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

Return flights

04 Dec - 31 Dec	Kuwait Airways
04 Dec - 27 Dec	Kuwait Airways
05 Dec - 22 Dec	Gulf Air
08 Dec - 15 Dec	Gulf Air
04 Dec - 22 Dec	Gulf Air
26 Dec - 09 Jan	Gulf Air
19 Dec - 31 Dec	Flynas
10 Dec - 25 Jan	Flynas
25 Dec - 30 Jan	Flynas
18 Dec - 31 Dec	Flynas	direct
04 Dec - 31 Dec	Flynas	direct
19 Dec - 31 Dec	Flynas	direct
04 Dec - 28 Dec	Flynas	direct
08 Dec - 06 Jan	Flynas	direct
19 Dec - 06 Jan	Gulf Air
19 Dec - 06 Jan	Flynas	direct
25 Dec - 10 Jan	Gulf Air
25 Dec - 10 Jan	Flynas	direct
28 Dec - 03 Jan	Flynas	direct
17 Dec - 05 Jan	Flynas	direct

Also check the deals for one-way flights from Riyadh 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 Riyadh to Islamabad in December from $353

Return flights