Tiger Airways plans to raise frequencies of nine services.
On 1 May, Tiger will raise the Singapore-Ho Chi Minh City frequency from 20 to 21 times weekly, while the Singapore-Bangkok frequency will increase from 42 to 45 times weekly.
Two weekly frequencies will be added to flights from Singapore to Bengaluru and Macau, raising them to daily and twice daily respectively, says a spokeswoman.
Starting 1 June, the Singapore-Taipei Taoyuan service will be operated 11 times weekly, up from nine times weekly.
Three weekly flights will be also added to services from Singapore to Phnom Penh and Penang, raising them to 10 and 14 times weekly respectively.
Services from Singapore to Kochi and Perth, meanwhile, will increase from four to five times weekly, and from nine to 11 times weekly respectively.
Changes on routes to Kochi and Perth will take effect on 1 July, adds the spokeswoman.