Airline Regional Express (Rex) has confirmed a passenger's iPhone started glowing red and emitted smoke on a flight from Lismore to Sydney last Friday.

The airline says the flight had landed in Sydney when the phone started emitting a "significant amount of dense smoke, accompanied by a red glow".

A flight attendant was able to extinguish the glow and no passengers on board were injured.

The matter has been reported to the Australian Transport Safety Bureau (ATSB) as well as the Civil Aviation Safety Authority (CASA) for investigation.

The iPhone has been handed over to the ATSB for analysis, and Rex will not comment further while investigations are ongoing.

Apple has been contacted for comment.