AirHint found the following cheapest return flights from London (LGW) to Seoul (ICN) in October 2025 (see full year).

Return flights

28 Oct - 07 Nov	China Southern
28 Oct - 03 Nov	China Southern
30 Oct - 10 Nov	China Eastern
28 Oct - 06 Nov	China Eastern
30 Oct - 04 Nov	China Eastern
31 Oct - 10 Nov	China Eastern
31 Oct - 12 Nov	China Eastern
30 Oct - 05 Nov	China Eastern
31 Oct - 05 Nov	easyJet
28 Oct - 26 Nov	China Eastern
26 Oct - 28 Oct	easyJet
26 Oct - 29 Oct	easyJet
24 Oct - 27 Oct	easyJet
24 Oct - 29 Oct	Wizz Air
27 Oct - 31 Oct	easyJet
27 Oct - 30 Oct	easyJet
24 Oct - 28 Oct	easyJet
26 Oct - 30 Oct	easyJet
25 Oct - 28 Oct	China Southern
24 Oct - 31 Oct	Wizz Air

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 452€

Return flights