Heihe Aihui Airport (IATA: HEK, ICAO: ZYHE) serves Heihe, a city in Heilongjiang Province in northeastern China, situated on the bank of the Amur River directly across from Blagoveshchensk, Russia. The airport provides essential air connectivity for this remote border region, linking it to major Chinese cities. The airport handles a modest volume of domestic traffic, with routes primarily connecting Heihe to hubs such as Beijing, Harbin, and other cities in northeastern China. Its cross-border location gives it strategic importance as part of China-Russia trade and tourism infrastructure. Given Heihe's geographic isolation and harsh winters, air transport plays a critical role in the region's accessibility, particularly during months when road and river transport may be limited.