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

Return flights

19 Jan - 26 Jan	China Eastern
29 Jan - 03 Feb	China Eastern
28 Jan - 04 Feb	China Eastern
30 Jan - 04 Feb	China Eastern
22 Jan - 28 Jan	Air China
31 Jan - 04 Feb	China Eastern
31 Jan - 07 Feb	Air China
27 Jan - 04 Feb	Air China
15 Jan - 22 Jan	Air China
19 Jan - 27 Jan	Air Busan
29 Jan - 06 Feb	Air China
11 Jan - 17 Jan	Air China
11 Jan - 18 Jan	Air China
08 Jan - 11 Jan	Air China
19 Jan - 28 Jan	Air Busan
15 Jan - 28 Jan	Air China
06 Jan - 14 Jan	Air China
31 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 $472

Return flights