Colombo (CMB) to Seoul (SEL): 3,584 miles (5,768 km) great-circle, about 7h 40m nonstop by our estimate. Cheapest fare observed: $575 round-trip on China Eastern, with 2 stops, departing May 15, 2026.
$575 round-trip, China Eastern MU6018, departing 2026-05-15 at 20:30, returning 2026-05-28. The recorded itinerary left on a Friday, returning on a Thursday 13 nights later; the fare was observed 20 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $575, it ranked 17th of the 30 round-trip fares we recorded from CMB (median $495). That is 16.0 cents per great-circle mile (round-trip price over one-way distance), below the CMB median of 22.4 cents across 30 round-trip routes.
Routes from CMB of similar length: Cairo (3,512 mi) at $581 and Sochi (3,478 mi) at $963.
CMB to SEL is the only one of 30 CMB routes where China Eastern priced cheapest. It is the 7th longest of the 30 routes we track from CMB.
Of 24 departure airports with a fare to Seoul, Colombo (CMB) ranked 19th at $575. 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/Colombo, Asia/Seoul; flight time is our estimate.