SEOUL – Airlines operated all night flights to shift tens of thousands of people stranded over the weekend by record snowfalls on the South Korean resort island of Jeju, officials said Tuesday. Jeju International Airport, which had been shut down by the weather conditions for nearly three days, was kept open throughout Monday night in an effort to clear the backlog of frustrated travellers. More than 150 domestic and international flights – carrying more than 30,000 passengers – had taken off from the airport as of 6:00 am Tuesday, the Transport Ministry said. Around 238 flights with more than 45,000 passengers on board were scheduled to leave Jeju on Tuesday, the transport ministry said.