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

Return flights

19 Oct - 23 Oct	VietJet Air
01 Oct - 29 Oct	VietJet Air
03 Oct - 11 Oct	Jin Air	direct
03 Oct - 12 Oct	Jin Air	direct
03 Oct - 13 Oct	Jin Air	direct
03 Oct - 18 Oct	Jin Air	direct
02 Oct - 09 Oct	VietJet Air
01 Oct - 07 Oct	VietJet Air
03 Oct - 14 Oct	Jin Air	direct
03 Oct - 08 Oct	VietJet Air
29 Oct - 02 Nov	Vietnam Airlines
15 Oct - 12 Nov	Vietnam Airlines
25 Oct - 01 Nov	Vietnam Airlines
29 Oct - 05 Nov	Vietnam Airlines
30 Oct - 02 Nov	Vietnam Airlines
05 Oct - 05 Nov	VietJet Air
08 Oct - 05 Nov	VietJet Air

Also check the deals for one-way flights from Bangkok 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 Bangkok to Busan in October from $208

Return flights