More than 20 Virgin Blue staff and managers from Sydney and Brisbane airports have been sacked for repeatedly using the airline's computers to view and swap pornography.

"We absolutely do not tolerate any misconduct," said public affairs manager Danielle Keighery.

Sources close to the airline said those involved were mainly baggage handlers who repeatedly used work computers in offices and staff rooms to watch pornography and then swap material deemed "good".

"There were so many caught on the same shift they [the airline] could not suspend them due to having no staff to replace them."

Ms Keighery declined to comment on whether those involved were baggage handlers or whether they or their managers were involved in swapping the pornographic material.

She said an email had been sent out across the company last Wednesday "reminding staff of their obligations".

"We have very clear code of conduct for all our staff that gives guidelines around computer usage and the appropriate use of the internet."

This story is available in full at smh.com.au.