AirHint found the following cheapest return flights from Busan (PUS) to London (LHR) in December 2025 (see full year).

Return flights

11 Dec - 25 Dec	Air China
26 Dec - 31 Dec	China Airlines
26 Dec - 02 Jan	China Airlines
29 Dec - 02 Jan	Korean Air
22 Dec - 29 Dec	Korean Air
22 Dec - 06 Jan	Korean Air
27 Dec - 30 Dec	Korean Air
22 Dec - 27 Dec	Korean Air
22 Dec - 03 Jan	Korean Air
16 Dec - 23 Dec	Korean Air

Also check the deals for one-way flights from Busan to London in December.

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 December from 674€

Return flights