It leases Boeing and Airbus aircraft to major airlines worldwide, including Aeroméxico, Air Canada, Asiana Airlines, Korean Air, Cathay Pacific, Cyprus Airways, Air France-KLM, Lufthansa, Alaska Airlines, American Airlines, Air India, United Airlines, Norwegian Air Shuttle, Pakistan International Airlines, South African Airways, Emirates, Gulf Air and most recently, Delta Air Lines.
Среди клиентов ILFC — авиакомпании Aeroméxico, Air Canada, Asiana Airlines, Korean Air, Cathay Pacific, Cyprus Airways, Air France-KLM, Lufthansa, Alaska Airlines, American Airlines, Air India, United Airlines, Norwegian Air Shuttle, Pakistan International Airlines, Emirates, Gulf Air, а с недавним пор и Delta Air Lines.