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

Return flights

15 Sep - 30 Sep	jetBlue
18 Sep - 02 Oct	jetBlue
17 Sep - 27 Sep	jetBlue
09 Sep - 30 Sep	jetBlue
11 Sep - 25 Sep	jetBlue
23 Sep - 01 Oct	Air Canada
26 Sep - 07 Oct	Delta
01 Sep - 09 Sep	Kenya Airways
24 Sep - 09 Oct	Kenya Airways
10 Sep - 22 Sep	Qatar Airways
18 Sep - 30 Sep	Qatar Airways
17 Sep - 01 Oct	Qatar Airways
09 Sep - 24 Sep	Qatar Airways
11 Sep - 28 Sep	Qatar Airways
11 Sep - 27 Sep	Qatar Airways
15 Sep - 01 Oct	British Airways

Also check the deals for one-way flights from Washington to Nairobi 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 Nairobi in September from $816

Return flights