John Keells Airline Division, comprising of the first ISO 9002 certified GSA's in Sri Lanka, Walkers Air Services (Pvt) Ltd & Mack Air Ltd together with Matheson Keells Air Services (Pvt) Ltd in India & Mack Air Services Maldives (Pvt) Ltd in the Maldives represent American Airlines, Asiana Airlines, AirEurope, Air 2000 Cargo, Gulf Air, GMG Airlines, Jet Airways, LTU International Airways, Leisure Cargo, Swiss Worldcargo, Volare Airlines in Sri Lanka and in some cases in India and the Maldives.