Seoul: NSW premier Gladys Berejiklian will consider creating a free economic zone around the Badgerys Creek airport to encourage global companies to move into an "aerotropolis", bringing high-quality engineering, robotics, defence and agribusiness jobs.

NSW will host an Aerotropolis 2026 summit in the middle of next year, calling for international investment proposals and ideas on how to build Badgerys Creek airport as an integrated new city that will boost the economy of western Sydney.

Premier Gladys Berejiklian tries a flight simulator at Incheon airport, Seoul.

"This will change lives," she said, of the expected jobs boost from the aerotropolis.

Speaking an Incheon airport in Seoul, which is consistently ranked as the world's top airport, Ms Berejiklian said she wanted to model Badgerys Creek on Incheon aerotropolis, and learn from its successes and mistakes.