EasyJet had earlier said it had negotiated a reduced price with CFM, but that the details were confidential.
CFM, a joint venture between Safran SA and General Electric Co, will provide the engines for easyJet's order of 35 Airbus A320 aircraft and 100 Airbus A320neo aircraft.
CFM's rivals include Pratt & Whitney, a division of United Technologies Corp.
(Reporting by Sweta Singh in Bangalore; Editing by Kirti Pandey)