Matt O'Sullivan

Matt O'Sullivan is the Transport Reporter for The Sydney Morning Herald.

The flight delays and cancellations caused huge crowds to fill Sydney Airport's terminals.

Investigation into flight chaos caused by outage

An investigation has been launched into an air-traffic control outage at Sydney Airport that caused major disruptions for thousands of passengers after more than 340 flights were delayed or cancelled.

A fourth terminal at the airport will be built on what is now the Qantas jet base.

Fourth terminal for Sydney Airport as competition looms

A fourth terminal at Sydney Airport for international travellers that links to the existing domestic terminals are part of plans to handle strong passenger growth and a competing airport at Badgerys Creek in the city's west.

Urban Infrastructure Minister Paul Fletcher at the site for the new airport at Badgerys Creek on Tuesday.

Sydney Airport reveals worst-kept secret

Sydney Airport has turned down the opportunity to build and operate the new airport at Badgeys Creek because of the "considerable risks" its investors would bear for decades.