AirHint found the following cheapest one-way flights from Washington (IAD) to Riyadh (RUH) in December 2025 (see full year).
One-Way flights
| 31 Dec | Etihad Airways | ||
| 09 Dec | TAP | ||
| 06 Dec | TAP | ||
| 01 Dec | TAP | ||
| 02 Dec | TAP | ||
| 10 Dec | Royal Air Maroc | ||
| 05 Dec | TAP | ||
| 28 Dec | TAP | ||
| 29 Dec | Etihad Airways | ||
| 04 Dec | TAP |
Also check the deals for return flights from Washington to Riyadh in December.
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