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

Return flights

29 Sep - 05 Oct	Ethiopian Airlines
14 Sep - 25 Sep	Ethiopian Airlines
16 Sep - 30 Sep	Ethiopian Airlines
14 Sep - 21 Sep	Delta
15 Sep - 19 Sep	Air France
17 Sep - 21 Sep	Air France
15 Sep - 21 Sep	Air France
10 Sep - 17 Sep	Air France
15 Sep - 20 Sep	Air Canada
22 Sep - 07 Oct	Brussels Airlines
14 Sep - 22 Sep	Ethiopian Airlines
16 Sep - 20 Sep	Lufthansa
17 Sep - 02 Oct	Brussels Airlines
29 Sep - 04 Oct	Ethiopian Airlines
28 Sep - 04 Oct	Ethiopian Airlines

Also check the deals for one-way flights from Newark 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 Newark to Nairobi in September from $844

Return flights