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

Return flights

15 Oct - 24 Oct	Air China
12 Oct - 19 Oct	Air China
14 Oct - 24 Oct	Air China
05 Oct - 20 Oct	Air China
18 Oct - 24 Oct	China Southern
16 Oct - 24 Oct	China Southern
17 Oct - 24 Oct	Air China
23 Oct - 01 Nov	Singapore Airlines
21 Oct - 01 Nov	Singapore Airlines
05 Oct - 16 Oct	Vietnam Airlines
20 Oct - 31 Oct	MIAT Mongolian Airlines
18 Oct - 22 Oct	China Southern
29 Oct - 05 Nov	Emirates

Also check the deals for one-way flights from Seoul to London 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 Seoul to London in October from 643€

Return flights