In response to the changing landscape of transnational surrogacy, the industry has introduced flexible business models requiring women to move within and across borders to act as surrogate mothers. However, knowledge about their experiences remain vague, particularly concerning women traveling abroad under illegal conditions. Building upon interviews with Thai surrogate mothers, I demonstrate how their im/mobility reveals critical insights into labor conditions and power relations and is formed within the global reproductive industry as well as the specific national context. I also argue that the women's im/mobility and flexibility are central when making themselves bioavailable for the global surrogacy market.