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

Return flights

25 Oct - 06 Nov	Ryanair
17 Oct - 19 Oct	Ryanair
29 Oct - 13 Nov	Ryanair
17 Oct - 25 Oct	Ryanair
31 Oct - 12 Nov	Ryanair
17 Oct - 26 Oct	Ryanair
30 Oct - 08 Nov	Ryanair
25 Oct - 08 Nov	Ryanair
24 Oct - 29 Oct	Ryanair
31 Oct - 07 Nov	Ryanair
29 Oct - 08 Nov	Ryanair
15 Oct - 25 Oct	Ryanair
29 Oct - 03 Nov	Ryanair
24 Oct - 06 Nov	Ryanair
04 Oct - 11 Oct	Ryanair
19 Oct - 05 Nov	Ryanair
22 Oct - 29 Oct	Ryanair
05 Oct - 11 Oct	Ryanair
16 Oct - 30 Oct	Ryanair
22 Oct - 30 Oct	Ryanair

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 454€

Return flights