AirHint found the following cheapest return flights from London (LGW) to Seoul (ICN) in December 2026 (see full year).

Return flights

03 Dec - 12 Dec	Turkish Airlines
01 Dec - 15 Dec	easyJet
02 Dec - 14 Dec	Ryanair
03 Dec - 30 Dec	Turkish Airlines
18 Dec - 06 Jan	Wizz Air
26 Dec - 12 Jan	Wizz Air
20 Dec - 03 Jan	easyJet
19 Dec - 09 Jan	Wizz Air UK
26 Dec - 31 Dec	Wizz Air
26 Dec - 03 Jan	Wizz Air
19 Dec - 04 Jan	easyJet
16 Dec - 01 Jan	easyJet
27 Dec - 02 Jan	Air China
19 Dec - 31 Dec	Wizz Air UK
11 Dec - 03 Jan	easyJet
26 Dec - 01 Jan	Air China
24 Dec - 30 Dec	Air China
18 Dec - 31 Dec	Wizz Air
12 Dec - 24 Dec	Turkish Airlines
19 Dec - 23 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.

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Cheapest return flights from London to Seoul in December from $821

Return flights