The Boeing 787 aircraft was flying 12,300 m in the air at noon when the glass of its left-front cockpit window cracked, the Mainichi reported.
The aircraft continued its journey before safely landing at the Narita Airport in the afternoon, according to the Narita Airport Office under the Japanese Ministry of Transport. No one was injured.
The return flight of the aircraft, from Narita to HCMC, was canceled afterwards.