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

Return flights

15 Oct - 09 Nov	Pegasus Airlines
21 Oct - 04 Nov	Ryanair
30 Oct - 14 Nov	Ryanair
19 Oct - 04 Nov	Ryanair
31 Oct - 09 Nov	AJet
15 Oct - 31 Oct	Pegasus Airlines
05 Oct - 19 Oct	Pegasus Airlines
15 Oct - 25 Oct	Pegasus Airlines
20 Oct - 02 Nov	Ryanair
28 Oct - 04 Nov	AJet
14 Oct - 31 Oct	Ryanair
13 Oct - 19 Oct	Pegasus Airlines
21 Oct - 31 Oct	Ryanair
20 Oct - 31 Oct	Ryanair
07 Oct - 21 Oct	Ryanair
16 Oct - 04 Nov	Ryanair
14 Oct - 21 Oct	Ryanair
12 Oct - 19 Oct	Ryanair
31 Oct - 07 Nov	AJet
16 Oct - 07 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 592€

Return flights