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A check-in system malfunction at Incheon International Airport on Friday (Oct. 30) caused major delays in passenger processing, starting around 4:30 a.m. and lasting over 12 hours, according to Yonhap and other outlets. The disruption, linked to intermittent communication failures in the U.S. airline network ARINC, halted ticketing for some airlines and delayed flights, affecting about 1,200 passengers at one point, Dong-a Ilbo reports. Systems were restored after roughly 11-13 hours, with Yonhap noting that Korean national carriers saw no delayed departures, but Chinese airlines' travel products were delayed. Korean media coverage focuses on the operational chaos and passenger inconvenience, with reports emphasizing the prolonged nature of the disruption and the eventual recovery.