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

Return flights

01 Oct - 14 Oct	Wizz Air UK
01 Oct - 09 Oct	Wizz Air UK
25 Oct - 06 Nov	Ryanair
29 Oct - 12 Nov	Wizz Air Malta
31 Oct - 14 Nov	Wizz Air UK
01 Oct - 24 Oct	Ryanair
25 Oct - 07 Nov	Ryanair
22 Oct - 14 Nov	Wizz Air UK
25 Oct - 10 Nov	Ryanair
22 Oct - 22 Nov	Wizz Air UK
04 Oct - 18 Oct	easyJet
15 Oct - 20 Nov	Ryanair
13 Oct - 13 Nov	Ryanair
02 Oct - 09 Oct	Wizz Air
01 Oct - 11 Oct	Wizz Air
16 Oct - 24 Oct	Wizz Air UK
28 Oct - 07 Nov	easyJet
01 Oct - 08 Oct	Wizz Air UK
15 Oct - 23 Oct	Fly One
01 Oct - 13 Oct	easyJet

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 570€

Return flights