Seoul (ICN) to Da Nang (DAD): 1,852 miles (2,981 km) great-circle, about 4h 10m nonstop by our estimate. Cheapest fare observed: $215 round-trip on Air Seoul, nonstop, departing May 20, 2026.
$215 round-trip, Air Seoul RS511, departing 2026-05-20 at 20:55, returning 2026-05-23. The recorded itinerary left on a Wednesday, returning on a Saturday 3 nights later; the fare was observed 25 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $215, it ranked 6th of the 30 round-trip fares we recorded from ICN (median $393). That is 11.6 cents per great-circle mile (round-trip price over one-way distance), below the ICN median of 21.3 cents across 30 round-trip routes.
Routes from ICN of similar length: Nha Trang (2,057 mi) at $198 and Irkutsk (1,476 mi) at $723.
ICN to DAD is the only one of 30 ICN routes where Air Seoul priced cheapest. It is the 17th longest of the 30 routes we track from ICN.
Of 16 departure airports with a fare to Da Nang, Seoul (ICN) ranked 7th at $215. 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/Seoul, Asia/Ho_Chi_Minh; flight time is our estimate.