Flavonoids represent a general category of polyphenolic natural plant compounds, well known for their strong anti-inflammatory, anticancer, and antioxidant effects. With this demand ever-increasing, the urgency has been to have methods of extraction that are not only efficient and high yielding but also economic and friendly to the environment. Environmentally friendly procedures are becoming more acceptable compared to the traditional techniques of extraction. In addition, conventional processes are energy-intensive and time-consuming, which produce high amounts of waste that lead to environmental degradation and a high carbon footprint. In a bid to overcome these shortcomings, green extraction technologies have come up to help salvage the situation. Enzyme-assisted extraction, ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE), and supercritical fluid extraction are some of the most popular techniques that are used in both industrial and research contexts. Economically, the extraction of flavonoids is strongly dependent on the cost of raw material, the efficiency of the extraction process, and the market. Second, the unstable costs of raw materials and solvents can also affect profitability and deter the use of greener tech. Life cycle assessment and techno-economic analysis point out these tradeoffs in the fact that green technologies have less environmental impact in the long run, but their adoption is still low in specific cases. Crossing the sustainability and scalability divide could be hybrid extraction systems that would include MAE and UAE with solvent recovery, biorefinery models that would also produce flavonoids with biofuels or fibers, and policy interventions such as more stringent solvent regulations and subsidies on green technologies. Nonetheless, their wider application needs further research, the creation of infrastructure, and legislative assistance. As a way of satisfying the global demand ethically and sustainably, it will always be important to find a balance between environmental responsibility and economic practicality.