Hanoi (HAN) to Hong Kong (HKG): 526 miles (846 km) great-circle, about 1h 35m nonstop by our estimate. Cheapest fare observed: $212 round-trip on HK Express, nonstop, departing May 21, 2026.
$212 round-trip, HK Express UO541, departing 2026-05-21 at 09:35, returning 2026-05-24. The recorded itinerary left on a Thursday, returning on a Sunday 3 nights later; the fare was observed 26 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $212, it ranked 11th of the 30 round-trip fares we recorded from HAN (median $271). That is 40.3 cents per great-circle mile (round-trip price over one-way distance), above the HAN median of 25.9 cents across 30 round-trip routes.
Routes from HAN of similar length: Quy Nhon (545 mi) at $131 and Guangzhou (502 mi) at $192.
HAN to HKG is the only one of 30 HAN routes where HK Express priced cheapest. It is the 28th longest of the 30 routes we track from HAN.
Of 24 departure airports with a fare to Hong Kong, Hanoi (HAN) ranked 6th at $212. Lowest: $171 from Shanghai (PVG); highest: $1773 from Orlando (MCO); 13 nonstop. Cheapest-fare airlines (routes): HK Express (7), Cathay Pacific (2), Shandong Airlines (2), United Airlines (2), Alaska Airlines (1) and Emirates (1), plus 9 more.
The reverse, Hong Kong (HKG) to Hanoi (HAN), was $213 round-trip on HK Express, nonstop, departing June 9, 2026. Hong Kong to Hanoi flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Ho_Chi_Minh, Asia/Hong_Kong; flight time is our estimate.