The sounds of sobbing, prayers and anguish echoed through the departures hall of an airport in southwestern South Korea on Monday as families of the victims killed when a passenger jet crash-landed over the weekend waited for their loved ones to be identified.

A Jeju Air flight drove off the runway in South Korea and collided with a fence, leaving dozens of passengers dead, the Yonhap News Agency reported.

The Transportation Safety Board of Canada says it is investigating whether debris found on the runway of an airport in St. John's is connected to the plane that caught fire over the weekend after it landed on a Halifax runway.

Thick fog is expected to disrupt hundreds of flights home on the busiest travelling day of the Christmas holidays. Flights at Stansted Airport were affected by the weather conditions on Saturday, while live departure boards showed delays at Heathrow,

Fog is continuing to disrupt flights at Gatwick Airport with restrictions imposed to maintain safety. On what is expected to be the airport's busiest day of the Christmas period, it said some flights "may be delayed throughout the day" due to "poor visibility" and apologised to customers.

Disruption continues at Gatwick Airport for a fourth day as thick fog causes flight cancellations and delays during the airport’s busy holiday period. A spokesperson for the airport has confirmed that air restrictions will be kept in place because of low visibility in airfields affected by fog.