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

Return flights

24 Sep - 03 Oct	Qatar Airways
23 Sep - 03 Oct	Qatar Airways
29 Sep - 13 Oct	Qatar Airways
29 Sep - 10 Oct	Qatar Airways
30 Sep - 08 Oct	Qatar Airways
28 Sep - 11 Oct	Royal Jordanian
22 Sep - 05 Oct	Qatar Airways
27 Sep - 09 Oct	Qatar Airways
27 Sep - 10 Oct	Qatar Airways
29 Sep - 12 Oct	Qatar Airways
20 Sep - 30 Sep	Turkish Airlines
23 Sep - 30 Sep	Turkish Airlines
21 Sep - 28 Sep	Turkish Airlines
20 Sep - 27 Sep	Qatar Airways

Also check the deals for one-way flights from Washington to Kabul 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 Kabul in September from $1002

Return flights