The study examines Malaysian airline passengers' travel behaviour and perceptions during the endemic Covid-19 after Malaysia re-opened the border. People are free to do an activity, especially travelling by aeroplane. Data were collected through an online platform in 2023. 390 data were obtained and used for the analysis. Findings reveal that 86.15% of Malaysian have travelled by aeroplane since the endemic, and 14.10% have travelled more than five times. 54.44% strongly agree they will avoid travelling with aircraft because of a few personal issues. In addition, results revealed a significant change in passengers' behaviour and perception when travelling after the hit of Covid-19 worldwide. Keywords: Willingness to pay; Travel Behavior; Malaysian airline; Voluntary carbon offsets eISSN: 2398-4287 © 2023. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v8i23.4502