Patee Sarasin, chief executive of Nok Air, told reporters in the morning that he had a photo-shoot session to attend. He also said the airline would punish the pilots.
Later in the day, Mr Patee, communicating in a text message, said he would not talk to the media until the carrier comes up with a plan to resolve its internal problems.
Shortly after his text message, Nok Air released a statement saying it is taking action against 10 people believed to be responsible for Sunday's strike.
Of them, one has been dismissed, two were suspended for seven days from Monday until next Tuesday, and the seven others face an inquiry, including a deputy vice president overseeing flight operations.