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

Return flights

28 Oct - 08 Nov	KLM
29 Oct - 05 Nov	KLM
28 Oct - 05 Nov	KLM
07 Oct - 14 Oct	Lufthansa
26 Oct - 08 Nov	KLM
25 Oct - 08 Nov	KLM
31 Oct - 07 Nov	KLM
26 Oct - 03 Nov	KLM
16 Oct - 21 Oct	SWISS
01 Oct - 08 Oct	KLM
30 Oct - 10 Nov	KLM
20 Oct - 28 Oct	SWISS
30 Oct - 06 Nov	KLM
02 Oct - 07 Oct	KLM
19 Oct - 29 Oct	Lufthansa
30 Oct - 07 Nov	KLM
11 Oct - 25 Oct	KLM
19 Oct - 28 Oct	SWISS
19 Oct - 26 Oct	British Airways
03 Oct - 17 Oct	KLM

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

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 October from $913

Return flights