International students aspiring to enroll in a commercial pilot course in delhi must first secure a student visa or an appropriate visa that permits educational training in India. They must meet the same eligibility criteria as Indian students, which include passing the 10+2 level of education with Physics and Mathematics and clearing the medical examinations as prescribed by the DGCA. Since English is the medium of instruction and communication in aviation, non-native English speakers may need to prove their proficiency through standardized tests or certifications. It's advisable for international students to contact the respective flying schools directly to understand any additional requirements or assistance provided for international enrollees, including accommodation and logistics.