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

Return flights

05 Dec - 15 Jan	AZAL
15 Dec - 22 Dec	Gulf Air
25 Dec - 09 Jan	Gulf Air
12 Dec - 29 Dec	Gulf Air
20 Dec - 02 Jan	Kuwait Airways
20 Dec - 03 Jan	Flynas
22 Dec - 03 Jan	Gulf Air
20 Dec - 08 Jan	Flynas
17 Dec - 26 Dec	Air Arabia
21 Dec - 05 Jan	Air Arabia
20 Dec - 10 Jan	Turkish Airlines	direct
05 Dec - 15 Jan	Turkish Airlines	direct
20 Dec - 08 Jan	Turkish Airlines	direct
15 Dec - 22 Dec	Turkish Airlines	direct
12 Dec - 29 Dec	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Islamabad 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 Istanbul to Islamabad in December from $460

Return flights