international commercial routes for the first time.

According to Air China, starting from August 12th, the Beijing Capital - Ulaanbaatar route will start using C919 domestically-produced aircraft to operate one flight daily. This is the first regular international passenger flight route where the C919 aircraft has been put into operation. Outbound flight: CA723 Beijing Capital 15:00 - Ulaanbaatar 17:15; Return flight: CA724 Ulaanbaatar 18:30 - Beijing Capital 20:35.