Beijing (PEK) to Seoul (SEL): 560 miles (902 km) great-circle, about 1h 35m nonstop by our estimate. Cheapest fare observed: $234 round-trip on Asiana, nonstop, departing May 24, 2026.
$234 round-trip, Asiana OZ5039, departing 2026-05-24 at 17:10, returning 2026-06-13. The recorded itinerary left on a Sunday, returning on a Saturday 20 nights later; the fare was observed 29 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $234, it ranked 4th of the 30 round-trip fares we recorded from PEK (median $408). That is 41.8 cents per great-circle mile (round-trip price over one-way distance), above the PEK median of 26.1 cents across 30 round-trip routes.
Routes from PEK of similar length: Shanghai (668 mi) at $208 and Vladivostok (833 mi) at $213.
PEK to SEL is the only one of 30 PEK routes where Asiana priced cheapest. It is the 30th longest of the 30 routes we track from PEK.
Of 24 departure airports with a fare to Seoul, Beijing (PEK) ranked 7th at $234. Lowest: $142 from Osaka (KIX); highest: $1288 from Portland (PDX); 10 nonstop. Cheapest-fare airlines (routes): Jetstar (2), Peach Aviation (2), airline 9G (1), airline WE (1), Alaska Airlines (1) and Asiana (1), plus 16 more.
That depends on your passport and trip, so check the official source for South Korea: Republic of Korea: K-ETA. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Shanghai, Asia/Seoul; flight time is our estimate.