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

Return flights

18 Dec - 07 Jan	AZAL
04 Dec - 11 Dec	AZAL
19 Dec - 31 Dec	Fly Jinnah
29 Dec - 08 Jan	Fly Jinnah
20 Dec - 30 Dec	Fly Jinnah
04 Dec - 18 Dec	Flynas
11 Dec - 18 Dec	Flynas
01 Dec - 05 Dec	Etihad Airways
26 Dec - 31 Dec	flydubai
20 Dec - 28 Dec	flydubai
01 Dec - 07 Dec	flydubai
18 Dec - 25 Dec	flydubai
18 Dec - 04 Jan	flydubai
20 Dec - 03 Jan	flydubai
22 Dec - 03 Jan	flydubai
23 Dec - 03 Jan	flydubai
20 Dec - 03 Jan	Turkish Airlines	direct
18 Dec - 07 Jan	Turkish Airlines	direct
22 Dec - 03 Jan	Turkish Airlines	direct
18 Dec - 04 Jan	Turkish Airlines	direct

Also check the deals for one-way flights from Islamabad 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 Islamabad to Istanbul in December from $418

Return flights