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

Return flights

29 Oct - 12 Nov	KLM
30 Oct - 30 Nov	KLM
29 Oct - 19 Nov	KLM
21 Oct - 04 Nov	SWISS
07 Oct - 21 Oct	Lufthansa
28 Oct - 11 Nov	Lufthansa
27 Oct - 03 Nov	Lufthansa
07 Oct - 14 Oct	Lufthansa
30 Oct - 15 Nov	KLM
28 Oct - 06 Nov	KLM
26 Oct - 09 Nov	Lufthansa
26 Oct - 02 Nov	Lufthansa
01 Oct - 07 Oct	Lufthansa
20 Oct - 28 Oct	SWISS
13 Oct - 28 Oct	Lufthansa
12 Oct - 25 Oct	Lufthansa
16 Oct - 28 Oct	SWISS
06 Oct - 15 Oct	Lufthansa
06 Oct - 26 Oct	Lufthansa
21 Oct - 29 Oct	Lufthansa

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 656€

Return flights