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

Return flights

08 Jan - 29 Jan	Lufthansa
22 Jan - 01 Feb	Lufthansa
13 Jan - 20 Jan	Lufthansa
09 Jan - 21 Jan	Lufthansa
06 Jan - 20 Jan	Lufthansa
23 Jan - 01 Feb	Lufthansa
19 Jan - 01 Feb	Lufthansa
22 Jan - 29 Jan	KLM
22 Jan - 03 Feb	KLM
16 Jan - 20 Jan	Lufthansa
07 Jan - 21 Jan	Lufthansa
15 Jan - 20 Jan	Lufthansa
01 Jan - 20 Jan	Lufthansa
09 Jan - 20 Jan	Lufthansa
09 Jan - 01 Feb	Lufthansa
13 Jan - 10 Feb	Lufthansa
27 Jan - 03 Feb	KLM
21 Jan - 04 Feb	SWISS
20 Jan - 03 Feb	KLM
18 Jan - 01 Feb	KLM

Also check the deals for one-way flights from London to Seoul in January.

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 January from 573€

Return flights