Jetstar Japan will begin flights between Osaka and Singapore via Manila in the Philippines from 25 March.
The airline will operate four times weekly flights on the route using Airbus A320 aircraft.
According to the Innovata schedules, Singapore Airlines operates nonstop flights between Osaka Kansai International and Singapore Changi International airports.
Cebu Pacific Air and Philippine Airlines operate Osaka Kansai-Manila Ninoy Aquino flights. Jetstar Asia, Philippine Airlines, Airphil Express, Cebu Pacific Air and Singapore Airlines operate Singapore-Manila flights, data in the Innovata schedules shows.