According to Nok Air's statement, the incident involved some disgruntled pilots who did not meet the audit requirements of the airline which is in the process of upgrading its standards to pass the International Air Transport Association's Operation Safety Audit.
Speaking after the meeting with the airline representatives, Mr Omsin said all carriers are required to draw up contingency plans and appoint a "manager on duty" to make decisions in case of emergencies, including abrupt flight cancellations.
He said the airlines are also required to submit a risk management plan to the Transport Ministry within 30 days.
As for passengers, airlines are required to provide food and drink, communication devices and accommodation as deemed appropriate and compensation of 1,200 baht.
"A first violation will result in a warning. The second is punished by suspension of the Air Operator Licence. The third results in revocation of the AOL, and that is up to the transport minister," he said.
Discussing the Nok Air incident, Mr Omsin said the airline was required by law to compensate passengers affected by flight cancellations.
However, he pointed out that no staff with decision-making power were sent to explain the situation to the passengers on Sunday, and this must not happen again as it could cause tensions.
He said the cabinet will be informed Tuesday of the Nok Air incident and steps the aviation authorities have taken to resolve the matter.
Amphawan Wannako, deputy director-general of the Department of Airports, said an investigation would be launched into the incident and penalties would be meted out against Nok Air.
Transport permanent secretary Chartchai Thipsunawee said Nok Air management is expected to submit its explanation to the authorities in three days as to why the flights were cancelled.
Two Nok Air flights, DD8722 Bangkok-Chiang Rai and DD7318 Bangkok-Ranong, were rescheduled Monday due to "insufficient staff and an out-of-order conveyor belt".
DD8722 was rescheduled from 4.40pm to 7pm while DD7318 was delayed from 5.05pm to 5.50pm.