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

Return flights

30 Sep - 31 Oct	SalamAir
27 Sep - 27 Oct	Gulf Air
23 Sep - 14 Oct	Gulf Air
25 Sep - 02 Oct	Gulf Air
26 Sep - 03 Oct	Gulf Air
30 Sep - 15 Oct	SalamAir
26 Sep - 06 Oct	Gulf Air
26 Sep - 07 Oct	Gulf Air
26 Sep - 31 Oct	flyadeal
28 Sep - 10 Oct	flyadeal
22 Sep - 29 Sep	Gulf Air
25 Sep - 29 Sep	Gulf Air
26 Sep - 28 Sep	flyadeal	direct
23 Sep - 28 Sep	Flynas	direct
24 Sep - 28 Sep	Saudia
22 Sep - 26 Sep	Serene Air	direct
25 Sep - 29 Sep	Fly Jinnah	direct
22 Sep - 27 Sep	Serene Air	direct
25 Sep - 28 Sep	Fly Jinnah	direct
25 Sep - 27 Sep	Fly Jinnah	direct

Also check the deals for one-way flights from Riyadh to Islamabad in September.

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 September from 119€

Return flights