AirHint found the following cheapest return flights from Adelaide (ADL) to Riyadh (RUH) in December 2025 (see full year).
Return flights
| 30 Dec - 05 Jan | China Southern | ||
| 27 Dec - 10 Jan | Qatar Airways | ||
| 21 Dec - 29 Jan | Qatar Airways | ||
| 16 Dec - 28 Jan | Emirates |
Also check the deals for one-way flights from Adelaide to Riyadh in December.
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