Is there any regular schedules of Sapco Bus from Dammam to Riyadh?

Yes, SAPTCO operates regular bus services between Dammam and Riyadh. Here is a summary of the scheduled bus departures from Dammam to Riyadh:

Direct Service:

* Departure: 06:30 AM, 10:00 AM, 02:00 PM, 06:00 PM, and 10:30 PM.

Departure: Dammam Central Bus Terminal (East Station - King Fahd Road).

Arrival Terminal: Riyadh Central Bus Terminal (Eastern Ring Road).

Note: These schedules are subject to change, and it's always best to verify the most up-to-date information directly with SAPTCO or through their website.