The relatives of an Australian and a New Zealander onboard the missing Malaysia Airlines flight are struggling to deal with the tragedy.

The wife of one of the passengers aboard the missing Malaysia Airlines plane has broken news to their young sons that their dad is missing.

Paul Weeks, a 39-year-old mechanical engineer based in Perth’s northern suburbs, was onboard the ill-fated flight, on his way to Mongolia for his first shift in a fly-in-fly-out job.

His distraught wife Danica is awaiting any information and says explaining her husband’s absence to son Lincoln, 3, and Jack, 10 months, was the hardest thing to cope with.

“I had to bring it up with Lincoln because he had not asked anything. I said to him ‘You know Daddy has gone away … and on the way Daddy got lost’,” Ms Weeks said.

“And then I broke down. He is young and resilient – he said “That is okay mummy, I will find Daddy”.

Six Australians and two New Zealanders were onboard the flight from Kuala Lumpur to Beijing when it disappeared from radar screens over the South China Sea on Saturday.

The elderly mother of Brisbane man Rod Burrows, who was travelling with his wife mary, is struggling to comprehend her loss.

Irene Burrows and her husband George flew into Brisbane on Wednesday from Biloela to be with their three grandchildren.

She says the family is praying for a miracle.

“Nobody can believe that this has happened. This happens to other people, not to the likes of us who have a son and a daughter on a plane that wouldn’t hurt or harm anybody and were just a loving couple,” she said.

“Why was it that plane? There’s thousands up there a day.

“If we could just find the plane … we would have some satisfaction. There is always hope – but it is fading very fast.”