SilkAir, a wholly owned subsidiary of Singapore Airlines, will make capacity adjustments to its network from 28 October.
The airline will launch an additional service to Wuhan, China and Chiang Mai, Thailand, with frequency of flights to each destination increasing from three to four flights per week.
An additional weekly Singapore-Danang-Siem Reap circular flight will be introduced.
SilkAir will also add an additional frequency to Hyderabad, India, increasing the number of weekly flights to nine.
It will reduce services between Singapore and Changsha from four times to three times weekly. Flights between Singapore and Pekanbaru will also be reduced from five to four times weekly, the airline says.
The carrier will delink its weekly Singapore-Cebu-Davao circular flight and will launch two new direct flights from Singapore to Cebu and Davao.