The aviation sector historically contributes to climate warming due to non-CO2 effects like contrail cirrus cloud formation. While mitigation options like operational improvements face challenges, the emergence of hydrogen and electric aircraft offers hope. Direct Air Capture (DAC) and Green Hydrogen are promising solutions to curb aviation emissions, with DAC being utilized for offsetting emissions and synthetic fuel production. DAC deployment can benefit from direct air capture technology, which has small footprints and scalability potential. A study explores the cost-effectiveness of DACCU-based synthetic fuels compared to DACCS offsets, aiming for climate neutrality by 2050. Global trends in countries like Chile and Australia position them as renewable energy producers and exporters of green hydrogen. By analyzing future costs and policy implications, decision-makers can enable DACCU to become competitive with DACCS, offering actionable insights for a sustainable aviation industry.