Purpose – This research creates a research model that emphasizes the moderating influence of ethical leadership (ELS) and the link between green training (ET) and employee environmental performance (EP) via green work engagement (GWE) in the aviation industry. Research methodology – We used a time-lagged research design for our study. Data were gathered from 253 respondents working for aviation companies in Vietnam and analyzed by SmartPLS 4.0. Findings – The findings show that ET has a beneficial effect on EP through GWE. Based on social exchange theory (SET), we discovered that ET increased EP, and that this favorable relationship was mediated via GWE. Research limitations – The future studies should widen to other developing countries and other services. Practical implications – We advised that green aviation companies provide ET to employees in order for them to obtain green knowledge and skills in order to alleviate environmental difficultiesPurpose – This research creates a research model that emphasizes the moderating influence of ethical leadership (ELS) and the link between green training (ET) and employee environmental performance (EP) via green work engagement (GWE) in the aviation industry. Research methodology – We used a time-lagged research design for our study. Data were gathered from 253 respondents working for aviation companies in Vietnam and analyzed by SmartPLS 4.0. Findings – The findings show that ET has a beneficial effect on EP through GWE. Based on social exchange theory (SET), we discovered that ET increased EP, and that this favorable relationship was mediated via GWE. Research limitations – The future studies should widen to other developing countries and other services. Practical implications – We advised that green aviation companies provide ET to employees in order for them to obtain green knowledge and skills in order to alleviate environmental difficulties