Flights Seoul — Heihe is a popular route. The straight-line distance is 1 410 km. Flight time 2h 10m. Time difference -1h.
From Seoul (SEL) flights depart from 1 airport: ICN. To Heihe (HEK) — 1 arrival airport: HEK.
2 airlines operate on this route: China Southern Airlines, Asiana Airlines.
The minimum price for the next 3 months — from $176 (21.11.2026). The cheapest dates are highlighted in the calendar above.
The average ticket price — $186, ranging from $176 to $262. Book 1–3 months in advance to get the best deals.
Cheapest day to fly — Sunday.