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

Return flights

15 Dec - 29 Dec	Vietravel Airlines
15 Dec - 27 Dec	Vietravel Airlines
16 Dec - 27 Dec	AirAsia
15 Dec - 28 Dec	Vietravel Airlines
16 Dec - 28 Dec	AirAsia
26 Dec - 29 Dec	VietJet Air
27 Dec - 12 Jan	Etihad Airways
23 Dec - 20 Jan	IndiGo
17 Dec - 28 Dec	VietJet Air
15 Dec - 24 Dec	VietJet Air
20 Dec - 31 Dec	IndiGo
24 Dec - 30 Dec	IndiGo
27 Dec - 04 Jan	Emirates
23 Dec - 20 Jan	Turkish Airlines	direct

Also check the deals for one-way flights from Hanoi to Istanbul in December.

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 Istanbul in December from $544

Return flights