Airbus has finalised a purchase agreement with US based Spirit Airlines for 100 A320neo Family aircraft.
Last autumn, the two parties signed and announced a memorandum of understanding (MoU) for the purchase of a mix of A319neo, A320neo, and A321neo.
That 100 jet deal - worth around £8bn at list prices - has now been signed off.
It is a boost to the wing assembly plant at Broughton in North Wales and Filton, near Bristol.
This comes after a bumper year for Airbus in which sources say the
Spirit is based in South Florida and is the fastest-growing airline in the United States, with flights throughout the US, Latin America and the Caribbean.
The airline will announce an engine selection at a later date.
Firm orders worldwide for the A320neo Family now have surpassed 7,300 from more than 110 global customers.
Featuring the widest single-aisle cabin in the sky, the best-selling A320neo Family, comprising the A319neo, A320neo, and A321neo, will deliver a fuel-burn reduction of approximately 20% as well as 50 percent less noise compared to previous generation aircraft.