ILFC has agreed to purchase up to 15 Airbus A321 aircraft, scheduled for delivery through 2015, according to a regulatory filing.
The agreement, which was entered into on 19 July with Airbus, involves the lease of the units to a single airline, says ILFC.
On 17 July, the US lessor finalised its earlier agreement to take 50 firm Embraer 190-E2 and 195-E2 aircraft, the re-engined versions of the largest members of the E-Jets family.
ILFC is taking 25 of each type and has also taking options on the same number again, giving it up to 100 E2 aircraft overall.
Deliveries of the aircraft are expected to begin in 2018 and finish in 2022.