Metrojet Flight 9268 was an international chartered passenger flight operated by Russian airline Kogalymavia. On 31 October 2015, at 06:13 local time EST, the Airbus A321-231 operating the flight exploded above the northern Sinai Peninsula following its departure from Sharm El Sheikh International Airport, Egypt, en route to Pulkovo Airport, Saint Petersburg, Russia. All 224 passengers and crew on board were killed, making it the deadliest plane crash to involve an Airbus A320 and the deadliest to occur in Egypt. Russian investigators concluded that the cause of the crash was most likely an onboard explosive device.