SEOUL, Aug. 14 -- Passengers on an AirAsia flight from Kuala Lumpur to Seoul's Incheon International Airport reportedly faced a delay of more than two hours after the aircraft unexpectedly landed at Gimpo International Airport nearby without prior notice.

Korea JoongAng Daily reported that Flight D7 506 circled in Korean airspace before landing at Gimpo - around 40 km away - at 8.08pm on Wednesday, instead of its scheduled 7.50pm arrival at Incheon.

"A passenger mentioned we were at Gimpo, not Incheon, and even the crew looked surprised and asked us to confirm," a 38-year-old passenger surnamed Kim was quoted saying.

"Once the crew realised it really was Gimpo, they became visibly flustered. Many passengers had already begun taking out...