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

Return flights

03 Dec - 13 Dec	Ryanair
28 Dec - 25 Jan	Wizz Air
29 Dec - 08 Jan	Ryanair
10 Dec - 20 Dec	Wizz Air
29 Dec - 09 Jan	Ryanair
15 Dec - 18 Jan	Ryanair
15 Dec - 14 Jan	Ryanair
28 Dec - 08 Jan	Wizz Air
28 Dec - 09 Jan	Wizz Air
03 Dec - 05 Jan	Ryanair
02 Dec - 15 Dec	Wizz Air
10 Dec - 02 Jan	Wizz Air Malta
31 Dec - 05 Jan	Ryanair
08 Dec - 18 Dec	Ryanair
06 Dec - 13 Dec	Ryanair
17 Dec - 29 Dec	Wizz Air
15 Dec - 29 Dec	Ryanair
24 Dec - 31 Dec	Wizz Air
24 Dec - 26 Dec	Wizz Air
04 Dec - 13 Dec	easyJet

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 619€

Return flights