The aviation industry has been developing dynamically in recent years, but on the other hand, it faces the challenge of reducing CO2 emissions, striving to achieve climate neutrality by 2050. One of the solutions is the development of sustainable aviation fuels (SAF), which are biofuels that significantly reduce greenhouse gas emissions. This work aims to determine the carbon footprint in the life cycle of SAFsustainable aviation fuels produced by the Alcohol-to-Jet (ATJ) conversion method in two variants: Well to Wake and Well to Tank for selected energy plants: energy willow (Salix viminalis), giant miscanthus (Miscanthus x giganteus), and hybrid poplar (Populus sp.). In the case of well-to-tank emissions, the overall emissions equaled 1049.82 kgCO2eq/Mg, 987.78 kgCO2eq/Mg, and 990.25 kgCO2eq/Mg for energy willow, giant miscanthus, and hybrid poplar, respectively. The well-to-wake emissions are more than two times higher than wake-to-tank. However, comparing well-to-wake emissions with conventional aviation fuels, Jet A-1 shows a decrease of 46.4%, 45.7%, and 44.1% for hybrid poplar, giant miscanthus, and energy willow, respectively. The results indicate that ATJ-SAF produced from domestic energy crops can substantially surpass regulatory emission reduction targets, underscoring their strong potential to contribute to aviation decarbonization.