For flights between Singapore and Hanoi, Singapore Airlines operates the following airport routes:
For flights between Singapore and Hanoi, Singapore Airlines operates from the following airport routes: Singapore Changi Airport (SIN) to Noibai Airport (HAN)
One of Singapore Airlines cheapest prices for a Singapore to Hanoi flight we have right now is 279$.
The price for a Singapore Airlines flight between Singapore to Hanoi will vary according to some factors, like seasonality and anticipation.