Hundreds of passengers have been delayed after a security breach at Auckland Airport this morning.

A spokesperson for the Airport said there had been an incident at the domestic terminal resulting in passengers having to be rescreened.

"We had a security breach which has been dealt with, and the screening process has been restarted."

He said everything was back to normal.

Advertisement

The breach was reported to have been caused by a passenger re-entering a secure area through an unauthorised door.

It wasn't clear how many people had been affected by the delays.

A passenger at the airport said there had been an announcement saying the descreening was necessary to comply with aviation security.

"Everyone was sent out of the lounge and gates and back through security but it looks like it's clearing now."

She said her flight had been delayed as well as some others.