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

Return flights

30 Oct - 20 Nov	Gulf Air
18 Oct - 21 Nov	Qatar Airways
19 Oct - 03 Nov	Qatar Airways
22 Oct - 02 Nov	Qatar Airways
02 Oct - 16 Oct	Qatar Airways
05 Oct - 05 Nov	Qatar Airways
09 Oct - 19 Nov	Qatar Airways
17 Oct - 26 Oct	Qatar Airways
15 Oct - 24 Oct	Qatar Airways
05 Oct - 26 Oct	Qatar Airways
05 Oct - 11 Nov	Qatar Airways
01 Oct - 15 Oct	Qatar Airways
10 Oct - 18 Oct	Qatar Airways
04 Oct - 19 Oct	Qatar Airways
11 Oct - 18 Oct	Qatar Airways
30 Oct - 30 Nov	Qatar Airways
09 Oct - 08 Nov	Qatar Airways
06 Oct - 26 Oct	Emirates

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

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 Washington to Islamabad in October from $1020

Return flights