AirHint found the following cheapest return flights from Washington (IAD) to Cape Town (CPT) in December 2025 (see full year).

Return flights

11 Dec - 21 Dec	Ethiopian Airlines
08 Dec - 16 Dec	Ethiopian Airlines
08 Dec - 15 Dec	Ethiopian Airlines
10 Dec - 17 Dec	Delta
12 Dec - 14 Dec	Ethiopian Airlines
07 Dec - 08 Dec	Qatar Airways
08 Dec - 09 Dec	Ethiopian Airlines
11 Dec - 21 Dec	United	direct
08 Dec - 16 Dec	United	direct
11 Dec - 12 Dec	Ethiopian Airlines
30 Dec - 02 Jan	Ethiopian Airlines
29 Dec - 02 Jan	Ethiopian Airlines
11 Dec - 04 Jan	Ethiopian Airlines
23 Dec - 01 Jan	Frontier Airlines
30 Dec - 03 Jan	Saudia
20 Dec - 24 Jan	Delta
25 Dec - 03 Jan	Frontier Airlines

Also check the deals for one-way flights from Washington to Cape Town 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 Washington to Cape Town in December from 1197€

Return flights