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

Return flights

09 Jan - 26 Jan	Lufthansa
05 Jan - 14 Jan	Lufthansa
12 Jan - 26 Jan	Lufthansa
14 Jan - 27 Jan	KLM
12 Jan - 19 Jan	Lufthansa
07 Jan - 14 Jan	Lufthansa
05 Jan - 19 Jan	Lufthansa
19 Jan - 27 Jan	KLM
19 Jan - 30 Jan	KLM
09 Jan - 18 Jan	Lufthansa
14 Jan - 01 Feb	KLM
30 Jan - 10 Feb	Lufthansa
08 Jan - 05 Feb	KLM
30 Jan - 08 Feb	Lufthansa
12 Jan - 28 Feb	KLM
18 Jan - 08 Feb	KLM
23 Jan - 06 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 656€

Return flights