Cheapest return flights from Washington to Islamabad in September from $1062

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

Return flights

21 Sep - 29 Sep Qatar Airways
21 Sep - 30 Sep Qatar Airways
23 Sep - 30 Sep Qatar Airways
22 Sep - 22 Oct Qatar Airways
23 Sep - 04 Oct Qatar Airways
24 Sep - 01 Oct Qatar Airways
26 Sep - 04 Oct Qatar Airways
21 Sep - 30 Oct Air Canada

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

Skyscanner

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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