Lufthansa is putting its Airbus A380 jets back into service as demand for tickets soars. The world’s largest passenger aircraft is due to be back in the air from summer 2023, Lufthansa said on Monday. The move comes after the German airline had taken its A380 fleet out of service due to the pandemic, and had virtually ruled out using the aircraft for some time. Lufthansa said Monday’s announcement was also due to delays in the delivery of other kinds of aircraft. Lufthansa still has 14 A380s, but has sold six of them already. The remaining eight aircraft are to remain in the fleet until furthe…