AirHint found the following cheapest return flights from Washington (IAD) to Doha (DOH) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct	Etihad Airways
28 Sep - 05 Oct	Royal Jordanian
10 Sep - 19 Sep	Etihad Airways
14 Sep - 29 Sep	Etihad Airways
18 Sep - 01 Oct	Etihad Airways
25 Sep - 30 Sep	Turkish Airlines
18 Sep - 01 Oct	Qatar Airways	direct
14 Sep - 29 Sep	Qatar Airways	direct
29 Sep - 06 Oct	Qatar Airways	direct
25 Sep - 30 Sep	Qatar Airways	direct

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

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 Doha in September from 608€

Return flights