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

Return flights

17 Dec - 24 Dec	Fly Jinnah
14 Dec - 19 Dec	Flynas	direct
01 Dec - 25 Dec	Flynas	direct
17 Dec - 24 Dec	Flynas	direct
15 Dec - 22 Dec	Etihad Airways
18 Dec - 31 Dec	Flynas	direct
11 Dec - 07 Jan	Flynas	direct
11 Dec - 08 Jan	Flynas	direct
20 Dec - 10 Jan	Kuwait Airways
20 Dec - 28 Dec	Fly Jinnah
29 Dec - 29 Dec	Saudia
20 Dec - 10 Jan	PIA	direct
16 Dec - 21 Jan	Saudia
16 Dec - 20 Jan	PIA
23 Dec - 10 Jan	PIA

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 $299

Return flights