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

Return flights

19 Jan - 02 Feb	Air China
26 Jan - 02 Feb	Air China
15 Jan - 25 Jan	Air China
19 Jan - 03 Feb	Air China
15 Jan - 22 Jan	Air China
24 Jan - 01 Feb	Cathay Pacific
25 Jan - 29 Jan	Cathay Pacific
29 Jan - 06 Feb	Air China
21 Jan - 23 Jan	Cathay Pacific
20 Jan - 27 Jan	Cathay Pacific
25 Jan - 30 Jan	Cathay Pacific
25 Jan - 27 Jan	Cathay Pacific
28 Jan - 11 Feb	Korean Air
19 Jan - 30 Jan	Korean Air
13 Jan - 20 Jan	Singapore Airlines
18 Jan - 25 Jan	Cathay Pacific
30 Jan - 06 Feb	Air China
20 Jan - 10 Feb	Air China

Also check the deals for one-way flights from Busan 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 Busan to London in January from $723

Return flights