Indonesian airlines are enjoying a rebound in demand this year thanks to the easing of COVID-19 restrictions, but analysts say high costs complicate their recovery and could even derail it. Carriers counted 24.6 million passengers on domestic flights in the first half of this year, up more than 57 percent from the same period last year, but still below numbers recorded before the coronavirus pandemic. Two newcomers to the scheduled flights segment, Pelita Air and Super Air Jet, entered the domestic market over the past year and are planning fast expansion to seize the moment.