Sondok Airport — Sŏndŏng-ni, North Korea

Sondok Airport (DSO) is a medium-sized airfield located near Sŏndŏng-ni in North Korea's South Hamgyong Province, serving the broader Hamhung-Hungnam industrial region. As with most airfields inside North Korea, publicly verifiable information about Sondok's infrastructure, traffic volumes, and operational history is extremely limited, since the country restricts independent reporting and aviation data disclosure. Available records classify it as a dual-use facility, primarily supporting military and state aviation activity rather than scheduled commercial passenger flights of the kind found at major international hubs. It is not part of any regular international airline network, and travelers should not expect commercial ticketing, terminals, or passenger services comparable to Western airports. The DSO code exists mainly for aviation reference and mapping purposes rather than for booking or route-planning use by the general public.