Hong Kong (HKG) to Da Nang (DAD): 571 miles (920 km) great-circle, about 1h 40m nonstop by our estimate. Cheapest fare observed: $240 round-trip on HK Express, nonstop, departing June 18, 2026.
$240 round-trip, HK Express UO552, departing 2026-06-18 at 08:25, returning 2026-06-24. The recorded itinerary left on a Thursday, returning on a Wednesday 6 nights later; the fare was observed 54 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $240, it ranked 9th of the 30 round-trip fares we recorded from HKG (median $303). That is 42.0 cents per great-circle mile (round-trip price over one-way distance), above the HKG median of 22.1 cents across 30 round-trip routes.
Routes from HKG of similar length: Hanoi (526 mi) at $213 and Manila (712 mi) at $246.
HK Express had the cheapest fare on 10 of 30 HKG routes. It is the 28th longest of the 30 routes we track from HKG.
Of 16 departure airports with a fare to Da Nang, Hong Kong (HKG) ranked 8th at $240. Lowest: $112 from Hanoi (HAN); highest: $1135 from Reykjavik (KEF); 9 nonstop. Cheapest-fare airlines (routes): AirAsia (2), Vietravel Airlines (2), Air Seoul (1), Emirates (1), HK Express (1) and Indonesia AirAsia (1), plus 8 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Hong_Kong, Asia/Ho_Chi_Minh; flight time is our estimate.