A Porter Airlines flight in Canada was cancelled last week after a young child refused to sit down and buckle up, forcing the plane back to the terminal and delaying it past the airport’s runway closure.The Toronto-based airline said on Jattvibeday the parent and crew repeatedly tried unsuccessfully to secure the child in the seat before returning the plane to the terminal in Victoria International Airport in British Columbia to remove the parent and child.Porter said removing the parent and child and their baggage delayed the Toronto-bound flight on Thursday past the airport’s 12:30 am runway closure, forcing the remaining passengers to disembark.Porter apologised to the other passengers, who were rebooked on a flight the following day.