Boeing and International Airlines Group (IAG) have announced an order for a combined total of 50 737-8-200s and 737-10s, plus 100 options that was first flagged at the 2019 Paris Air Show. The IAG of airlines consists of Aer Lingus, British Airways, Iberia, Iberia Express, LEVEL, Vueling and IAG Cargo. "The addition of new Boeing 737s is an important part of IAG´s short-haul fleet renewal. These latest-generation aircraft are more fuel-efficient than those they will replace and in line with our commitment to achieving net-zero carbon emissions by 2050," said Luis Gallego, IAG´s chief executive. The 737-8-200 will enable IAG to configure the aircraft with up to 200 seats, increasing revenue potential and reducing fuel consumption. SEE the podcast: Flight Safety Detectives dissect the Netflix doco “Downfall”. READ: Boeing will bounce back says world’s largest leasing company READ: How the Airbus A350 went from defeat to victory READ: Can the giant AN-225 fly again? The largest model in the family, the 737-10 seats up to 230 passengers in a single-class configuration and can fly up to 3,300 miles. "With the selection of the 737-8-200 and larger 737-10, IAG has invested in a sustainable and profitable future, as both variants will significantly lower operating costs and CO₂ emissions," said Stan Deal, president and CEO of Boeing Commercial Airplanes. "Today's agreement for up to 150 airplanes, including 100 options, is a welcome addition of the 737 to IAG´s short-haul fleets and reflects our commitment to support the Group's continued network recovery and future growth with Boeing's unrivalled family of airplanes." Boeing says the 737 family of aircraft is on average 14 per cent more fuel-efficient than today's most efficient Next-Generation 737s and 20 per cent more efficient than the original Next-Generation 737s when they entered service.