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

Return flights

22 Jan - 26 Jan	Air China
21 Jan - 28 Jan	Air China
30 Jan - 18 Feb	Air China
31 Jan - 18 Feb	Air China
27 Jan - 04 Feb	Air China
19 Jan - 26 Jan	Air China
19 Jan - 03 Feb	Air China
29 Jan - 03 Feb	Air China
28 Jan - 05 Feb	China Southern
22 Jan - 25 Jan	Air China
19 Jan - 23 Jan	Air China
21 Jan - 23 Jan	Air China
19 Jan - 25 Jan	Air China
19 Jan - 24 Jan	Air China
25 Jan - 03 Feb	Air China
12 Jan - 19 Jan	Air China
25 Jan - 09 Feb	Air China
28 Jan - 31 Jan	Air China
25 Jan - 01 Feb	Air China
22 Jan - 05 Feb	China Eastern

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 462€

Return flights