The plane, carrying 284 passengers and crew, was travelling from Vancouver to Sydney but was diverted to Hawaii.
VIRAL ΕΙΔΗΣΗ: Σεισμός Αθήνα: Τι τρομάζει τους σεισμολόγους – Κίνδυνος ισχυρού μετασεισμού ακόμα και 5 Ρίχτερ
Thirty people were taken to hospital in Honolulu on Thursday. Nine had severe injuries, officials said.
Air Canada said the Boeing 777-200 jet "encountered sudden clear air turbulence... two hours past Hawaii".