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

Return flights

17 Jan - 24 Jan	China Eastern
13 Jan - 20 Jan	China Eastern
17 Jan - 27 Jan	China Eastern
17 Jan - 28 Jan	China Eastern
23 Jan - 30 Jan	China Eastern
13 Jan - 21 Jan	China Eastern
23 Jan - 02 Feb	China Eastern
11 Jan - 21 Jan	China Eastern
11 Jan - 18 Jan	China Eastern
14 Jan - 11 Feb	Lufthansa
14 Jan - 09 Feb	Lufthansa
15 Jan - 31 Jan	Lufthansa
11 Jan - 25 Jan	Lufthansa
09 Jan - 01 Feb	Lufthansa
27 Jan - 08 Feb	Lufthansa
27 Jan - 09 Feb	Lufthansa
27 Jan - 04 Feb	Lufthansa
17 Jan - 05 Feb	Lufthansa
27 Jan - 10 Feb	Lufthansa
19 Jan - 07 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 $456

Return flights