An Indonesia AirAsia flight travelling from Perth to Denpasar with 151 passengers on board was turned back on Sunday morning after a mid-air emergency.

Flight QZ 535 was 25 minutes out of Perth when an indicator alerted the pilot to a loss of cabin pressure.

The pilot made the decision to turn back and emergency services were placed on standby at Perth Airport.

Video from passengers on board showed oxygen masks drop from the ceiling and passengers being told to brace.

The aircraft landed safely at 12:40pm and there were no injuries to passengers.

The flight was cancelled and passengers were re-booked on later flights to Denpasar.

Passengers told Channel Nine they had sent text messages to loved ones fearing they were going to die.

Engineers are tonight examining the aircraft.

The Perth woman said cabin crew were panicking, but left passengers in the dark.

“One of the stewardesses started running down the aisle and we thought, ‘why is she running?’ And then the masks fell down and everybody started panicking. Nobody told us what was going on,” she said.

Tracy, who was travelling with son Jayden, said: “My son said he didn’t want to get on another flight but I’ve assured him it can’t happen twice in a row. It’s really put me off flying. I fly every year on AirAsia.”

The plane landed safely in Perth, with passengers rescheduled for later journeys.

AirAsia said its engineers at Perth Airport were investigating the aircraft.

“The safety of our guests is our utmost priority,” the airline said in a statement. “AirAsia Indonesia apologises for any inconvenience caused.”

In June, passengers spoke of how an AirAsia flight captain told them to start prayingafter the aircraft started “shaking like a washing machine”.

Watch video click here