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

Return flights

07 Oct - 14 Oct	Ryanair
03 Oct - 16 Oct	Pegasus Airlines
06 Oct - 20 Oct	Ryanair
14 Oct - 21 Oct	Ryanair
20 Oct - 27 Nov	Ryanair
22 Oct - 29 Oct	Ryanair
21 Oct - 30 Oct	Ryanair
16 Oct - 29 Oct	Pegasus Airlines
01 Oct - 16 Oct	Pegasus Airlines
19 Oct - 04 Nov	Ryanair
03 Oct - 11 Oct	Pegasus Airlines
19 Oct - 01 Nov	Ryanair
22 Oct - 01 Nov	Ryanair
21 Oct - 01 Nov	Ryanair
16 Oct - 30 Oct	Ryanair
30 Oct - 14 Nov	Turkish Airlines
31 Oct - 13 Nov	Turkish Airlines
30 Oct - 13 Nov	Turkish Airlines
26 Oct - 19 Nov	Ryanair
01 Oct - 02 Nov	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 649€

Return flights