IndiGo has adopted several cost reduction strategies to become one of the most profitable airlines in India. It operates a single type of aircraft (Airbus A320) which allows for streamlined training, maintenance and parts inventory. IndiGo also offers no-frills economy flights without meals or entertainment to reduce costs. Additionally, IndiGo maintains a young average fleet age of 4 years through bulk purchases and short-term leasing to benefit from fuel efficiency and avoid lengthy maintenance checks required for older aircraft. These strategies have helped IndiGo achieve strong financial performance with large profits in recent years.