There are several ways to arrive and depart from Siem Reap, Cambodia. Flying in to Seim Reap by plane is the best option. Siem Reap International Airport is the second largest airport in Cambodia. Its modern architecture is based on the traditional Khmer style. Most flights arriving at Angkor International Airport are Vietnam Airlines, which offers services from Phnom Penh, Cambodia, Bangkok, Thailand or Ho Chi Minh City.