Holidays in Thailand

What is the best way flights from Brisbane (Australia) in Ho Chi Minh City?

My mother wants to travel to Vietnam later this year and she asked me to do this. I have said here that their best options were to Singapore or Bangkok and also look through Hong Kong or Manila. She does not want to fly through Sydney or Melbourne, and was going to Thailand (return), and hated Sydney airport lol. So what is the best, but the least costly to Vietnam to Brisbane with an airline? And she is also returning to Hanoi in Brisbane, the best way for this?

Better than the probably cheaper Jetstar Asia, but you have to go to Paris for this one: 08:25 Brisbane – Sydney Sydney 11:00 JQ18 14:30 – 19:15 in Ho Chi Minh JQ7 alternative, more costly, is through Malaysia Airlines Kuala Lumpur. Or Singapore Airlines via Singapore. Back in Hanoi is not a new problem, Singapore and Malaysia to fly there (called open-jaw). All options Prior positions include a change of aircraft in each direction.

Amazing Thailand @ 1 Price 5 Routes press conference