Hailar (HLD) — Wuhai (WUA): how long is the flight?
HLD — WUA: scheduled duration in the saved data is 3 hr 5 min, the median of available flights.
HLD — WUA: what is the distance?
The straight-line distance between airports HLD and WUA is about 1,467 km, not the actual flight path.
Airlines on this route
The saved board for HLD — WUA lists these airlines: Chengdu Airlines.