"airports and airlines have already received a notice that in order to guarantee the security of the olympics, they have to ban flights according to the demands of the civil aviation authority," the beijing news said QANTAS has the worst record of all domestic airlines for delayed flights, according to a new report.A federal government report showed more than one in three Qantas flights were affected by delays, compared to just over one in 10 at Flights newair.com beijing to graung flights. Home