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

Return flights

23 Jan - 31 Jan	Air China
09 Jan - 20 Jan	Air China
21 Jan - 31 Jan	Air China
14 Jan - 24 Jan	Air China
16 Jan - 24 Jan	Air China
07 Jan - 20 Jan	Air China
09 Jan - 23 Jan	Air China
23 Jan - 06 Feb	Air China
16 Jan - 23 Jan	Air China
14 Jan - 18 Jan	Ryanair
18 Jan - 30 Jan	Air China
18 Jan - 01 Feb	Air China
30 Jan - 08 Feb	Air China
23 Jan - 01 Feb	Air China
25 Jan - 01 Feb	Air China
14 Jan - 01 Feb	Air China
12 Jan - 01 Feb	China Southern
31 Jan - 08 Feb	China Eastern
21 Jan - 04 Feb	Air China
30 Jan - 14 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 426€

Return flights