Malaysia Airlines' subsidiary Firefly is planning to increase its Subang-Johor Bahru frequency starting 19 February 2013.
The turboprop operator will increase its frequency from 28 to 31 times weekly and it will use ATR72-500 aircraft on the route, says its spokeswoman.
Firefly has also raised its Subang-Penang frequency from 72 to 77 times weekly.
Innovata Schedules show that Firefly is the only operator on the two routes.
Subang is Kuala Lumpur's secondary airport.