AirHint found the following cheapest return flights from Colombo (CMB) to Seoul (ICN) in September 2026 (see full year).
Return flights
| 12 Sep - 20 Sep | AirAsia | ||
| 13 Sep - 21 Sep | AirAsia | ||
| 15 Sep - 12 Oct | AirAsia | ||
| 16 Sep - 22 Sep | AirAsia | ||
| 15 Sep - 12 Oct | SriLankan Airlines | direct | |
| 13 Sep - 21 Sep | SriLankan Airlines | direct |
Also check the deals for one-way flights from Colombo to Seoul in September.
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