AirHint found the following cheapest return flights from Washington (IAD) to Islamabad (ISB) in March 2026 (see full year).

Return flights

29 Mar - 26 Apr	Turkish Airlines
23 Mar - 23 Apr	Turkish Airlines
10 Mar - 29 Mar	Turkish Airlines
02 Mar - 16 Apr	Etihad Airways
20 Mar - 17 Apr	Etihad Airways
28 Mar - 17 Apr	Etihad Airways
28 Mar - 18 Apr	Etihad Airways
17 Mar - 21 Apr	Etihad Airways
02 Mar - 02 Apr	Turkish Airlines
21 Mar - 07 Apr	Turkish Airlines
23 Mar - 07 Apr	Turkish Airlines
14 Mar - 31 Mar	Etihad Airways
13 Mar - 31 Mar	Etihad Airways
13 Mar - 27 Mar	Etihad Airways

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

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 March from $642

Return flights