Seoul (ICN) to Irkutsk (IKT): 1,476 miles (2,376 km) great-circle, about 3h 25m nonstop by our estimate. Cheapest fare observed: $723 round-trip on Asiana, with 1 stop, departing July 3, 2026.
$723 round-trip, Asiana OZ331, departing 2026-07-03 at 08:20, returning 2026-07-22. The recorded itinerary left on a Friday, returning on a Wednesday 19 nights later; the fare was observed 69 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $723, it ranked 25th of the 30 round-trip fares we recorded from ICN (median $393). That is 49.0 cents per great-circle mile (round-trip price over one-way distance), above the ICN median of 21.3 cents across 30 round-trip routes.
Routes from ICN of similar length: Hong Kong (1,286 mi) at $219 and Guangzhou (1,246 mi) at $271.
ICN to IKT is the only one of 30 ICN routes where Asiana priced cheapest. It is the 18th longest of the 30 routes we track from ICN.
Of 17 departure airports with a fare to Irkutsk, Seoul (ICN) ranked 5th at $723. Lowest: $342 from Beijing (PEK); highest: $1507 from Nairobi (NBO); 4 nonstop. Cheapest-fare airlines (routes): Air China (4), S7 Airlines (3), Egyptair (2), Asiana (1), China Eastern (1) and MIAT Mongolian Airlines (1), plus 5 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Seoul, Asia/Irkutsk; flight time is our estimate.