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

Return flights

28 Jan - 04 Feb	Air China
05 Jan - 16 Jan	Air China
05 Jan - 29 Jan	Air China
20 Jan - 25 Jan	Air China
10 Jan - 24 Jan	Air China
22 Jan - 28 Jan	Air China
21 Jan - 15 Feb	Air China
23 Jan - 05 Feb	Air China
19 Jan - 07 Feb	Air China
21 Jan - 28 Jan	Air China
12 Jan - 25 Jan	Air China
08 Jan - 24 Jan	Air China
24 Jan - 02 Feb	Air China
24 Jan - 05 Feb	Air China
20 Jan - 29 Jan	Air China
20 Jan - 28 Jan	Air China
29 Jan - 09 Feb	Air China
31 Jan - 07 Feb	Air China
24 Jan - 01 Feb	Air China
23 Jan - 01 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 $842

Return flights