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

Return flights

11 Dec - 18 Dec	AZAL
18 Dec - 25 Dec	AZAL
24 Dec - 15 Jan	Fly Jinnah
01 Dec - 25 Dec	PIA
10 Dec - 18 Dec	Etihad Airways
05 Dec - 12 Dec	PIA
20 Dec - 02 Jan	Fly Jinnah
20 Dec - 03 Jan	Fly Jinnah
23 Dec - 03 Jan	Fly Jinnah
24 Dec - 07 Jan	Kuwait Airways
05 Dec - 10 Dec	Flynas
27 Dec - 02 Jan	flydubai
25 Dec - 07 Jan	Kuwait Airways
24 Dec - 15 Jan	Turkish Airlines	direct
05 Dec - 10 Dec	Turkish Airlines	direct
24 Dec - 07 Jan	Turkish Airlines	direct
25 Dec - 07 Jan	Turkish Airlines	direct
01 Dec - 25 Dec	Turkish Airlines	direct
18 Dec - 25 Dec	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 351€

Return flights