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

Return flights

20 Jan - 31 Jan	Lufthansa
27 Jan - 10 Feb	Lufthansa
15 Jan - 09 Feb	Lufthansa
17 Jan - 28 Jan	Lufthansa
31 Jan - 09 Feb	Lufthansa
13 Jan - 28 Jan	Lufthansa
31 Jan - 07 Feb	Lufthansa
31 Jan - 08 Feb	Lufthansa
12 Jan - 25 Jan	Lufthansa
15 Jan - 24 Jan	Lufthansa
12 Jan - 26 Jan	Lufthansa
07 Jan - 21 Jan	Lufthansa
12 Jan - 20 Jan	Lufthansa
16 Jan - 24 Jan	Lufthansa
09 Jan - 21 Jan	Lufthansa
26 Jan - 02 Feb	Lufthansa
29 Jan - 05 Feb	Lufthansa
24 Jan - 07 Feb	Air China
13 Jan - 03 Feb	Air China
27 Jan - 03 Feb	Air China

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 $591

Return flights