Malindo Air plans to launch three new domestic services from Kuala Lumpur in June.
It will begin services to Sibu, Miri and Tawau starting 11, 14, and 26 June respectively, says the airline.
Its spokesman adds that it will also be taking delivery of two more Boeing 737-900ERs, although it did not provide a timeline.
Malindo, a joint venture between Indonesia's Lion Air and Malaysia's National Aerospace and Defence Industries, started operations on 22 March with services from Kuala Lumpur to Kuching and Kota Kinabalu.
It operates two 737-900ERs, has orders for five Boeing 787-8s and plans to grow its fleet to 100 aircraft within 10 years.