AirHint found the following cheapest return flights from London (LCY) to Seoul (ICN) in March 2026 (see full year).

Return flights

18 Mar - 27 Mar	KLM
08 Mar - 17 Mar	KLM
02 Mar - 12 Mar	KLM
09 Mar - 22 Mar	KLM
18 Mar - 01 Apr	KLM
01 Mar - 13 Mar	KLM
16 Mar - 21 Mar	KLM
01 Mar - 15 Mar	KLM
06 Mar - 13 Mar	KLM
06 Mar - 22 Mar	KLM
06 Mar - 08 Mar	KLM
31 Mar - 09 Apr	KLM
19 Mar - 09 Apr	KLM
31 Mar - 14 Apr	KLM
31 Mar - 07 Apr	KLM
26 Mar - 11 Apr	KLM
30 Mar - 13 Apr	KLM
25 Mar - 15 Apr	KLM
30 Mar - 14 Apr	KLM
20 Mar - 06 Apr	KLM

Also check the deals for one-way flights from London to Seoul in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Seoul in March from $849

Return flights