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

Return flights

18 Jan - 25 Jan	Air China
21 Jan - 26 Jan	Air China
14 Jan - 28 Jan	Air China
28 Jan - 28 Feb	LOT
14 Jan - 23 Jan	Air China
20 Jan - 30 Jan	Air China
17 Jan - 24 Jan	Air China
17 Jan - 31 Jan	Air China
18 Jan - 27 Jan	Air China
26 Jan - 30 Jan	Air China
13 Jan - 29 Jan	Air China
11 Jan - 01 Feb	Lufthansa
17 Jan - 08 Feb	Lufthansa
24 Jan - 02 Feb	Lufthansa
10 Jan - 01 Feb	Lufthansa
23 Jan - 01 Feb	Lufthansa
25 Jan - 04 Feb	Lufthansa
22 Jan - 02 Feb	Lufthansa
31 Jan - 11 Feb	Lufthansa
27 Jan - 09 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 $477

Return flights