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

Return flights

30 Aug - 11 Sep	AJet
25 Aug - 25 Sep	AJet
25 Aug - 24 Sep	AJet
25 Aug - 20 Sep	Wizz Air UK
25 Aug - 18 Sep	AJet
25 Aug - 13 Sep	AJet
30 Aug - 23 Sep	AJet
25 Aug - 10 Sep	AJet
30 Aug - 10 Sep	AJet
25 Aug - 26 Sep	AJet
13 Aug - 17 Aug	Wizz Air
18 Aug - 21 Aug	Wizz Air UK
10 Aug - 14 Aug	Wizz Air UK
10 Aug - 17 Aug	AJet
16 Aug - 21 Aug	Fly One
08 Aug - 14 Aug	AZAL
08 Aug - 17 Aug	AZAL
06 Aug - 17 Aug	AZAL
01 Aug - 10 Aug	AZAL
06 Aug - 10 Aug	AZAL

Also check the deals for one-way flights from London to Islamabad 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 London to Islamabad in August from $580

Return flights