Vietnam Airlines from Siem Reap to Singapore has 6 flights every day. And there are 42 flights per week flying out of Siem Reap which connect to Singapore.
The price for economy class – one way ticket of Vietnam Airlines from Siem Reap to Singapore is 11.137.000 VND (or ~$555 USD) and the price for bussiness class – one way ticket of Vietnam Airline is 17.553.000 VND (or ~$876 USD).