AirHint found the following cheapest return flights from Seattle (SEA) to Nairobi (NBO) in December 2025 (see full year).

Return flights

10 Dec - 24 Dec	Delta
14 Dec - 21 Dec	Delta
09 Dec - 24 Dec	Delta
10 Dec - 25 Dec	Delta
10 Dec - 19 Dec	Qatar Airways
13 Dec - 21 Dec	Delta
09 Dec - 03 Jan	Lufthansa
22 Dec - 31 Dec	RwandAir
14 Dec - 03 Jan	Alaska Airlines
15 Dec - 01 Jan	Hawaiian Airlines
16 Dec - 04 Jan	Air France
15 Dec - 02 Jan	Alaska Airlines
17 Dec - 03 Jan	Hawaiian Airlines
14 Dec - 02 Jan	Alaska Airlines
21 Dec - 05 Jan	Frontier Airlines
16 Dec - 01 Jan	Alaska Airlines
16 Dec - 02 Jan	Alaska Airlines

Also check the deals for one-way flights from Seattle to Nairobi in December.

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 Seattle to Nairobi in December from 1245€

Return flights