AirHint found the following cheapest return flights from Islamabad (ISB) to London (STN) in August 2025 (see full year).

Return flights

04 Aug - 30 Sep	PIA
02 Aug - 30 Aug	Fly Jinnah
01 Aug - 17 Aug	Fly Jinnah
05 Aug - 25 Aug	PIA
01 Aug - 20 Aug	Fly Jinnah
20 Aug - 25 Aug	Fly Jinnah
09 Aug - 14 Aug	PIA
05 Aug - 26 Sep	Emirates
05 Aug - 02 Sep	Emirates
05 Aug - 10 Sep	Emirates
05 Aug - 05 Sep	Emirates
05 Aug - 15 Sep	Emirates
05 Aug - 18 Sep	Emirates
05 Aug - 23 Sep	Emirates
05 Aug - 17 Sep	Emirates
05 Aug - 16 Sep	Emirates
03 Aug - 21 Aug	Emirates
02 Aug - 19 Aug	Emirates
20 Aug - 23 Aug	Flynas
08 Aug - 24 Aug	Emirates

Also check the deals for one-way flights from Islamabad to London in August.

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 London in August from $662

Return flights