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

Return flights

01 Dec - 07 Dec	Qatar Airways
03 Dec - 13 Dec	Qatar Airways
10 Dec - 17 Dec	Qatar Airways
12 Dec - 14 Dec	Qatar Airways
26 Dec - 04 Jan	Emirates
03 Dec - 13 Dec	Turkish Airlines	direct
26 Dec - 04 Jan	Turkish Airlines	direct
12 Dec - 14 Dec	Turkish Airlines	direct
01 Dec - 07 Dec	Turkish Airlines	direct
10 Dec - 17 Dec	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 781€

Return flights