Bereaved families are calling for more support from the government after 179 people were killed in a Jeju Air plane crash at South Korea's Muan International Airport on Sunday
- Jeju Air passengers have been cancelling tickets for future flights, according to Yonhap news agency.
It reports that some 68,000 flight reservations had been cancelled as of 13:00 local time (04:00 GMT), including 33,000 domestic flights and 34,000 international journeys.
The news agency adds that travel agencies across South Korea are reporting a high number of cancellations from passengers, as well as a drop in the number of bookings.
Since yesterday's fatal incident, Jeju Air's website has remained blank, with a black banner tribute at the top of the site.
The banner reads: "We deeply apologise to those affected by the incident. We will make every effort to resolve the situation. We sincerely regret the distress caused."
Many questions remain over exactly what happened in the minutes before the deadly Jeju Air plane crash at South Korea's Muan International Airport on Sunday.
A bird strike has been given as a possible contributing factor, but it's unclear how this might have caused the aircraft's landing gear to remain closed, leaving the jet to career down runway before colliding with a concrete structure.
"This is one of the most perplexing crashes I have ever seen. Nothing about it makes any sense," aviation expert Geoffrey Thomas tells the BBC.
Speaking from Perth, he notes that while a bird strike may have played a role, once the pilot issued a mayday call the air traffic control data cut out.
The sudden loss of data - which allows the flights to be tracked - "indicates an electrical fault of some kind", Thomas suggests.
Following the call, the plane was also allowed to land in the opposite direction to usual.
But the wheels were up, the flaps not set correctly and it landed halfway down the runway before careering into the localiser and exploding, he says.
Thomas says there are workarounds if an electrical or hydraulic problem arises, but these were not used.
"It just doesn't make any sense. We're going to have to wait for voice recorder details before we can get a handle on what on earth went on."
Acting President Choi Sang-mok has ordered an emergency safety inspection of the country's entire airline operations.
Muan has also been declared a special disaster zone, which makes central government funding available to the local government and victims.
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All flights to and from Muan International Airport have been cancelled.
A national seven-day period of mourning has been declared, and New Year's Day celebrations in the country are likely to be cancelled or scaled down.
Aircraft maker Boeing has said it is in touch with Jeju Air and stands "ready to support them".
Jeju Air has apologised to families, with its chief executive saying in a news conference that the airline had no history of accidents. It is believed that Sunday's crash has been the airline's only fatal accident since it was launched in 2005.
