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

Return flights

29 Oct - 05 Nov	Oman Air
26 Oct - 09 Nov	AJet
26 Oct - 16 Nov	Etihad Airways
25 Oct - 03 Nov	Pegasus Airlines
27 Oct - 14 Nov	Gulf Air
27 Oct - 16 Nov	Gulf Air
25 Oct - 05 Nov	AJet
28 Oct - 19 Nov	Flynas
27 Oct - 15 Nov	Gulf Air
29 Oct - 12 Nov	Etihad Airways
22 Oct - 29 Oct	Gulf Air
24 Oct - 30 Oct	Gulf Air
25 Oct - 31 Oct	Gulf Air
23 Oct - 29 Oct	Gulf Air
23 Oct - 30 Oct	IndiGo
22 Oct - 31 Oct	Thai Airways
23 Oct - 29 Oct	Turkish Airlines	direct
25 Oct - 31 Oct	Turkish Airlines	direct
22 Oct - 31 Oct	Turkish Airlines	direct
22 Oct - 29 Oct	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Hanoi 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 Istanbul to Hanoi in October from $638

Return flights