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

Return flights

06 Dec - 11 Dec	Delta
29 Dec - 11 Jan	Delta
09 Dec - 13 Jan	Delta
29 Dec - 12 Jan	Virgin Atlantic
01 Dec - 08 Dec	Air France
03 Dec - 10 Dec	Air France
02 Dec - 09 Dec	Delta
03 Dec - 29 Dec	Air France
28 Dec - 11 Jan	Delta
11 Dec - 18 Jan	Delta
28 Dec - 13 Jan	Delta
13 Dec - 12 Jan	Air France
13 Dec - 11 Jan	Air France
14 Dec - 12 Jan	Virgin Atlantic
12 Dec - 31 Jan	Aer Lingus
06 Dec - 31 Dec	Delta
05 Dec - 31 Dec	Delta
01 Dec - 08 Dec	Saudia	direct
24 Dec - 25 Dec	Etihad Airways
19 Dec - 29 Dec	Aer Lingus

Also check the deals for one-way flights from Washington to Riyadh 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 Riyadh in December from $847

Return flights