Philippines Airlines was forced to cancel at least five flights on Saturday after some of their pilots decided to quit on the spot, according to the Associated Press.
The pilots moved abroad, a common occurrence in the Philippines. Roughly 10% of the 94 million people work abroad.
The company's spokesman, Jonathan Gesmundo, went on TV and radio stations to apologize for the cancellations.
"In the past few days, pilots had not been reporting for duty. This has caused problems for us," Gesmundo said.
Meanwhile, there are stranded passengers in the Philippines. The airline, he said, will bring in other planes which other pilots can fly.