Taxi goes up in flames at Brisbane Airport

A taxi that caught alight outside the Brisbane Airport's domestic terminal went up in flames in a matter of minutes, a witness says.

The parked maxi taxi caught fire shortly after 9am, sending flames several metres into the air.

Isaac Irvin had stepped off a flight from Sydney and was walking towards the cab rank when he noticed smoke coming from the car's engine.

"In about a minute after that it had caught alight," he told AAP.

"The whole thing only took about two and a half minutes and then it was gone."

Mr Irvin, a social media account executive, said everyone kept their distance once they saw the smoke.

No one was injured by the fire which left the taxi a blackened shell.

Brisbane Airport tweeted there could be delays for some people leaving the terminal by taxi or bus but flights won't be impacted.