A Qantas flight from Auckland that this afternoon issued a mayday call has landed safely.

Emergency services were on stand-by as a precaution with the plane reporting engine trouble while in the air.

QF144 left Auckland at 2.11pm and was due to arrive in Sydney at 3.25pm, local time.

Flight tracking website FlightRadar24 showed its departure was delayed by about an hour.

Main image: Screenshot/FlightAward