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

Return flights

14 Jan - 21 Jan	Air China
12 Jan - 21 Jan	Air China
10 Jan - 19 Jan	Air China
09 Jan - 19 Jan	Air China
17 Jan - 25 Jan	Air China
17 Jan - 31 Jan	Air China
24 Jan - 28 Jan	Air China
14 Jan - 30 Jan	Air China
10 Jan - 20 Jan	Air China
10 Jan - 18 Jan	China Southern
24 Jan - 01 Feb	Air China
25 Jan - 01 Feb	Japan Airlines
25 Jan - 04 Feb	Japan Airlines
25 Jan - 02 Feb	Japan Airlines
31 Jan - 14 Feb	Air China
29 Jan - 04 Feb	Japan Airlines
29 Jan - 19 Feb	Japan Airlines
11 Jan - 11 Feb	ANA

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 $539

Return flights