PARIS—Air France took delivery of its first compact Airbus A220 jetliner on Tuesday, pledging greater comfort and lower emissions on short routes as its Franco-Dutch parent pushes ahead with a broader fleet shake-up to streamline costs. The French airline, part of the Franco-Dutch Air France-KLM group, said the 148-seat, Canadian-designed jet would reduce fuel consumption and emissions by 20 percent after entering European service with a flight to Berlin on Oct 31. Air France ordered 60 of the planes in 2019, with options for at least 30 more, to replace the smallest members of the Airbus single-aisle portfolio, the A318 and A319. The unveiling illustrated a shift of emphasis from the world’s largest jets to some of the smallest as airlines play up the lower cost and environmental benefits of light new models. The audience of 300 guests including politicians gathered in a hangar originally built for the Airbus A380 …