David Beirman, University of Technology Sydney After its worst two years since the second world war, 2022 is looking brighter for the global airline industry. For passengers, though, the chance to travel at low cost again may prove short-lived. In 2020 international passenger demand was less than 25% that of 2019, according to the International Air Transport Association. 2021 data isn’t yet available, but the hiccups of the Delta and Omicron variants make the association’s forecasts of 50% of 2019 levels look optimistic. With international and domestic routes reopening, airlines are offering a range of special deals on airfares. These deals are partly to entice back uncertain travellers and partly…