Within Vietnam and to other countries:
National Vietnam Airlines http://www.vietnamairlines.com.vn
VietJet Air: https://www.vietjetair.com/Sites/Web/en-US/Home
Air Asia: https://www.airasia.com/en/gb
Jetstar Pacific Airlines: domestic flights and flights to Bangkok http://www.jetstar.com
Cambodia:
Laos: http://www.laoairlines.com/
Thailand: http://www.thaiairways.com
Indonesia : http://www.garuda-indonesia.com
Maylaysia: http://www.malaysiaairlines.com
Singapore: http://www.singaporeair.com
Myanmar:
China: http://www.china-airlines.com
And budget flights around Asia:
