The plane landed safely with 110 passengers on board.

The flight, QF593, left Adelaide about 6.50am (local time) and touched down in Perth at 7.30am.

The co-pilot and air traffic control navigated the aircraft onto the airport's longest runway and, after it touched down, a tug was used to tow it to the Qantas domestic terminal.

An ambulance attended the airport to treat the captain as he walked off the plane.

A spokesman for the Australian Transport and Safety Bureau, which is investigating the incident, described the captain as "incapacitated" during the landing.

He has since been taken to a Perth hospital to be checked out and will remain in Perth to recover.

Qantas spokeswoman Kristy McSweeney said the captain had suffered from a "minor" health problem in the air and called ahead for the ambulance.

It is understood the captain fell sick about an hour away from Perth.

Ms McSweeney said the captain was not integral to the take-off or landing of a plane, with the first officer capable of landing the plane safely.

She said the flight was not delayed and the plane will continue on its planned flights.

Source: watoday.com.au