Hundreds of people in the lines to be rescreened at Auckland airport's domestic terminal.

A security breach at Auckland Airport on Sunday morning left hundreds of frustrated passengers lining up outside the door, and also affected some flights at Wellington Airport.

The breach was caused by a passenger re-entering a secure area through an unauthorised door, an Auckland Airport spokeswoman said.

The passenger was identified quickly on CCTV cameras.

Steve Biddle/Twitter Massive queues, the length of the terminal, are growing in Auckland's domestic terminal.

However, Aviation Security made the decision to re-screen passengers because of the security breach.

Everyone was moved out of "airside" and brought back through to be rescreened, she said.

Although the spokeswoman said the situation in Auckland had returned to normal by about 11am, the impact was also being felt in Wellington.

MARTIN DE RUYTER/STUFF Passenger faced delays after a security breach at Auckland's domestic terminal on Sunday morning.

Wellington Airport media spokesman Greg Thomas said the airport was having to rescreen some flights due to the security screening issue in Auckland.

It was not something that had occurred often, he said.

"There are going to be some delays to flights.

"It's not going to affect everyone throughout the day, but it will be a 15-30 minute delay for some flights."



No sure what's happening at Auckland airport. The queue for domestic screening goes all the way back to Air NZ baggage claim. Hundreds of people waiting. pic.twitter.com/FLiIw81nET — Steve Biddle (@stevebiddle) May 19, 2018

A passenger at Auckland airport confirmed the line was the "length of the terminal".

Passengers could check departure information for any flights affected.