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

Return flights

24 Sep - 07 Oct	Ethiopian Airlines
29 Sep - 12 Oct	Ethiopian Airlines
17 Sep - 21 Sep	Air France
25 Sep - 01 Oct	Air France
15 Sep - 23 Sep	Brussels Airlines
23 Sep - 08 Oct	Brussels Airlines
18 Sep - 29 Sep	Delta
16 Sep - 20 Sep	Brussels Airlines
22 Sep - 30 Sep	Brussels Airlines
17 Sep - 02 Oct	Brussels Airlines
23 Sep - 16 Oct	Brussels Airlines
09 Sep - 18 Sep	Delta
14 Sep - 21 Sep	Ethiopian Airlines
13 Sep - 20 Sep	Brussels Airlines
22 Sep - 28 Sep	Lufthansa
22 Sep - 29 Sep	KLM

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 714€

Return flights