AirHint found the following cheapest return flights from Riyadh (RUH) to Lisbon (LIS) in May 2026 (see full year).
Return flights
| 04 May - 13 May | Pegasus Airlines | ||
| 22 May - 01 Jun | SWISS | ||
| 22 May - 31 May | SWISS |
Also check the deals for one-way flights from Riyadh to Lisbon in May.
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