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

Return flights

15 Jan - 29 Jan	Air China
21 Jan - 24 Jan	Air China
13 Jan - 24 Jan	Air China
13 Jan - 20 Jan	Air China
16 Jan - 22 Jan	Air China
19 Jan - 27 Jan	Air China
20 Jan - 30 Jan	Air China
24 Jan - 31 Jan	Air China
14 Jan - 21 Jan	Air China
20 Jan - 01 Feb	Air China
22 Jan - 18 Feb	Air China
25 Jan - 03 Feb	Air China
18 Jan - 01 Feb	Air China
26 Jan - 01 Feb	Air China
23 Jan - 30 Jan	Air China
12 Jan - 02 Feb	Air China
30 Jan - 06 Feb	Air China
29 Jan - 01 Feb	Air China
05 Jan - 02 Feb	Air China
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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Seoul to London in January from 623€

Return flights