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

Return flights

22 Oct - 27 Oct	Air China
17 Oct - 27 Oct	Air China
19 Oct - 25 Oct	Air China
24 Oct - 01 Nov	Air China
13 Oct - 17 Oct	Air China
31 Oct - 08 Nov	Air China
10 Oct - 13 Oct	China Airlines
07 Oct - 17 Oct	China Airlines
05 Oct - 14 Oct	Singapore Airlines
03 Oct - 15 Oct	Cathay Pacific
04 Oct - 11 Oct	Jeju Air
03 Oct - 14 Oct	Cathay Pacific

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

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 October from 605€

Return flights