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

Return flights

09 Mar - 17 Mar	Lufthansa
16 Mar - 24 Mar	KLM
18 Mar - 01 Apr	Lufthansa
03 Mar - 10 Mar	ITA Airways
11 Mar - 15 Mar	KLM
09 Mar - 15 Mar	KLM
18 Mar - 26 Mar	KLM
16 Mar - 23 Mar	KLM
19 Mar - 26 Mar	KLM
02 Mar - 12 Mar	KLM
02 Mar - 10 Mar	KLM
18 Mar - 08 Apr	Lufthansa
23 Mar - 08 Apr	Lufthansa
24 Mar - 07 Apr	SWISS
25 Mar - 01 Apr	Lufthansa
31 Mar - 07 Apr	SWISS
21 Mar - 07 Apr	SWISS
19 Mar - 09 Apr	SWISS
20 Mar - 17 Apr	Luxair
24 Mar - 08 Apr	SWISS

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 $786

Return flights