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

Return flights

30 Dec - 14 Jan	Flynas	direct
11 Dec - 21 Jan	Flynas	direct
12 Dec - 30 Jan	Flynas	direct
10 Dec - 17 Dec	Fly Jinnah
25 Dec - 28 Dec	Fly Jinnah	direct
11 Dec - 18 Dec	Flynas	direct
25 Dec - 01 Jan	Fly Jinnah	direct
10 Dec - 31 Dec	Flynas	direct
19 Dec - 24 Jan	Fly Jinnah
31 Dec - 10 Jan	Fly Jinnah	direct
25 Dec - 15 Jan	Fly Jinnah	direct
31 Dec - 31 Jan	Fly Jinnah	direct
10 Dec - 17 Dec	Flynas	direct
04 Dec - 17 Dec	Fly Jinnah
22 Dec - 29 Dec	AZAL
04 Dec - 16 Dec	Fly Jinnah
19 Dec - 11 Jan	Flynas	direct
04 Dec - 12 Dec	Fly Jinnah
19 Dec - 20 Dec	Fly Jinnah
18 Dec - 01 Jan	Flynas	direct

Also check the deals for one-way flights from Islamabad to Riyadh 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 Riyadh in December from $394

Return flights