Located about 30km south of Phnom Penh, Techo International Airport is expected to be initially capable of handling up to 13 million passengers a year. KANDAL, Cambodia: Cambodia expects that its new airport serving the capital will open in July, a project official said Friday (Mar 21), in a major step forward in boosting the country's lucrative tourism sector, whose growth was interrupted by the COVID-19 pandemic. Work on Phnom Penh’s new airport, officially known as Techo International