This case study investigates the multifaceted challenges encountered during the construction of the Candon City Airport, a significant infrastructure project in Ilocos Sur, Philippines. Using a qualitative case study design, data were gathered through structured interviews with First Northway Development and Construction Corporation engineers. The study categorizes the challenges into six key areas: financial, technical, regulatory, logistical, environmental, and stakeholder-related. Among these, logistical constraints and stakeholder management issues emerged as the most persistent and disruptive throughout the project's development. The findings highlight the importance of proactive planning, stakeholder engagement, and adaptive project management strategies. The study concludes by offering sustainable solutions and evidence-based recommendations to enhance the implementation of future large-scale infrastructure projects in similar regional settings.