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

Return flights

23 Oct - 25 Nov	China Eastern
21 Oct - 04 Nov	China Eastern
24 Oct - 04 Nov	China Southern
16 Oct - 23 Oct	Air China
17 Oct - 23 Oct	Air China
27 Oct - 30 Oct	China Southern
13 Oct - 30 Oct	China Southern
15 Oct - 23 Oct	Air China
13 Oct - 19 Oct	Air China
19 Oct - 23 Oct	Air China
13 Oct - 20 Oct	Air China
16 Oct - 21 Oct	Air China
18 Oct - 24 Oct	Air China
19 Oct - 05 Nov	China Eastern
22 Oct - 05 Nov	Emirates
29 Oct - 06 Nov	Emirates
29 Oct - 24 Nov	Emirates
27 Oct - 27 Nov	Emirates
29 Oct - 05 Nov	Emirates
31 Oct - 04 Nov	Air China

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 528€

Return flights