Sustainability in production and consumption is increasing in importance in many diverse industries worldwide. The wine industry is no exception. There are many wine-related eco-certifications that incorporate sustainability concepts; however, it is unknown to what extent wine consumers value such certifications in wine-producing countries such as Chile. An online survey was conducted in which 526 Chilean wine consumers were asked about their attitudes towards and willingness to pay for sustainably produced wines. Statistical analysis was undertaken using multiple linear regression. It is notable that 76% of respondents had previously purchased eco-certified wines (fairtrade, biodynamic, organic, natural, and sustainable), and there was an evident willingness to buy eco-certified wines in the future-78% expressed a willingness to buy organic wines, and 77% sustainable wines. Furthermore, we asked how much more willing the respondents would be to pay for wines with eco-certification; 22% indicated that they would be willing to pay a premium price, ranging from USD 5 to USD 16 more, for organic wines, while 19% expressed a willingness to pay the same price premium for sustainable wines.