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

Return flights

13 Oct - 22 Oct	Lufthansa
16 Oct - 21 Oct	Lufthansa
21 Oct - 28 Oct	Lufthansa
12 Oct - 21 Oct	Lufthansa
05 Oct - 12 Oct	Lufthansa
17 Oct - 26 Oct	Air China
24 Oct - 31 Oct	Air China
17 Oct - 31 Oct	Air China
11 Oct - 17 Oct	Air China
16 Oct - 31 Oct	Air China
25 Oct - 01 Nov	Air China
18 Oct - 01 Nov	Air China
25 Oct - 01 Nov	Korean Air	direct
18 Oct - 01 Nov	Korean Air	direct

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 579€

Return flights