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

Return flights

27 Jan - 01 Feb	Air China
29 Jan - 08 Feb	Air China
15 Jan - 04 Feb	Air China
15 Jan - 16 Jan	Air China
16 Jan - 21 Jan	Asiana Airlines
31 Jan - 06 Feb	Air China
24 Jan - 01 Feb	Air China
27 Jan - 06 Feb	Air China
31 Jan - 08 Feb	Air China
17 Jan - 18 Jan	Air China
13 Jan - 23 Jan	Air China
18 Jan - 26 Jan	Shanghai Airlines
14 Jan - 03 Feb	China Eastern
13 Jan - 31 Jan	Peach
13 Jan - 06 Feb	China Eastern
04 Jan - 25 Jan	China Eastern
08 Jan - 23 Jan	Air China
06 Jan - 14 Jan	Air China
06 Jan - 16 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 535€

Return flights