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

Return flights

20 Aug - 27 Sep	Fly Jinnah
20 Aug - 14 Sep	Fly Jinnah
20 Aug - 06 Sep	Fly Jinnah
18 Aug - 01 Sep	SalamAir
20 Aug - 26 Aug	Fly Jinnah
20 Aug - 30 Aug	Fly Jinnah
20 Aug - 15 Sep	SalamAir
18 Aug - 14 Sep	SalamAir
19 Aug - 14 Sep	SalamAir
20 Aug - 18 Sep	Fly Jinnah
21 Aug - 11 Sep	Fly Jinnah
20 Aug - 28 Aug	Fly Jinnah
18 Aug - 15 Sep	SalamAir
18 Aug - 26 Aug	SalamAir
19 Aug - 26 Aug	SalamAir
28 Aug - 31 Aug	Fly Jinnah
21 Aug - 26 Aug	SalamAir
20 Aug - 27 Aug	Fly Jinnah
19 Aug - 29 Aug	SalamAir
18 Aug - 25 Aug	SalamAir

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 575€

Return flights