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

Return flights

08 Jan - 01 Feb	KLM
16 Jan - 05 Feb	KLM
15 Jan - 03 Feb	KLM
15 Jan - 01 Feb	KLM
14 Jan - 20 Jan	KLM
16 Jan - 20 Jan	KLM
16 Jan - 01 Feb	KLM
09 Jan - 20 Jan	KLM
15 Jan - 31 Jan	KLM
15 Jan - 08 Feb	KLM
19 Jan - 08 Feb	KLM
16 Jan - 08 Feb	KLM
14 Jan - 01 Feb	KLM
21 Jan - 30 Jan	KLM
28 Jan - 03 Feb	KLM
22 Jan - 30 Jan	KLM
14 Jan - 30 Jan	KLM
12 Jan - 30 Jan	KLM
13 Jan - 20 Jan	KLM
16 Jan - 31 Jan	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 $581

Return flights