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

Return flights

28 Jan - 04 Feb	China Southern
27 Jan - 01 Feb	China Southern
24 Jan - 27 Jan	China Southern
21 Jan - 01 Feb	China Southern
25 Jan - 09 Feb	Air China
14 Jan - 26 Jan	Air China
18 Jan - 20 Jan	Air China
26 Jan - 31 Jan	Air China
16 Jan - 26 Jan	Air China
30 Jan - 18 Feb	Air China
16 Jan - 20 Jan	Air China
21 Jan - 28 Jan	Air China
14 Jan - 20 Jan	Air China
26 Jan - 03 Feb	Air China
27 Jan - 02 Feb	Air China
28 Jan - 01 Feb	Air China
26 Jan - 29 Jan	Air China
21 Jan - 04 Feb	Air China
27 Jan - 03 Feb	Air China
26 Jan - 26 Jan	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 400€

Return flights