Irish-based lessor Avolon is ordering 100 Airbus A320neo-family jets, comprising 75 A320neos and 25 A321neos.
No engine selections have been disclosed. The jets will be delivered from 2023, the lessor confirms.
Avolon values the deal at $11.5 billion, and gives it over 265 aircraft on order with the airframer.
Chief executive Domhnal Slattery says the order “reflects our ambition to become the global leader in the sector”.
“The scale of the order reflects the long-term commitment and strategic perspective of our shareholders,” he adds.
“We continue to see robust demand from our customers for the A320neo family. This is consistent with our own market research and global fleet forecast.
“Our order affirms our belief in the medium-term market outlook and the strong growth prospects for our business.”
Avolon claims the agreement makes it the “largest aircraft lessor backlog customer” for Airbus. The Avolon backlog includes some 220 single-aisle and 45 twin-aisle jets.