With leased Lockheed L-1011 Tristar and Boeing 737 aircraft joining the fleet, by 1976 Gulf Air had expanded its route network to include Amman, Amsterdam, Athens, Baghdad, Bombay, Bangkok, Beirut, Cairo, Colombo, Delhi, Dhaka, Hong Kong, Jeddah, Karachi, Khartoum, Larnaca, Manila, Paris, Ras al-Khaimah and Sana'a. The fleet comprised four Vickers VC10, three BAC One-Elevens, two Lockheed L-1011 Tristar 200s and five Boeing 737-200s. In 1978, the airline doubled the Tristar fleet to replace the VC10s. Meanwhile, the airline increased the Boeing 737 fleet to nine and phased out the One-Elevens.
