TRANSIT VISA
https://www.ica.gov.sg/enter-transit-depart/entering-singapore/visa-free-transit-facility
Nationals of the Commonwealth of Independent States (CIS), Georgia, Turkmenistan and Ukraine passports may qualify for the 96-hour free transit facility if they hold air tickets to a 3rd onward country. Please also check with your airline at each point of embarkation if they allow guests to board flights based on the above rule. Assessment for entry is determined by the Immigration & Checkpoints Authority (ICA) officers at the point of entry. Otherwise, a visa will be required.
VISA Application
https://www.ica.gov.sg/enter-transit-depart/entering-singapore/visa_requirements
