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

Return flights

04 Oct - 12 Oct	VietJet Air	direct
01 Oct - 15 Oct	VietJet Air
02 Oct - 11 Oct	VietJet Air
02 Oct - 12 Oct	VietJet Air
03 Oct - 10 Oct	VietJet Air
19 Oct - 24 Oct	VietJet Air
17 Oct - 20 Oct	VietJet Air
17 Oct - 21 Oct	VietJet Air
31 Oct - 04 Nov	VietJet Air
16 Oct - 29 Oct	VietJet Air
05 Oct - 12 Oct	VietJet Air
27 Oct - 02 Nov	VietJet Air

Also check the deals for one-way flights from Hanoi 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 Hanoi to Busan in October from 141€

Return flights