In a statement, APX said it started to fly the Manila-Singapore route on Tuesday, October 27.
APX operates at the Terminal 2 at the Changi airport in Singapore to give its passengers a better shopping experience.
Other budget airlines, including local carrier Cebu Pacific, operate at Changi's Terminal 3, which was designed for the fast turnovers and other operational needs of a typhical no-frills flights.
"Duty free shopping is expansive at Terminal 2 and it is ingrained in Filipino culture to bring home gifts from travels abroad," said Maria Java, APX vice president for marketing and media.
She continued, "Travelers out of Singapore to the Philippines have been very receptive of our start of operations. Even before our maiden flight on October 27, our forward sales for December are now close to full for both Singapore-Cebu and Singapore-Manila."
APX's Manila-Singapore flights leave at 4 p.m. from Monday to Sunday. The airline said it will promptly add daily Cebu-Singapore flights on December 1.
Flag carrier Philippine Airlines, led by Tan, is the sister company of APX.