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

Return flights

05 Dec - 14 Dec	Wizz Air Malta
01 Dec - 07 Dec	easyJet
01 Dec - 14 Dec	easyJet
08 Dec - 14 Dec	easyJet
10 Dec - 16 Dec	Wizz Air Malta
01 Dec - 05 Dec	Ryanair
02 Dec - 15 Dec	easyJet
29 Dec - 19 Jan	Wizz Air
28 Dec - 09 Jan	Wizz Air
05 Dec - 09 Dec	Wizz Air Malta
05 Dec - 12 Dec	Ryanair
09 Dec - 23 Dec	Wizz Air
30 Dec - 07 Jan	Wizz Air
05 Dec - 09 Jan	Wizz Air Malta
27 Dec - 19 Jan	Wizz Air
27 Dec - 11 Jan	Wizz Air
30 Dec - 06 Jan	Wizz Air
27 Dec - 07 Jan	Wizz Air
25 Dec - 12 Jan	Wizz Air
29 Dec - 07 Jan	Wizz Air

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 468€

Return flights