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

Return flights

02 Dec - 09 Dec	Wizz Air
02 Dec - 12 Dec	Wizz Air
09 Dec - 16 Dec	Wizz Air
09 Dec - 18 Dec	Wizz Air
01 Dec - 09 Dec	Ryanair
09 Dec - 09 Jan	Wizz Air
29 Dec - 18 Jan	Ryanair
06 Dec - 17 Dec	Wizz Air
12 Dec - 16 Dec	Wizz Air
10 Dec - 09 Jan	Wizz Air
06 Dec - 13 Dec	Wizz Air
30 Dec - 09 Jan	Wizz Air
02 Dec - 10 Dec	Wizz Air
15 Dec - 24 Dec	Ryanair
29 Dec - 11 Jan	Ryanair
11 Dec - 09 Jan	Wizz Air
09 Dec - 10 Jan	Wizz Air
10 Dec - 11 Jan	Wizz Air
10 Dec - 10 Jan	Wizz Air
15 Dec - 15 Jan	Ryanair

Also check the deals for one-way flights from London to Seoul in December.

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 December from 563€

Return flights