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

Return flights

31 Jan - 07 Feb	Lufthansa
09 Jan - 21 Jan	Lufthansa
16 Jan - 31 Jan	Lufthansa
01 Jan - 14 Jan	Lufthansa
15 Jan - 28 Jan	Lufthansa
13 Jan - 18 Jan	Lufthansa
16 Jan - 21 Jan	Lufthansa
22 Jan - 28 Jan	Lufthansa
24 Jan - 31 Jan	Lufthansa
11 Jan - 21 Jan	Lufthansa
16 Jan - 01 Feb	Lufthansa
16 Jan - 02 Feb	Lufthansa
20 Jan - 02 Feb	Lufthansa
06 Jan - 14 Jan	Lufthansa
13 Jan - 01 Feb	Lufthansa
20 Jan - 07 Feb	Lufthansa
31 Jan - 16 Feb	Lufthansa
24 Jan - 04 Feb	Lufthansa
31 Jan - 08 Feb	Lufthansa
31 Jan - 10 Feb	Lufthansa

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 $568

Return flights