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

Return flights

15 Dec - 09 Jan	Ryanair
14 Dec - 09 Jan	Ryanair
13 Dec - 10 Jan	Ryanair
01 Dec - 08 Dec	Wizz Air
01 Dec - 14 Dec	Wizz Air
12 Dec - 15 Dec	Ryanair
01 Dec - 11 Dec	Wizz Air
15 Dec - 21 Dec	Wizz Air
26 Dec - 02 Jan	Ryanair
26 Dec - 31 Dec	Ryanair
12 Dec - 03 Jan	Ryanair
15 Dec - 03 Jan	Wizz Air
29 Dec - 07 Jan	Wizz Air
26 Dec - 11 Jan	Ryanair
11 Dec - 26 Dec	Wizz Air UK
19 Dec - 31 Dec	Ryanair
29 Dec - 05 Jan	Wizz Air
24 Dec - 31 Dec	Wizz Air UK
23 Dec - 27 Jan	Wizz Air UK
22 Dec - 28 Dec	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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from London to Seoul in December from $859

Return flights