Vietnam Airlines from Phnom Penh to Ho Chi Minh City has 3 flights every day. And there are 21 flights per week flying out of Phnom Penh which connect to Ho Chi Minh City.
The price for economy class – one way ticket of Vietnam Airlines from Phnom Penh to Ho Chi Minh City is 4.997.000 VND (or ~$248 USD) and the price for bussiness class – one way ticket of Vietnam Airline is 7.610.000 VND (or ~$378 USD).