This study examines the implementation of a global exchange project-based learning (PBL) program in a university-level English education context. By integrating online exchange, field-based interviews in the Philippines, and digital content production, the study explores how students engage in intercultural interaction through experiential learning. The study adopted a process-oriented perspective to examine how intercultural learning developed progressively through multiple stages of interaction, beginning with online exchange and extending to field-based engagement. Through interactions with local participants, students engaged in spontaneous communication, negotiated meaning, and explored cultural differences and similarities. In particular, field-based interaction provided qualitatively different learning conditions from online exchange by requiring learners to respond to unpredictability and negotiate meaning in authentic contexts. In addition, digital storytelling through student-generated video content and VR-based artifacts mediated reflective learning, enabling students to reinterpret their intercultural experiences. These findings suggest that global exchange PBL offers a process-oriented framework for integrating intercultural interaction and digitally mediated reflection in English language education.