AirHint found the following cheapest one-way flights from Riyadh (RUH) to Lisbon (LIS) in December 2025 (see full year).
One-Way flights
| 16 Dec | Flynas | ||
| 15 Dec | Royal Jordanian | ||
| 12 Dec | flyadeal | ||
| 13 Dec | flyadeal | ||
| 14 Dec | AJet | ||
| 21 Dec | AJet | ||
| 17 Dec | Pegasus Airlines | ||
| 09 Dec | flyadeal | ||
| 10 Dec | flyadeal | ||
| 07 Dec | AJet |
Also check the deals for return flights from Riyadh to Lisbon in December.
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