Seoul (ICN) to Guangzhou (CAN): 1,246 miles (2,006 km) great-circle, about 3h 00m nonstop by our estimate. Cheapest fare observed: $271 round-trip on Hainan Airlines, with 1 stop, departing May 8, 2026.
$271 round-trip, Hainan Airlines HU450, departing 2026-05-08 at 21:30, returning 2026-05-15. The recorded itinerary left on a Friday, returning on a Friday 7 nights later; the fare was observed 13 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $271, it ranked 12th of the 30 round-trip fares we recorded from ICN (median $393). That is 21.7 cents per great-circle mile (round-trip price over one-way distance), close to the ICN median of 21.3 cents across 30 round-trip routes.
Routes from ICN of similar length: Ulaanbaatar (1,216 mi) at $359 and Hong Kong (1,286 mi) at $219.
ICN to CAN is the only one of 30 ICN routes where Hainan Airlines priced cheapest. It is the 20th longest of the 30 routes we track from ICN.
Of 28 departure airports with a fare to Guangzhou, Seoul (ICN) ranked 7th at $271. Lowest: $192 from Hanoi (HAN); highest: $1335 from San Francisco (SFO); 7 nonstop. Cheapest-fare airlines (routes): Cathay Pacific (4), Air China (3), 9 Air (2), China Eastern (2), Hainan Airlines (2) and Qatar (2), plus 11 more.
The reverse, Guangzhou (CAN) to Seoul (SEL), was $258 round-trip on Xiamen Airlines, 1 stop, departing May 14, 2026. Guangzhou to Seoul flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Seoul, Asia/Shanghai; flight time is our estimate.