Yes, Armenian citizens need to get a visa before traveling to UAE.
Armenians with a diplomatic passport can travel without a visa.
UAE offers short-term and long-term visa options each with multiple or single entry. Travel visa options have a 30 or 90 days validity.
Single entry short term 30-day tourist visa to Dubai will costs approximately $90 for Armenian citizens. The same visa with multiple entry will be $175. Long term tourist visas for 90 days cost $190 for single entry and $460 for multiple entry.
Air companies, 3-5 star hotels or tour operators can apply for visa on behalf of the person who booked their services. Friends and relatives in UAE as well as different organizations can also apply for visa.