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

Return flights

04 Oct - 09 Oct	Korean Air
04 Oct - 09 Oct	Korean Air	direct
03 Oct - 09 Oct	Korean Air
03 Oct - 08 Oct	Korean Air
01 Oct - 10 Oct	Korean Air
03 Oct - 07 Oct	Korean Air
01 Oct - 06 Oct	Korean Air
01 Oct - 07 Oct	Korean Air
01 Oct - 10 Oct	Air China	direct

Also check the deals for one-way flights from Beijing to Busan 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 Beijing to Busan in October from $266

Return flights