Cheapest return flights from London to Islamabad in September from $398

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

Return flights

21 Sep - 09 Oct Pegasus Airlines
29 Sep - 09 Oct Pegasus Airlines
19 Sep - 09 Oct Pegasus Airlines
24 Sep - 09 Oct AJet
24 Sep - 16 Oct AJet
25 Sep - 16 Oct Pegasus Airlines
25 Sep - 09 Oct Pegasus Airlines
22 Sep - 02 Oct Pegasus Airlines
23 Sep - 09 Oct Pegasus Airlines
22 Sep - 19 Oct Pegasus Airlines
19 Sep - 30 Sep Pegasus Airlines
22 Sep - 29 Sep Pegasus Airlines
18 Sep - 21 Sep Pegasus Airlines
19 Sep - 28 Sep Pegasus Airlines
18 Sep - 28 Sep Pegasus Airlines
26 Sep - 28 Sep AJet
22 Sep - 28 Sep Pegasus Airlines
21 Sep - 28 Sep Pegasus Airlines
19 Sep - 25 Sep Pegasus Airlines
19 Sep - 26 Sep Pegasus Airlines

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

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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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