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

Return flights

22 Jan - 25 Jan	China Eastern
28 Jan - 10 Feb	China Eastern
20 Jan - 28 Jan	China Eastern
23 Jan - 25 Jan	China Eastern
18 Jan - 01 Feb	China Eastern
20 Jan - 24 Jan	China Eastern
28 Jan - 15 Feb	China Eastern
26 Jan - 18 Feb	China Eastern
28 Jan - 29 Jan	Air China
19 Jan - 01 Feb	Air China
24 Jan - 07 Feb	China Eastern
21 Jan - 25 Jan	Air China
19 Jan - 26 Jan	Air China
21 Jan - 05 Feb	China Eastern
26 Jan - 28 Jan	Air China
19 Jan - 24 Jan	Air China
21 Jan - 31 Jan	Air China
21 Jan - 03 Feb	Air China
29 Jan - 09 Feb	China Eastern
21 Jan - 01 Feb	Air China

Also check the deals for one-way flights from Seoul to London 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 Seoul to London in January from 417€

Return flights