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

Return flights

01 Dec - 08 Dec	China Eastern
01 Dec - 14 Dec	Lufthansa
01 Dec - 13 Dec	Lufthansa
02 Dec - 14 Dec	Lufthansa
10 Dec - 21 Dec	Lufthansa
07 Dec - 14 Dec	Lufthansa
14 Dec - 21 Dec	Lufthansa
30 Dec - 06 Jan	Lufthansa
10 Dec - 18 Dec	Lufthansa
03 Dec - 17 Dec	Lufthansa
01 Dec - 19 Dec	Lufthansa
03 Dec - 06 Jan	Lufthansa
15 Dec - 05 Jan	Lufthansa
16 Dec - 01 Jan	Lufthansa
17 Dec - 01 Jan	Lufthansa
01 Dec - 01 Jan	Lufthansa
26 Dec - 04 Jan	LOT
16 Dec - 03 Jan	Lufthansa
14 Dec - 03 Jan	Lufthansa
03 Dec - 03 Jan	Lufthansa

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 363€

Return flights